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Merge enabling of materialization=on by default with main tree.
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commit
f0d9908fc3
31 changed files with 342 additions and 225 deletions
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@ -2256,8 +2256,9 @@ id select_type table type possible_keys key key_len ref rows Extra
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EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE
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a IN (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1_outer index NULL a 10 NULL 15 Using where; Using index
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2 DEPENDENT SUBQUERY t1 index NULL a 10 NULL 1 Using index
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1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 15 Using where
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1 PRIMARY t1_outer ref a a 5 <subquery2>.max(b) 1 Using index
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2 SUBQUERY t1 index NULL a 10 NULL 15 Using index
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EXPLAIN SELECT 1 FROM t1 AS t1_outer GROUP BY a HAVING
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a > (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2);
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id select_type table type possible_keys key key_len ref rows Extra
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@ -2835,9 +2835,10 @@ Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cac
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explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00
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1 PRIMARY t2 ALL NULL NULL NULL NULL 9 100.00 Using where; FirstMatch(t1)
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 10 func,func 1 100.00
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2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where
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Warnings:
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Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`two` = `test`.`t1`.`two`) and (`test`.`t2`.`one` = `test`.`t1`.`one`) and (`test`.`t2`.`flag` = 'N'))
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Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`flag` = 'N'))
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explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00
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@ -3427,7 +3428,8 @@ EXPLAIN
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SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 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 t1 ALL NULL NULL NULL NULL 9 Using where
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2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
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2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
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ALTER TABLE t1 ADD INDEX(a);
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SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
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a b
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@ -3437,8 +3439,9 @@ AAA 8
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EXPLAIN
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SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 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 t1 ALL NULL NULL NULL NULL 9 Using where
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2 DEPENDENT SUBQUERY t1 index NULL a 8 NULL 1
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1 PRIMARY t1 ALL a NULL NULL NULL 9 Using where
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
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2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
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DROP TABLE t1;
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create table t1( f1 int,f2 int);
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insert into t1 values (1,1),(2,2);
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