50 lines
1.5 KiB
Plaintext
50 lines
1.5 KiB
Plaintext
#
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# Bug#22469130: FOREIGN KEY ON DELETE CASCADE NOT ALLOWED
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# WHEN A VIRTUAL INDEX EXISTS.
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# Add the VIRTUAL INDEX contains fk constraINT column
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# using INPLACE alter operatiON
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CREATE TABLE t1(fld1 INT NOT NULL PRIMARY KEY);
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CREATE TABLE t2(fld1 INT NOT NULL, fld2 INT NOT NULL,
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fld3 INT AS (fld2) VIRTUAL, KEY(fld1),
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FOREIGN KEY(fld1) REFERENCES t1(fld1) ON UPDATE CASCADE);
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INSERT INTO t1(fld1) VALUES(1);
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INSERT INTO t2(fld1, fld2) VALUES(1, 2);
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# restart
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UPDATE t1 SET fld1= 2;
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SELECT fld3, fld1 FROM t2;
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fld3 fld1
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2 2
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alter TABLE t2 ADD INDEX vk(fld3, fld1), ALGORITHM=INPLACE;
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UPDATE t1 SET fld1=3;
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SELECT fld3, fld1 FROM t2;
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fld3 fld1
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2 3
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EXPLAIN SELECT fld3, fld1 FROM t2;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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x x t2 x index x vk x x x x x
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DROP TABLE t2, t1;
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# TEMPORARY TABLE NAME and CHILD TABLE NAME are same
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CREATE TABLE t1(fld1 INT NOT NULL PRIMARY KEY);
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CREATE TABLE t2(fld1 INT NOT NULL,
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fld2 INT AS (fld1) VIRTUAL,
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KEY(fld2),
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FOREIGN KEY(fld1) REFERENCES t1(fld1)
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ON UPDATE CASCADE);
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INSERT INTO t1 VALUES(1), (2);
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INSERT INTO t2 VALUES(1, DEFAULT), (2, default);
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# restart
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CREATE TEMPORARY TABLE t2 (fld1 INT NOT NULL)ENGINE=INNODB;
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UPDATE t1 SET fld1= 3 WHERE fld1= 2;
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SELECT fld2 FROM t2;
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fld2
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1
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3
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EXPLAIN SELECT fld2 FROM t2;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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x x t2 x index x fld2 x x x x x
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CHECK TABLE t2;
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Table Op Msg_type Msg_text
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test.t2 check status OK
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DROP TABLE t2;
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DROP TABLE t2, t1;
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