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5.3->5.5 merge
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@ -382,6 +382,26 @@ INSERT INTO t1 VALUES('A ', 'A ');
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ERROR 23000: Duplicate entry 'A -A ' for key 'key1'
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DROP TABLE t1;
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End of 5.0 tests
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#
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# MDEV-568 (AKA LP BUG#1007981, AKA MySQL bug#44771)
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# Wrong result for a hash index look-up if the index is unique and
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# the key is NULL
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#
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CREATE TABLE t1 ( pk INT PRIMARY KEY, val INT, UNIQUE KEY USING HASH(val)) ENGINE=MEMORY;
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INSERT INTO t1 VALUES (1, NULL);
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INSERT INTO t1 VALUES (2, NULL);
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INSERT INTO t1 VALUES (3, 1);
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INSERT INTO t1 VALUES (4, NULL);
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EXPLAIN SELECT * FROM t1 WHERE val IS NULL;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref val val 5 const 1 Using where
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SELECT * FROM t1 WHERE val IS NULL;
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pk val
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4 NULL
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2 NULL
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1 NULL
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drop table t1;
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End of 5.2 tests
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# bit index in heap tables
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create table t1 (a bit(63) not null) engine=heap;
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insert into t1 values (869751),(736494),(226312),(802616),(728912);
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@ -285,6 +285,23 @@ DROP TABLE t1;
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--echo End of 5.0 tests
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--echo #
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--echo # MDEV-568 (AKA LP BUG#1007981, AKA MySQL bug#44771)
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--echo # Wrong result for a hash index look-up if the index is unique and
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--echo # the key is NULL
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--echo #
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CREATE TABLE t1 ( pk INT PRIMARY KEY, val INT, UNIQUE KEY USING HASH(val)) ENGINE=MEMORY;
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INSERT INTO t1 VALUES (1, NULL);
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INSERT INTO t1 VALUES (2, NULL);
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INSERT INTO t1 VALUES (3, 1);
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INSERT INTO t1 VALUES (4, NULL);
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EXPLAIN SELECT * FROM t1 WHERE val IS NULL;
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SELECT * FROM t1 WHERE val IS NULL;
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drop table t1;
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--echo End of 5.2 tests
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-- echo # bit index in heap tables
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create table t1 (a bit(63) not null) engine=heap;
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