GIF89a;
Direktori : /usr/share/mysql-test/suite/innodb_zip/t/ |
Current File : //usr/share/mysql-test/suite/innodb_zip/t/innodb_prefix_index_liftedlimit.test |
######## suite/innodb/t/innodb_prefix_index_liftedlimit.test ########## # # # Testcase for worklog WL#5743: Lift the limit of index key prefixes # # Accorrding to WL#5743 - prefix index limit is increased from 767 # # to 3072 for innodb. This change is applicable with Barracuda file # # format. # # All sub-test in this file focus on prefix index along with other # # operations # # # # # # Creation: # # 2011-05-19 Implemented this test as part of WL#5743 # # # ###################################################################### --source include/have_innodb.inc --source include/have_innodb_16k.inc # Save innodb variables --disable_query_log let $innodb_file_format_orig = `select @@innodb_file_format`; let $innodb_file_per_table_orig = `select @@innodb_file_per_table`; let $innodb_large_prefix_orig = `select @@innodb_large_prefix`; --enable_query_log # Set Innodb file format as feature works for Barracuda file format set global innodb_file_format="Barracuda"; set global innodb_file_per_table=1; set global innodb_large_prefix=1; -- disable_warnings DROP TABLE IF EXISTS worklog5743; -- enable_warnings #------------------------------------------------------------------------------ # Prefix index with VARCHAR data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); # check IS SELECT COLUMN_NAME,INDEX_NAME,SUB_PART,INDEX_TYPE FROM INFORMATION_SCHEMA.STATISTICS WHERE table_name = 'worklog5743' ; INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_varchar = REPEAT("b", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743; --error ER_INDEX_COLUMN_TOO_LONG ALTER TABLE worklog5743 ROW_FORMAT=REDUNDANT; --error ER_INDEX_COLUMN_TOO_LONG ALTER TABLE worklog5743 ROW_FORMAT=COMPACT; ALTER TABLE worklog5743 ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=16; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with TEXT data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_text TEXT (4000) , col_2_text TEXT (4000) , PRIMARY KEY (col_1_text(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_text (3072)); # check IS SELECT COLUMN_NAME,INDEX_NAME,SUB_PART,INDEX_TYPE FROM INFORMATION_SCHEMA.STATISTICS WHERE table_name = 'worklog5743' ; INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("a", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("b", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with MEDIUMTEXT data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_mediumtext MEDIUMTEXT , col_2_mediumtext MEDIUMTEXT , PRIMARY KEY (col_1_mediumtext(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_mediumtext (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_mediumtext = REPEAT("a", 4000),col_2_mediumtext = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_mediumtext = REPEAT("c", 4000) WHERE col_1_mediumtext = REPEAT("a", 4000) AND col_2_mediumtext = REPEAT("o", 4000); SELECT col_1_mediumtext = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_mediumtext = REPEAT("c", 4000) AND col_2_mediumtext = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_mediumtext = REPEAT("b", 4000); SELECT col_1_mediumtext = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with LONGTEXT data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_longtext LONGTEXT , col_2_longtext LONGTEXT , PRIMARY KEY (col_1_longtext(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_longtext (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_longtext = REPEAT("a", 4000) , col_2_longtext = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_longtext = REPEAT("c", 4000) WHERE col_1_longtext = REPEAT("a", 4000) AND col_2_longtext = REPEAT("o", 4000); SELECT col_1_longtext = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_longtext = REPEAT("c", 4000) AND col_2_longtext = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_longtext = REPEAT("b", 4000); SELECT col_1_longtext = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with BLOB data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_blob BLOB (4000) , col_2_blob BLOB (4000) , PRIMARY KEY (col_1_blob(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_blob (3072)); # check IS SELECT COLUMN_NAME,INDEX_NAME,SUB_PART,INDEX_TYPE FROM INFORMATION_SCHEMA.STATISTICS WHERE table_name = 'worklog5743' ; INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_blob = REPEAT("a", 4000) , col_2_blob = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_blob = REPEAT("c", 4000) WHERE col_1_blob = REPEAT("a", 4000) AND col_2_blob = REPEAT("o", 4000); SELECT col_1_blob = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_blob = REPEAT("c", 4000) AND col_2_blob = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_blob = REPEAT("b", 4000); SELECT col_1_blob = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with MEDIUMBLOB data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_mediumblob MEDIUMBLOB , col_2_mediumblob MEDIUMBLOB , PRIMARY KEY (col_1_mediumblob(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_mediumblob (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_mediumblob = REPEAT("a", 4000),col_2_mediumblob = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_mediumblob = REPEAT("c", 4000) WHERE col_1_mediumblob = REPEAT("a", 4000) AND col_2_mediumblob = REPEAT("o", 4000); SELECT col_1_mediumblob = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_mediumblob = REPEAT("c", 4000) AND col_2_mediumblob = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_mediumblob = REPEAT("b", 4000); SELECT col_1_mediumblob = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with LONGBLOB data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_longblob LONGBLOB , col_2_longblob LONGBLOB , PRIMARY KEY (col_1_longblob(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_longblob (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_longblob = REPEAT("a", 4000) , col_2_longblob = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_longblob = REPEAT("c", 4000) WHERE col_1_longblob = REPEAT("a", 4000) AND col_2_longblob = REPEAT("o", 4000); SELECT col_1_longblob = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_longblob = REPEAT("c", 4000) AND col_2_longblob = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_longblob = REPEAT("b", 4000); SELECT col_1_longblob = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with VARBINARY data type , primary/secondary index and DML ops CREATE TABLE worklog5743 ( col_1_varbinary VARBINARY (4000) , col_2_varbinary VARBINARY (4000) , PRIMARY KEY (col_1_varbinary(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_varbinary (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_varbinary = REPEAT("a", 4000) , col_2_varbinary = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varbinary = REPEAT("c", 4000) WHERE col_1_varbinary = REPEAT("a", 4000) AND col_2_varbinary = REPEAT("o", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varbinary = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_varbinary = REPEAT("b", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with CHAR data type , composite index and DML ops CREATE TABLE worklog5743 (col_1_char CHAR (255) , col_2_char CHAR (255), col_3_char CHAR (255), col_4_char CHAR (255),col_5_char CHAR (255), col_6_char CHAR (255), col_7_char CHAR (255),col_8_char CHAR (255), col_9_char CHAR (255), col_10_char CHAR (255),col_11_char CHAR (255), col_12_char CHAR (255), col_13_char CHAR (255),col_14_char CHAR (255) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255) ); # Create index with total prefix index length = 3072 CREATE INDEX prefix_idx ON worklog5743(col_1_char(250),col_2_char(250), col_3_char(250),col_4_char(250),col_5_char(250),col_6_char(250), col_7_char(250),col_8_char(250),col_9_char(250),col_10_char(250), col_11_char(250),col_12_char(250),col_13_char(72) ); INSERT INTO worklog5743 VALUES(REPEAT("b", 255) , REPEAT("p", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255) ); SELECT col_1_char = REPEAT("a", 255) , col_2_char = REPEAT("o", 255) FROM worklog5743; UPDATE worklog5743 SET col_1_char = REPEAT("c", 255) WHERE col_1_char = REPEAT("a", 255) AND col_2_char = REPEAT("o", 255); SELECT col_1_char = REPEAT("c", 255) FROM worklog5743 WHERE col_1_char = REPEAT("c", 255) AND col_2_char = REPEAT("o", 255); INSERT INTO worklog5743 VALUES(REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255),REPEAT("a", 255) ); DELETE FROM worklog5743 WHERE col_1_char = REPEAT("b", 255); SELECT col_1_char = REPEAT("c", 255) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with BINARY data type , composite index and DML ops CREATE TABLE worklog5743 (col_1_binary BINARY (255) , col_2_binary BINARY (255), col_3_binary BINARY(255),col_4_binary BINARY (255),col_5_binary BINARY (255), col_6_binary BINARY(255),col_7_binary BINARY (255),col_8_binary BINARY (255), col_9_binary BINARY(255),col_10_binary BINARY (255),col_11_binary BINARY (255), col_12_binary BINARY(255),col_13_binary BINARY (255),col_14_binary BINARY (255) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255) ); # Create index with total prefix index length = 3072 CREATE INDEX prefix_idx ON worklog5743(col_1_binary (250),col_2_binary (250), col_3_binary (250),col_4_binary (250),col_5_binary (250), col_6_binary (250),col_7_binary (250),col_8_binary (250), col_9_binary (250),col_10_binary (250),col_11_binary (250), col_12_binary (250),col_13_binary (72) ); INSERT INTO worklog5743 VALUES(REPEAT("b", 255) , REPEAT("p", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255) ); SELECT col_1_binary = REPEAT("a", 255) , col_2_binary = REPEAT("o", 255) FROM worklog5743; UPDATE worklog5743 SET col_1_binary = REPEAT("c", 255) WHERE col_1_binary = REPEAT("a", 255) AND col_2_binary = REPEAT("o", 255); SELECT col_1_binary = REPEAT("c", 255) FROM worklog5743 WHERE col_1_binary = REPEAT("c", 255) AND col_2_binary = REPEAT("o", 255); INSERT INTO worklog5743 VALUES(REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255), REPEAT("a", 255) , REPEAT("o", 255), REPEAT("a", 255) ); DELETE FROM worklog5743 WHERE col_1_binary = REPEAT("b", 255); SELECT col_1_binary = REPEAT("c", 255) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with VARCHAR data type , primary/seconday index , DML ops # and COMPRESSED row format. KEY_BLOCK_SIZE is varied as 2 , 4 , 8. # With KEY_BLOCK_SIZE = 2,prefix index limit comes around ~948 for following CREATE TABLE worklog5743_key2 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(948)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2, engine = innodb; INSERT INTO worklog5743_key2 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key2 (col_1_varchar (767)); INSERT INTO worklog5743_key2 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743_key2; UPDATE worklog5743_key2 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743_key2 WHERE col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743_key2 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key2 WHERE col_1_varchar = REPEAT("b", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743_key2; DROP TABLE worklog5743_key2; # With KEY_BLOCK_SIZE = 4,prefix index limit comes around ~1964 for following CREATE TABLE worklog5743_key4 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(1964)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4, engine = innodb; INSERT INTO worklog5743_key4 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key4 (col_1_varchar (767)); INSERT INTO worklog5743_key4 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743_key4; UPDATE worklog5743_key4 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("b", 3500) FROM worklog5743_key4 WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743_key4 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key4 WHERE col_1_varchar = REPEAT("b", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743_key4; DROP TABLE worklog5743_key4; # With KEY_BLOCK_SIZE = 8,prefix index limit comes around ~3072 for following CREATE TABLE worklog5743_key8 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(3072)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=8, engine = innodb; INSERT INTO worklog5743_key8 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key8 (col_1_varchar (767)); INSERT INTO worklog5743_key8 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743_key8; UPDATE worklog5743_key8 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("b", 3500) FROM worklog5743_key8 WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743_key8 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key8 WHERE col_1_varchar = REPEAT("b", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743_key8; DROP TABLE worklog5743_key8; # Prefix index with TEXT data type , primary/seconday index , DML ops # and COMPRESSED row format. KEY_BLOCK_SIZE is varied as 2 , 4 , 8. # With KEY_BLOCK_SIZE = 2,prefix index limit comes around ~948 for following CREATE TABLE worklog5743_key2 ( col_1_text TEXT (4000) , col_2_text TEXT (4000) , PRIMARY KEY (col_1_text(948)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2, engine = innodb; INSERT INTO worklog5743_key2 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key2 (col_1_text (767)); INSERT INTO worklog5743_key2 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("a", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743_key2; UPDATE worklog5743_key2 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("b", 3500) FROM worklog5743_key2 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); INSERT INTO worklog5743_key2 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key2 WHERE col_1_text = REPEAT("b", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743_key2; DROP TABLE worklog5743_key2; # With KEY_BLOCK_SIZE = 4,prefix index limit comes around ~1964 for following CREATE TABLE worklog5743_key4 ( col_1_text TEXT (4000) , col_2_text TEXT (4000) , PRIMARY KEY (col_1_text(1964)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4, engine = innodb; INSERT INTO worklog5743_key4 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key4 (col_1_text (767)); INSERT INTO worklog5743_key4 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("a", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743_key4; UPDATE worklog5743_key4 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("b", 3500) FROM worklog5743_key4 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); INSERT INTO worklog5743_key4 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key4 WHERE col_1_text = REPEAT("b", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743_key4; DROP TABLE worklog5743_key4; # With KEY_BLOCK_SIZE = 8,prefix index limit comes around ~3072 for following CREATE TABLE worklog5743_key8 ( col_1_text TEXT (4000) , col_2_text TEXT (4000) , PRIMARY KEY (col_1_text(3072)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=8, engine = innodb; INSERT INTO worklog5743_key8 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key8 (col_1_text (767)); INSERT INTO worklog5743_key8 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("a", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743_key8; UPDATE worklog5743_key8 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("b", 3500) FROM worklog5743_key8 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); INSERT INTO worklog5743_key8 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key8 WHERE col_1_text = REPEAT("b", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743_key8; DROP TABLE worklog5743_key8; # Prefix index with BLOB data type , primary/seconday index , DML ops # and COMPRESSED row format. KEY_BLOCK_SIZE is varied as 2 , 4 , 8. # With KEY_BLOCK_SIZE = 2,prefix index limit comes around ~948 for following CREATE TABLE worklog5743_key2 ( col_1_blob BLOB (4000) , col_2_blob BLOB (4000) , PRIMARY KEY (col_1_blob(948)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2, engine = innodb; INSERT INTO worklog5743_key2 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key2 (col_1_blob (767)); INSERT INTO worklog5743_key2 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_blob = REPEAT("a", 4000) , col_2_blob = REPEAT("o", 4000) FROM worklog5743_key2; UPDATE worklog5743_key2 SET col_1_blob = REPEAT("c", 4000) WHERE col_1_blob = REPEAT("a", 4000) AND col_2_blob = REPEAT("o", 4000); SELECT col_1_blob = REPEAT("b", 3500) FROM worklog5743_key2 WHERE col_1_blob = REPEAT("c", 4000) AND col_2_blob = REPEAT("o", 4000); INSERT INTO worklog5743_key2 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key2 WHERE col_1_blob = REPEAT("b", 4000); SELECT col_1_blob = REPEAT("c", 4000) FROM worklog5743_key2; DROP TABLE worklog5743_key2; # With KEY_BLOCK_SIZE = 4,prefix index limit comes around ~1964 for following CREATE TABLE worklog5743_key4 ( col_1_blob BLOB (4000) , col_2_blob BLOB (4000) , PRIMARY KEY (col_1_blob(1964)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4, engine = innodb; INSERT INTO worklog5743_key4 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key4 (col_1_blob (767)); INSERT INTO worklog5743_key4 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_blob = REPEAT("a", 4000) , col_2_blob = REPEAT("o", 4000) FROM worklog5743_key4; UPDATE worklog5743_key4 SET col_1_blob = REPEAT("c", 4000) WHERE col_1_blob = REPEAT("a", 4000) AND col_2_blob = REPEAT("o", 4000); SELECT col_1_blob = REPEAT("b", 3500) FROM worklog5743_key4 WHERE col_1_blob = REPEAT("c", 4000) AND col_2_blob = REPEAT("o", 4000); INSERT INTO worklog5743_key4 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key4 WHERE col_1_blob = REPEAT("b", 4000); SELECT col_1_blob = REPEAT("c", 4000) FROM worklog5743_key4; DROP TABLE worklog5743_key4; # With KEY_BLOCK_SIZE = 8,prefix index limit comes around ~3072 for following CREATE TABLE worklog5743_key8 ( col_1_blob BLOB (4000) , col_2_blob BLOB (4000) , PRIMARY KEY (col_1_blob(3072)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=8, engine = innodb; INSERT INTO worklog5743_key8 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743_key8 (col_1_blob (767)); INSERT INTO worklog5743_key8 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_blob = REPEAT("a", 4000) , col_2_blob = REPEAT("o", 4000) FROM worklog5743_key8; UPDATE worklog5743_key8 SET col_1_blob = REPEAT("c", 4000) WHERE col_1_blob = REPEAT("a", 4000) AND col_2_blob = REPEAT("o", 4000); SELECT col_1_blob = REPEAT("b", 3500) FROM worklog5743_key8 WHERE col_1_blob = REPEAT("c", 4000) AND col_2_blob = REPEAT("o", 4000); INSERT INTO worklog5743_key8 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743_key8 WHERE col_1_blob = REPEAT("b", 4000); SELECT col_1_blob = REPEAT("c", 4000) FROM worklog5743_key8; DROP TABLE worklog5743_key8; #------------------------------------------------------------------------------ # Create mutiple prefix index. We can not create prefix index length > 16K # as index is written in undo log page which of 16K size. # So we can create max 2 prefix index of length 3072 on table CREATE TABLE worklog5743 ( col_1_varbinary VARBINARY (4000) , col_2_varchar VARCHAR (4000) , col_3_text TEXT (4000), col_4_blob BLOB (4000), col_5_text TEXT (4000), col_6_varchar VARCHAR (4000), col_7_binary BINARY (255) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); # Update reports ER_UNDO_RECORD_TOO_BIG if we create more than 2 indexes. # Bug#12547647 - UPDATE LOGGING COULD EXCEED LOG PAGE SIZE CREATE INDEX prefix_idx1 ON worklog5743(col_1_varbinary (3072)); CREATE INDEX prefix_idx2 ON worklog5743(col_2_varchar (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); SELECT col_1_varbinary = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varbinary = REPEAT("c", 4000) WHERE col_1_varbinary = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); DELETE FROM worklog5743 WHERE col_1_varbinary = REPEAT("b", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743; # Add 3 more indexes. # Update used to hang but now ER_UNDO_RECORD_TOO_BIG is reported; # Bug#12547647 - UPDATE LOGGING COULD EXCEED UNDO LOG PAGE SIZE INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); CREATE INDEX prefix_idx3 ON worklog5743(col_3_text (3072)); CREATE INDEX prefix_idx4 ON worklog5743(col_4_blob (3072)); CREATE INDEX prefix_idx5 ON worklog5743(col_5_text (3072)); --error ER_UNDO_RECORD_TOO_BIG UPDATE worklog5743 SET col_1_varbinary = REPEAT("c", 4000) WHERE col_1_varbinary = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SHOW WARNINGS; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Create mutiple prefix index. We can not create prefix index length > 16K as # we write in undo log page which of 16K size. # so we can create max 5 prefix index of length 3072 on table. # Similar to above case but with transactions CREATE TABLE worklog5743 ( col_1_varbinary VARBINARY (4000) , col_2_varchar VARCHAR (4000) , col_3_text TEXT (4000), col_4_blob BLOB (4000),col_5_text TEXT (4000), col_6_varchar VARCHAR (4000), col_7_binary BINARY (255) ) ROW_FORMAT=DYNAMIC, engine = innodb; # Update used to hang if we create following 5 indexes. Fixed in; # Bug#12547647 - UPDATE LOGGING COULD EXCEED UNDO LOG PAGE SIZE CREATE INDEX prefix_idx1 ON worklog5743(col_1_varbinary (3072)); CREATE INDEX prefix_idx2 ON worklog5743(col_2_varchar (3072)); CREATE INDEX prefix_idx3 ON worklog5743(col_3_text (3072)); CREATE INDEX prefix_idx4 ON worklog5743(col_4_blob (3072)); CREATE INDEX prefix_idx5 ON worklog5743(col_5_text (3072)); START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); SELECT col_1_varbinary = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; ROLLBACK; START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); COMMIT; SELECT col_1_varbinary = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); ROLLBACK; # Bug#12547647 - UPDATE LOGGING COULD EXCEED LOG PAGE SIZE # Instead of this error, it would hang before this fix. --error ER_UNDO_RECORD_TOO_BIG UPDATE worklog5743 SET col_1_varbinary = REPEAT("c", 4000) WHERE col_1_varbinary = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SHOW WARNINGS; SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); DELETE FROM worklog5743 WHERE col_1_varbinary = REPEAT("b", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with utf8 charset # utf8 charcter takes 3 bytes in mysql so prefix index limit is 3072/3 = 1024 CREATE TABLE worklog5743 ( col_1_text TEXT (4000) CHARACTER SET 'utf8', col_2_text TEXT (4000) CHARACTER SET 'utf8', PRIMARY KEY (col_1_text(1024)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_text (1024)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("a", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("b", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; # Prefix index with utf8 charset + varchar. # utf8 charcter takes 3 bytes in mysql so prefix index limit is 3072/3 = 1024 # This is a case where dict_index_too_big_for_undo() is too conservative. # If it did not return error 1118, to commented code would work. # See bug#12953735. --replace_regex /> [0-9]*/> max_row_size/ -- error ER_TOO_BIG_ROWSIZE CREATE TABLE worklog5743 (col_1_varchar VARCHAR (4000) CHARACTER SET 'utf8', col_2_varchar VARCHAR (4000) CHARACTER SET 'utf8' , PRIMARY KEY (col_1_varchar(1024)) ) ROW_FORMAT=DYNAMIC, engine = innodb; #INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); #CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (1024)); #INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); #SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; #UPDATE worklog5743 SET col_1_varchar = REPEAT("c", 4000) #WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); #SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743 #WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); #INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); #DELETE FROM worklog5743 WHERE col_1_varchar = REPEAT("b", 4000); #SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743; #DROP TABLE worklog5743; #------------------------------------------------------------------------------ # prefinx index on utf8 charset with transaction CREATE TABLE worklog5743 ( col_1_varbinary VARBINARY (4000) , col_2_varchar VARCHAR (4000) CHARACTER SET 'utf8', col_3_text TEXT (4000) CHARACTER SET 'utf8', col_4_blob BLOB (4000),col_5_text TEXT (4000), col_6_varchar VARCHAR (4000), col_7_binary BINARY (255) ) ROW_FORMAT=DYNAMIC, engine = innodb; CREATE INDEX prefix_idx2 ON worklog5743(col_2_varchar (500)); CREATE INDEX prefix_idx3 ON worklog5743(col_3_text (500)); START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); SELECT col_1_varbinary = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; ROLLBACK; START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); COMMIT; SELECT col_1_varbinary = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); ROLLBACK; SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000) , REPEAT("o", 4000), REPEAT("a", 4000), REPEAT("a", 4000) , REPEAT("a", 255) ); DELETE FROM worklog5743 WHERE col_1_varbinary = REPEAT("b", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with utf8 charset on TEXT data type with actual utf8 character # like "स" and "क" CREATE TABLE worklog5743 ( col_1_text TEXT (4000) CHARACTER SET 'utf8', col_2_text TEXT (4000) , PRIMARY KEY (col_1_text(1024)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("स", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_text (1024)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("स", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("क", 4000) WHERE col_1_text = REPEAT("स", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("क", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("b", 4000); SELECT col_1_text = REPEAT("क", 4000) FROM worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with transaction when 2 client are ruuning there transaction # in different sessions.With ISOLATION LEVEL as REPEATABLE READ and # READ UNCOMMITTED. CREATE TABLE worklog5743 ( col_1_text TEXT(4000) , col_2_text TEXT(4000) , PRIMARY KEY (col_1_text(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 200) , REPEAT("o", 200)); SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; --echo "In connection 1" --connect (con1,localhost,root,,) SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT COUNT(*) FROM worklog5743; --echo "In connection 2" --connect (con2,localhost,root,,) START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("b", 200) , REPEAT("o", 200)); # Uncomment after Bug#12552164 - TRANSACTION CAN NOT SEE OLD VERSION ROWS THAT # BEING UPDATED #UPDATE worklog5743 SET col_1_varchar = REPEAT("d", 200) WHERE col_1_varchar = #REPEAT("a", 200) AND col_2_varchar = REPEAT("o", 200); SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; --echo "In connection 1" --connection con1 select @@session.tx_isolation; SELECT col_1_text = REPEAT("b", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; select @@session.tx_isolation; SELECT col_1_text = REPEAT("b", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ; START TRANSACTION; SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT COUNT(*) FROM worklog5743; --echo "In connection 2" --connection con2 COMMIT; # Wait for commit let $wait_condition=SELECT COUNT(*)=0 FROM information_schema.processlist WHERE info='COMMIT'; --source include/wait_condition.inc --echo "In connection 1" --connection con1 SELECT col_1_text = REPEAT("b", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT COUNT(*) FROM worklog5743; COMMIT; --connection default DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with transaction when 2 client are ruuning there transaction # in different sessions.With ISOLATION LEVEL as REPEATABLE READ and # READ UNCOMMITTED. Same as above case but con2 starts tnx before con1 CREATE TABLE worklog5743 ( col_1_text TEXT(4000) , col_2_text TEXT(4000) , PRIMARY KEY (col_1_text(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 200) , REPEAT("o", 200)); SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; --echo "In connection 1" --connection con1 SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT COUNT(*) FROM worklog5743; START TRANSACTION; --echo "In connection 2" --connection con2 START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("b", 200) , REPEAT("o", 200)); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("a", 200); SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; COMMIT; # Wait for commit let $wait_condition=SELECT COUNT(*)=0 FROM information_schema.processlist WHERE info='COMMIT'; --source include/wait_condition.inc --echo "In connection 1" --connection con1 SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; select @@session.tx_isolation; SELECT col_1_text = REPEAT("b", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT col_1_text = REPEAT("b", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT COUNT(*) FROM worklog5743; COMMIT; --connection default DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with transaction when 2 client are ruuning there transaction # in different sessions.With ISOLATION LEVEL as REPEATABLE READ and # READ UNCOMMITTED. Same as above cases but with ROLLBACK CREATE TABLE worklog5743 ( col_1_text TEXT(4000) , col_2_text TEXT(4000) , PRIMARY KEY (col_1_text(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 200) , REPEAT("o", 200)); SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; --echo "In connection 1" --connection con1 SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT COUNT(*) FROM worklog5743; START TRANSACTION; --echo "In connection 2" --connection con2 START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("b", 200) , REPEAT("o", 200)); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("a", 200); SELECT col_1_text = REPEAT("a", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; ROLLBACK; # Wait for rollback let $wait_condition=SELECT COUNT(*)=0 FROM information_schema.processlist WHERE info='COMMIT'; --source include/wait_condition.inc --echo "In connection 1" --connection con1 SELECT col_1_text = REPEAT("b", 200) , col_2_text = REPEAT("o", 200) FROM worklog5743; SELECT COUNT(*) FROM worklog5743; COMMIT; --echo "Disconnect the connections 1 and 2" --disconnect con1 --source include/wait_until_disconnected.inc --connection con2 --disconnect con2 --source include/wait_until_disconnected.inc --connection default DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Select queries on prefix index column as index will be used in queries. # Use few select functions , join condition , subqueries. CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743; # Select with Join SELECT tbl1.col_1_varchar = tbl2.col_1_varchar FROM worklog5743 tbl1 , worklog5743 tbl2 WHERE tbl1.col_1_varchar = tbl2.col_1_varchar ; # Select in subquey SELECT tbl1.col_1_varchar = REPEAT("c", 4000) FROM worklog5743 tbl1 WHERE col_1_varchar IN (SELECT tbl2.col_1_varchar FROM worklog5743 tbl2) ; SELECT tbl1.col_1_varchar = REPEAT("c", 4000) FROM worklog5743 tbl1 WHERE col_1_varchar NOT IN (SELECT tbl2.col_1_varchar FROM worklog5743 tbl2) ; SELECT tbl1.col_1_varchar = REPEAT("c", 4000) FROM worklog5743 tbl1 WHERE col_1_varchar IN (SELECT tbl2.col_1_varchar FROM worklog5743 tbl2) AND col_1_varchar = REPEAT("c", 4000); SELECT tbl1.col_1_varchar = REPEAT("c", 4000) FROM worklog5743 tbl1 WHERE col_1_varchar in ( SELECT tbl2.col_1_varchar FROM worklog5743 tbl2 WHERE tbl1.col_1_varchar != tbl2.col_1_varchar ) ; SELECT tbl1.col_1_varchar = REPEAT("c", 4000) FROM worklog5743 tbl1 WHERE col_1_varchar in ( SELECT tbl2.col_1_varchar FROM worklog5743 tbl2 WHERE tbl1.col_1_varchar = tbl2.col_1_varchar ) ; # function SELECT REVERSE(col_1_varchar) = REPEAT("c", 4000) , REVERSE(REVERSE(col_1_varchar)) = REPEAT("c", 4000) FROM worklog5743; SELECT UPPER(col_1_varchar) = REPEAT("c", 4000) , UPPER(col_1_varchar) = REPEAT("C", 4000) , LOWER(UPPER(col_1_varchar)) = REPEAT("c", 4000) FROM worklog5743; SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varchar like '%c__%'; SELECT SUBSTRING(INSERT(col_1_varchar, 1, 4, 'kkkk'),1,10) FROM worklog5743 ; SELECT CONCAT(SUBSTRING(col_1_varchar,-5,3),'append') FROM worklog5743 ; DROP TABLE worklog5743; #------------------------------------------------------------------------------ # Prefix index with NULL values CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , UNIQUE INDEX (col_1_varchar(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(concat(REPEAT("a", 2000),REPEAT("b", 1000),REPEAT("c", 1000)), REPEAT("o", 4000)); INSERT INTO worklog5743 VALUES(concat(REPEAT("a", 2000),REPEAT("b", 2000)), REPEAT("o", 4000)); INSERT INTO worklog5743 VALUES(NULL,NULL); INSERT INTO worklog5743 VALUES(NULL,NULL); # check IS SELECT COLUMN_NAME,INDEX_NAME,SUB_PART,INDEX_TYPE FROM INFORMATION_SCHEMA.STATISTICS WHERE table_name = 'worklog5743' ; SELECT col_1_varchar FROM worklog5743 WHERE col_1_varchar IS NULL; SELECT col_1_varchar = concat(REPEAT("a", 2000),REPEAT("b", 2000)) FROM worklog5743 WHERE col_1_varchar IS NOT NULL ORDER BY 1; DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Try drop and add secondary prefix index CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(3072))) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); # Create index CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); # Drop index DROP INDEX prefix_idx ON worklog5743; SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); # Again add index CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_varchar = REPEAT("b", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Try drop and add primary prefix index CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY `prefix_primary` (col_1_varchar(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); # Create index CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); # Drop index ALTER TABLE worklog5743 DROP PRIMARY KEY; SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); # Again add index ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_varchar(3072)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); --error ER_DUP_ENTRY INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_varchar = REPEAT("b", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Try drop and add both (primary/secondary) prefix index CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY `prefix_primary` (col_1_varchar(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); # Create index CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); # Drop primary index ALTER TABLE worklog5743 DROP PRIMARY KEY; # Drop secondary index DROP INDEX prefix_idx ON worklog5743; SELECT col_1_varchar = REPEAT("a", 4000) , col_2_varchar = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varchar = REPEAT("c", 4000) WHERE col_1_varchar = REPEAT("a", 4000) AND col_2_varchar = REPEAT("o", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varchar = REPEAT("c", 4000) AND col_2_varchar = REPEAT("o", 4000); # Again add index ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_varchar(3072)); CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); --error ER_DUP_ENTRY INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); DELETE FROM worklog5743 WHERE col_1_varchar = REPEAT("b", 4000); SELECT col_1_varchar = REPEAT("c", 4000) FROM worklog5743; DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Drop index from differnt session CREATE TABLE worklog5743 ( col_1_varchar VARCHAR(4000) , col_2_varchar VARCHAR(4000) , PRIMARY KEY (col_1_varchar (3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("c", 3500) , REPEAT("o", 3500)); CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (3072)); # Start new session --connect (con1,localhost,root,,) --echo " Switching to con1 connection For select " --connection con1 SELECT col_1_varchar = REPEAT("c", 3500) , col_2_varchar = REPEAT("o", 3500) FROM worklog5743; --echo " Switching to default connection For DMLs " --connection default START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("a", 3500) , REPEAT("o", 3500)); SELECT col_1_varchar = REPEAT("b", 3500) FROM worklog5743 WHERE col_2_varchar = REPEAT("o", 3500); COMMIT; --echo " Switching to con1 connection For Dropping index and some DMLs " --connection con1 START TRANSACTION; INSERT INTO worklog5743 VALUES(REPEAT("k", 3500),REPEAT("p", 3500)); # Drop primary index ALTER TABLE worklog5743 DROP PRIMARY KEY; UPDATE worklog5743 SET col_1_varchar = REPEAT("b", 3500) WHERE col_1_varchar = REPEAT("a", 3500) AND col_2_varchar = REPEAT("o", 3500); SELECT col_1_varchar = REPEAT("b", 3500) FROM worklog5743 WHERE col_2_varchar = REPEAT("o", 3500); --echo " Switching to default connection For DELETE " --connection default DELETE FROM worklog5743 WHERE col_1_varchar = REPEAT("b", 3500); SELECT col_1_varchar = REPEAT("a", 3500) FROM worklog5743 WHERE col_2_varchar = REPEAT("p", 3500); --echo " Switching to con1 connection to commit changes " --connection con1 COMMIT; --echo " Switching to default connection to drop and end sub-test " --connection default DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Create prefix index with length < 3072 , length = 3072 , length > 3072 # - varbinary data type + secondary index CREATE TABLE worklog5743 ( col_1_varbinary VARBINARY (4000) , col_2_varbinary VARBINARY (4000) , PRIMARY KEY (col_1_varbinary(3072))) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); # Create index of 3072 CREATE INDEX prefix_idx ON worklog5743(col_1_varbinary (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_varbinary = REPEAT("a", 4000) , col_2_varbinary = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varbinary = REPEAT("c", 4000) WHERE col_1_varbinary = REPEAT("a", 4000) AND col_2_varbinary = REPEAT("o", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varbinary = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varbinary = REPEAT("o", 4000); # Drop index DROP INDEX prefix_idx ON worklog5743; SELECT col_1_varbinary = REPEAT("b", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("b", 4000) AND col_2_varbinary = REPEAT("p", 4000); # Again add index length < 3072 CREATE INDEX prefix_idx ON worklog5743(col_1_varbinary (2000)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); SELECT col_1_varbinary = REPEAT("a", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varbinary = REPEAT("c", 4000) WHERE col_1_varbinary = REPEAT("a", 4000) AND col_2_varbinary = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varbinary = REPEAT("o", 4000); # Drop index DROP INDEX prefix_idx ON worklog5743; # Again add index length > 3072. # If "innodb_large_prefix" is turned on, than the index prefix larger than 3072 # will be truncated to 3072. If the table is REDUNDANT and COMPACT, which does # not support prefix > 767, the create index will be rejected. CREATE INDEX prefix_idx ON worklog5743(col_1_varbinary (4000)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); SELECT col_1_varbinary = REPEAT("a", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_varbinary = REPEAT("c", 4000) WHERE col_1_varbinary = REPEAT("a", 4000) AND col_2_varbinary = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000); SELECT col_1_varbinary = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_varbinary = REPEAT("c", 4000) AND col_2_varbinary = REPEAT("o", 4000); DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Create prefix index with length < 3072 , length = 3072 , length > 3072 # text data type + secondary index CREATE TABLE worklog5743 (col_1_text TEXT (4000) , col_2_text TEXT (4000) , PRIMARY KEY (col_1_text(500)) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); # Create index of 3072 CREATE INDEX prefix_idx ON worklog5743(col_1_text (3072)); INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("a", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); # Drop index DROP INDEX prefix_idx ON worklog5743; SELECT col_1_text = REPEAT("b", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("b", 4000) AND col_2_text = REPEAT("p", 4000); # Again add index length < 3072 CREATE INDEX prefix_idx ON worklog5743(col_1_text (1000)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); SELECT col_1_text = REPEAT("a", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); # Drop index DROP INDEX prefix_idx ON worklog5743; # Again add index length > 3072. Expect error.Length exceeds maximum supported # key length # Again add index length > 3072. # If "innodb_large_prefix" is turned on, than the index prefix larger than 3072 # will be truncated to 3072. If the table is REDUNDANT and COMPACT, which does # not support prefix > 767, the create index will be rejected. CREATE INDEX prefix_idx ON worklog5743(col_1_text (4000)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); SELECT col_1_text = REPEAT("a", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Create prefix index with length < 948 , length = 948 , length > 948 # For compressed row type + primary key CREATE TABLE worklog5743 ( col_1_text TEXT (4000) , col_2_text TEXT (4000) , PRIMARY KEY (col_1_text(948)) ) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2, engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT("a", 4000) , REPEAT("o", 4000)); # Create index of 767 INSERT INTO worklog5743 VALUES(REPEAT("b", 4000) , REPEAT("p", 4000)); SELECT col_1_text = REPEAT("a", 4000) , col_2_text = REPEAT("o", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); # Drop index #DROP INDEX prefix_idx ON worklog5743; ALTER TABLE worklog5743 DROP PRIMARY KEY; SELECT col_1_text = REPEAT("b", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("b", 4000) AND col_2_text = REPEAT("p", 4000); # Again add index length < 767 ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_text (700)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); SELECT col_1_text = REPEAT("a", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); # Drop index ALTER TABLE worklog5743 DROP PRIMARY KEY; # Again add index length > 948. Expect error 'to big row ' due to exceed # in key length. -- error ER_TOO_BIG_ROWSIZE ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_text (950)); INSERT INTO worklog5743 VALUES(REPEAT("a", 4000),REPEAT("o", 4000)); SELECT col_1_text = REPEAT("a", 4000) FROM worklog5743; UPDATE worklog5743 SET col_1_text = REPEAT("c", 4000) WHERE col_1_text = REPEAT("a", 4000) AND col_2_text = REPEAT("o", 4000); DELETE FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000); SELECT col_1_text = REPEAT("c", 4000) FROM worklog5743 WHERE col_1_text = REPEAT("c", 4000) AND col_2_text = REPEAT("o", 4000); DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Create prefix index with length < 3072 , length = 3072 , length > 3072 # data types VARCHAR CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; ALTER TABLE worklog5743 DROP PRIMARY KEY; ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_varchar (900)); ALTER TABLE worklog5743 DROP PRIMARY KEY; # Again add index length > 3072. Expect error.Length exceeds maximum supported # key length # Again add index length > 3072. # If "innodb_large_prefix" is turned on, than the index prefix larger than 3072 # will be truncated to 3072. If the table is REDUNDANT and COMPACT, which does # not support prefix > 767, the create index will be rejected. # Index length is truncated only for 'create index' , but error if we add # prefix index with length > 3072 --error ER_TOO_LONG_KEY ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_varchar (3073)); DROP TABLE worklog5743; CREATE TABLE worklog5743 ( col_1_BLOB BLOB (4000) , PRIMARY KEY (col_1_BLOB(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; ALTER TABLE worklog5743 DROP PRIMARY KEY; ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_BLOB (500)); ALTER TABLE worklog5743 DROP PRIMARY KEY; # Negative case # Again add index length > 3072. Expect error.Length exceeds maximum supported # key length # Index length is truncated only for 'create index' , but error if we add # prefix index with length > 3072 --error ER_TOO_LONG_KEY ALTER TABLE worklog5743 ADD PRIMARY KEY (col_1_BLOB (3073)); DROP TABLE worklog5743; # ----------------------------------------------------------------------------- # Error on adding larger prefix if violates unique index. CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) ) ROW_FORMAT=DYNAMIC, engine = innodb; INSERT INTO worklog5743 VALUES(concat(REPEAT("a", 2000),REPEAT("b", 1000),REPEAT("c", 1000)), REPEAT("o", 4000)); INSERT INTO worklog5743 VALUES(concat(REPEAT("a", 2000),REPEAT("b", 2000)), REPEAT("o", 4000)); --error ER_DUP_ENTRY ALTER TABLE worklog5743 ADD PRIMARY KEY `pk_idx` (col_1_varchar(3000)); DROP TABLE worklog5743; # ----------------------------------------------------------------------------- set global innodb_large_prefix=0; # Prefix index > 767 is allowed if innodb_large_prefix is set to 1 --error ER_TOO_LONG_KEY CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(3072)) ) ROW_FORMAT=DYNAMIC, engine = innodb; # ----------------------------------------------------------------------------- set global innodb_large_prefix=0; # Backward compatibility test - Index lenghth > 767 is truncated for REDUNDANT # and COMPACT CREATE TABLE worklog5743 ( col_1_varchar VARCHAR (4000) , col_2_varchar VARCHAR (4000) , PRIMARY KEY (col_1_varchar(767)) ) engine = innodb; INSERT INTO worklog5743 VALUES(REPEAT('a',4000),REPEAT('b',4000)); # Prefix index > 767 is truncated with REDUNDANT and COMPACT --enable_info CREATE INDEX prefix_idx ON worklog5743(col_1_varchar (1000)); ALTER TABLE worklog5743 ROW_FORMAT=REDUNDANT; --disable_info SHOW CREATE TABLE worklog5743; DROP TABLE worklog5743; #------------------------------------------------------------------------------ --disable_query_log eval set global innodb_file_format = $innodb_file_format_orig; eval set global innodb_file_per_table = $innodb_file_per_table_orig; eval set global innodb_large_prefix = $innodb_large_prefix_orig; --echo "Disconnect the connection 1" --connection con1 --disconnect con1 --source include/wait_until_disconnected.inc --enable_query_log --connection default