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5a8e6230d7
normalize_cond() translated `WHERE col` into `WHERE col<>0`
But the opetator "not equal to 0" does not necessarily exists
for all data types.
For example, the query:
SELECT * FROM t1 WHERE inet6col;
was translated to:
SELECT * FROM t1 WHERE inet6col<>0;
which further failed with this error:
ERROR : Illegal parameter data types inet6 and bigint for operation '<>'
This patch changes the translation from `col<>0` to `col IS TRUE`.
So now
SELECT * FROM t1 WHERE inet6col;
gets translated to:
SELECT * FROM t1 WHERE inet6col IS TRUE;
Details:
1. Implementing methods:
- Field_longstr::val_bool()
- Field_string::val_bool()
- Item::val_int_from_val_str()
If the input contains bad data,
these methods raise a better error message:
Truncated incorrect BOOLEAN value
Before the change, the error was:
Truncated incorrect DOUBLE value
2. Fixing normalize_cond() to generate Item_func_istrue/Item_func_isfalse
instances instead of Item_func_ne/Item_func_eq
3. Making Item_func_truth sargable, so it uses the range optimizer.
Implementing the following methods:
- get_mm_tree(), get_mm_leaf(), add_key_fields() in Item_func_truth.
- get_func_mm_tree(), for all Item_func_truth descendants.
4. Implementing the method negated_item() for all Item_func_truth
descendants, so the negated item has a chance to be sargable:
For example,
WHERE NOT col IS NOT FALSE -- this notation is not sargable
is now translated to:
WHERE col IS FALSE -- this notation is sargable
62 lines
3.4 KiB
Text
62 lines
3.4 KiB
Text
#
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# BUG#22037930: INSERT IGNORE FAILS TO IGNORE
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# FOREIGN KEY CONSTRAINT
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# Setup.
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CREATE TABLE t1 (fld1 INT PRIMARY KEY) ENGINE=INNODB;
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CREATE TABLE t2 (fld2 INT, FOREIGN KEY (fld2) REFERENCES t1 (fld1))
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ENGINE=INNODB;
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INSERT INTO t1 VALUES(0);
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INSERT INTO t2 VALUES(0);
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# Without fix, an error is reported.
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INSERT IGNORE INTO t2 VALUES(1);
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Warnings:
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Warning 1452 Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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UPDATE IGNORE t2 SET fld2=20 WHERE fld2=0;
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UPDATE IGNORE t1 SET fld1=20 WHERE fld1=0;
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# Test for multi update.
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UPDATE IGNORE t1, t2 SET t2.fld2= t2.fld2 + 3;
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UPDATE IGNORE t1, t2 SET t1.fld1= t1.fld1 + 3;
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# Reports an error since IGNORE is not used.
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INSERT INTO t2 VALUES(1);
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ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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UPDATE t2 SET fld2=20 WHERE fld2=0;
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ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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UPDATE t1 SET fld1=20 WHERE fld1=0;
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ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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UPDATE t1, t2 SET t2.fld2= t2.fld2 + 3;
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ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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UPDATE t1, t2 SET t1.fld1= t1.fld1 + 3;
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ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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DROP TABLE t2, t1;
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#
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# BUG#22037930: INSERT IGNORE FAILS TO IGNORE FOREIGN
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# KEY CONSTRAINT
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CREATE TABLE t1 (fld1 INT PRIMARY KEY) ENGINE= INNODB;
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CREATE TABLE t2 (fld1 VARCHAR(10), fld2 INT NOT NULL,
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CONSTRAINT fk FOREIGN KEY (fld2) REFERENCES t1(fld1)) ENGINE= INNODB;
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# Without patch, reports incorrect error.
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INSERT INTO t2 VALUES('abc', 2) ON DUPLICATE KEY UPDATE fld1= 'def';
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ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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REPLACE INTO t2 VALUES('abc', 2);
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ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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INSERT IGNORE INTO t2 VALUES('abc', 2) ON DUPLICATE KEY UPDATE fld1= 'def';
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Warnings:
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Warning 1452 Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk` FOREIGN KEY (`fld2`) REFERENCES `t1` (`fld1`))
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DROP TABLE t2, t1;
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#
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# MDEV-26433: assertion: table->get_ref_count() == 0 in dict0dict.cc
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# line 1915
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#
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CREATE TEMPORARY TABLE v0 ( v1 TEXT ( 15 ) CHAR SET BINARY NOT NULL NOT NULL UNIQUE CHECK ( v1 ) ) REPLACE SELECT NULL AS v3 , 74 AS v2 ;
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ERROR HY000: Field 'v1' doesn't have a default value
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SET @@sql_mode='';
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CREATE TEMPORARY TABLE t1 (i TEXT(15) NOT NULL DEFAULT '' UNIQUE CHECK (i)) engine=innodb
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REPLACE SELECT NULL AS a;
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ERROR 23000: CONSTRAINT `t1.i` failed for `test`.`t1`
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SET @@sql_mode=DEFAULT;
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CREATE TEMPORARY TABLE t1 (i TEXT(15) NOT NULL DEFAULT '' UNIQUE CHECK (i)) engine=innodb
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REPLACE SELECT NULL AS a;
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ERROR 22007: Truncated incorrect BOOLEAN value: ''
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#
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# End of 10.5 tests
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#
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