Commit 5d44b2f3 authored by Martin Hansson's avatar Martin Hansson

Merge

parents 3cc3aa7d f2448c93
......@@ -2502,3 +2502,61 @@ a MAX(b)
2 1
DROP TABLE t;
End of 5.0 tests
CREATE TABLE t1 ( a INT, b INT, c INT, KEY bc(b, c) )
PARTITION BY KEY (a, b) PARTITIONS 3
;
INSERT INTO t1 VALUES
(17, 1, -8),
(3, 1, -7),
(23, 1, -6),
(22, 1, -5),
(11, 1, -4),
(21, 1, -3),
(19, 1, -2),
(30, 1, -1),
(20, 1, 1),
(16, 1, 2),
(18, 1, 3),
(9, 1, 4),
(15, 1, 5),
(28, 1, 6),
(29, 1, 7),
(25, 1, 8),
(10, 1, 9),
(13, 1, 10),
(27, 1, 11),
(24, 1, 12),
(12, 1, 13),
(26, 1, 14),
(14, 1, 15)
;
SELECT b, c FROM t1 WHERE b = 1 GROUP BY b, c;
b c
1 -8
1 -7
1 -6
1 -5
1 -4
1 -3
1 -2
1 -1
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
EXPLAIN
SELECT b, c FROM t1 WHERE b = 1 GROUP BY b, c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range bc bc 10 NULL 7 Using where; Using index for group-by
DROP TABLE t1;
......@@ -1018,3 +1018,43 @@ DROP TABLE t;
--echo End of 5.0 tests
#
# Bug#44821: select distinct on partitioned table returns wrong results
#
CREATE TABLE t1 ( a INT, b INT, c INT, KEY bc(b, c) )
PARTITION BY KEY (a, b) PARTITIONS 3
;
INSERT INTO t1 VALUES
(17, 1, -8),
(3, 1, -7),
(23, 1, -6),
(22, 1, -5),
(11, 1, -4),
(21, 1, -3),
(19, 1, -2),
(30, 1, -1),
(20, 1, 1),
(16, 1, 2),
(18, 1, 3),
(9, 1, 4),
(15, 1, 5),
(28, 1, 6),
(29, 1, 7),
(25, 1, 8),
(10, 1, 9),
(13, 1, 10),
(27, 1, 11),
(24, 1, 12),
(12, 1, 13),
(26, 1, 14),
(14, 1, 15)
;
SELECT b, c FROM t1 WHERE b = 1 GROUP BY b, c;
EXPLAIN
SELECT b, c FROM t1 WHERE b = 1 GROUP BY b, c;
DROP TABLE t1;
......@@ -8556,7 +8556,7 @@ int QUICK_RANGE_SELECT::get_next_prefix(uint prefix_length,
result= file->read_range_first(last_range->min_keypart_map ? &start_key : 0,
last_range->max_keypart_map ? &end_key : 0,
test(last_range->flag & EQ_RANGE),
sorted);
TRUE);
if (last_range->flag == (UNIQUE_RANGE | EQ_RANGE))
last_range= 0; // Stop searching
......
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