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67 lines
2.9 KiB
Text
67 lines
2.9 KiB
Text
CREATE TABLE t1 (a <INT_COLUMN>,
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b <CHAR_COLUMN>,
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<CUSTOM_INDEX> (a)
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) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW KEYS IN t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
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t1 1 a 1 a # # NULL NULL # BTREE
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>,
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b <CHAR_COLUMN>,
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<CUSTOM_INDEX> a_b (a,b) COMMENT 'a_b index'
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) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW KEYS IN t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
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t1 1 a_b 1 a # # NULL NULL # BTREE a_b index
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t1 1 a_b 2 b # # NULL NULL # BTREE a_b index
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>,
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b <CHAR_COLUMN>,
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<CUSTOM_INDEX> (a),
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<CUSTOM_INDEX> (b)
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) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW KEYS IN t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
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t1 1 a 1 a # # NULL NULL # BTREE
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t1 1 b 1 b # # NULL NULL # BTREE
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>,
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b <CHAR_COLUMN>,
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UNIQUE INDEX (a)
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) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW KEYS IN t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
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t1 0 a 1 a # # NULL NULL # BTREE
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INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b');
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INSERT INTO t1 (a,b) VALUES (1,'c');
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ERROR 23000: Duplicate entry '1' for key 'a'
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# Statement ended with one of expected results (ER_DUP_ENTRY,ER_DUP_KEY).
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# If you got a difference in error message, just add it to rdiff file
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>, b <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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INSERT INTO t1 (a,b) VALUES (100,'z');
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ALTER TABLE t1 ADD <CUSTOM_INDEX> (a) COMMENT 'simple index on a';
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SHOW INDEX FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
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t1 1 a 1 a # # NULL NULL # BTREE simple index on a
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ALTER TABLE t1 DROP KEY a;
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>,
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b <CHAR_COLUMN>,
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UNIQUE INDEX (a)
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) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW KEYS IN t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
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t1 0 a 1 a # # NULL NULL # BTREE
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INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b');
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INSERT INTO t1 (a,b) VALUES (1,'c');
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ERROR 23000: Duplicate entry '1' for key 'a'
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# Statement ended with one of expected results (ER_DUP_ENTRY,ER_DUP_KEY).
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# If you got a difference in error message, just add it to rdiff file
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ALTER TABLE t1 DROP INDEX a;
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INSERT INTO t1 (a,b) VALUES (1,'c');
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ALTER TABLE t1 ADD UNIQUE INDEX a(a) ;
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ERROR 23000: Duplicate entry '1' for key 'a'
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# Statement ended with one of expected results (ER_DUP_ENTRY,ER_DUP_KEY).
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# If you got a difference in error message, just add it to rdiff file
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DROP TABLE t1;
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