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DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a <INT_COLUMN> PRIMARY KEY,
b <CHAR_COLUMN>
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
SHOW KEYS IN t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
t1 0 PRIMARY 1 a # # NULL NULL # #
INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b');
INSERT INTO t1 (a,b) VALUES (1,'c');
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
# Statement ended with one of expected results (ER_DUP_ENTRY,ER_DUP_KEY).
# If you got a difference in error message, just add it to rdiff file
DROP TABLE t1;
CREATE TABLE t1 (a <INT_COLUMN> PRIMARY KEY,
b <CHAR_COLUMN> PRIMARY KEY
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
ERROR 42000: Multiple primary key defined
CREATE TABLE t1 (a <INT_COLUMN>,
b <CHAR_COLUMN>,
PRIMARY KEY (a,b)
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
SHOW INDEX IN t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
t1 0 PRIMARY 1 a # # NULL NULL # #
t1 0 PRIMARY 2 b # # NULL NULL # #
INSERT INTO t1 (a,b) VALUES (1,'a'),(1,'b'),(2,'a'),(2,'b');
INSERT INTO t1 (a,b) VALUES (1,'b');
ERROR 23000: Duplicate entry '1-b' for key 'PRIMARY'
# Statement ended with one of expected results (ER_DUP_ENTRY,ER_DUP_KEY).
# If you got a difference in error message, just add it to rdiff file
DROP TABLE t1;
CREATE TABLE t1 (a <INT_COLUMN> KEY,
b <CHAR_COLUMN>,
<CUSTOM_INDEX> (b)
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
SHOW INDEX IN t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
t1 0 PRIMARY 1 a # # NULL NULL # #
t1 1 b 1 b # # NULL NULL # #
DROP TABLE t1;
CREATE TABLE t1 (a <INT_COLUMN>,
b <CHAR_COLUMN> PRIMARY KEY
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
SHOW INDEX IN t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
t1 0 PRIMARY 1 b # # NULL NULL # #
ALTER TABLE t1 DROP INDEX `PRIMARY`;
ALTER TABLE t1 ADD CONSTRAINT PRIMARY KEY pk (a);
SHOW KEYS IN t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
t1 0 PRIMARY 1 a # # NULL NULL # #
ALTER TABLE t1 DROP PRIMARY KEY;
DROP TABLE t1;
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