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5.3 merge
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@ -316,7 +316,7 @@ INSERT INTO t1 VALUES (1);
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INSERT INTO t2 VALUES (1);
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DELETE IGNORE FROM t1 WHERE i = 1;
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Warnings:
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Error 1451 Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`i`) REFERENCES `t1` (`i`) ON DELETE NO ACTION)
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Warning 1451 Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`i`) REFERENCES `t1` (`i`) ON DELETE NO ACTION)
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SELECT * FROM t1, t2;
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i i
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1 1
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@ -1430,9 +1430,9 @@ DROP TABLE t1;
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create table t1 (a bit(1) not null,b int) engine=myisam;
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create table t2 (c int) engine=innodb;
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set @save_optimizer_switch=@@optimizer_switch;
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set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=off';
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set @@optimizer_switch='in_to_exists=on,materialization=off';
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explain
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select b from t1 where a not in (select b from t1,t2 group by a) group by a;
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select b from t1 where a not in (select max(b) from t1,t2 group by a) group by a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
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2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
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@ -2685,11 +2685,54 @@ rows 3
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Extra Using index
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DROP TABLE t1;
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#
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# Bug#56862 Execution of a query that uses index merge returns a wrong result
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#
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CREATE TABLE t1 (
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pk int NOT NULL AUTO_INCREMENT PRIMARY KEY,
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a int,
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b int,
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INDEX idx(a))
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ENGINE=INNODB;
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INSERT INTO t1(a,b) VALUES
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(11, 1100), (2, 200), (1, 100), (14, 1400), (5, 500),
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(3, 300), (17, 1700), (4, 400), (12, 1200), (8, 800),
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(6, 600), (18, 1800), (9, 900), (10, 1000), (7, 700),
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(13, 1300), (15, 1500), (19, 1900), (16, 1600), (20, 2000);
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INSERT INTO t1(a,b) SELECT a+20, b+2000 FROM t1;
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INSERT INTO t1(a,b) SELECT a+40, b+4000 FROM t1;
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INSERT INTO t1(a,b) SELECT a+80, b+8000 FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1(a,b) SELECT a,b FROM t1;
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INSERT INTO t1 VALUES (1000000, 0, 0);
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SET SESSION sort_buffer_size = 1024*36;
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EXPLAIN
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SELECT COUNT(*) FROM
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(SELECT * FROM t1 FORCE INDEX (idx,PRIMARY)
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WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge PRIMARY,idx idx,PRIMARY 5,4 NULL 1536 Using sort_union(idx,PRIMARY); Using where
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SELECT COUNT(*) FROM
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(SELECT * FROM t1 FORCE INDEX (idx,PRIMARY)
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WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
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COUNT(*)
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1537
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SET SESSION sort_buffer_size = DEFAULT;
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DROP TABLE t1;
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#
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# ALTER TABLE IGNORE didn't ignore duplicates for unique add index
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#
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create table t1 (a int primary key, b int) engine = innodb;
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insert into t1 values (1,1),(2,1);
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alter ignore table t1 add unique `main` (b);
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select * from t1;
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a b
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1 1
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drop table t1;
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End of 5.1 tests
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#
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@ -2737,8 +2780,7 @@ SELECT COUNT(*) FROM
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(SELECT * FROM t1 FORCE INDEX (idx,PRIMARY)
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WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> ALL NULL NULL NULL NULL 1536
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2 DERIVED t1 index_merge PRIMARY,idx idx,PRIMARY 5,4 NULL 1536 Using sort_union(idx,PRIMARY); Using where
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1 SIMPLE t1 index_merge PRIMARY,idx idx,PRIMARY 5,4 NULL 1536 Using sort_union(idx,PRIMARY); Using where
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SELECT COUNT(*) FROM
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(SELECT * FROM t1 FORCE INDEX (idx,PRIMARY)
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WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
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