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160d97a4aa
ha_partition stores records in array of m_ordered_rec_buffer and uses it for prio queue in ordered index scan. When the records are restored from the array the blob buffers may be already freed or rewritten. The solution is to take temporary ownership of cached blob buffers via String::swap(). When the record is restored from m_ordered_rec_buffer the ownership is returned to table fields. Cleanups: init_record_priority_queue(): removed needless !m_ordered_rec_buffer check as there is same assertion few lines before. dbug_print_row() for arbitrary row pointer
104 lines
3.2 KiB
Plaintext
104 lines
3.2 KiB
Plaintext
CREATE TABLE t1 (
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id INT NOT NULL,
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store_id INT NOT NULL,
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x INT GENERATED ALWAYS AS (id + store_id)
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)
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PARTITION BY RANGE (store_id) (
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PARTITION p0 VALUES LESS THAN (6),
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PARTITION p1 VALUES LESS THAN (11),
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PARTITION p2 VALUES LESS THAN (16),
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PARTITION p3 VALUES LESS THAN (21)
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);
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INSERT t1 (id, store_id) VALUES(1, 2), (3, 4), (3, 12), (4, 18);
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CREATE INDEX idx ON t1(x);
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SELECT x FROM t1;
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x
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3
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7
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15
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22
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DROP TABLE t1;
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create table t1 (i int, v int as (i) virtual)
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partition by range columns (i)
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subpartition by hash(v) subpartitions 3 (
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partition p1 values less than (3),
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partition pn values less than (maxvalue));
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insert t1 set i= 0;
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set statement sql_mode= '' for update t1 set i= 1, v= 2;
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Warnings:
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Warning 1906 The value specified for generated column 'v' in table 't1' has been ignored
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drop table t1;
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#
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# MDEV-18734 ASAN heap-use-after-free in my_strnxfrm_simple_internal upon update on versioned partitioned table
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#
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# Cover queue_fix() in ha_partition::handle_ordered_index_scan()
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create or replace table t1 (
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x int auto_increment primary key,
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b text, v mediumtext as (b) virtual,
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index (v(10))
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) partition by range columns (x) (
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partition p1 values less than (3),
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partition p2 values less than (6),
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partition p3 values less than (9),
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partition p4 values less than (12),
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partition p5 values less than (15),
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partition p6 values less than (17),
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partition p7 values less than (19),
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partition p8 values less than (21),
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partition p9 values less than (23),
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partition p10 values less than (25),
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partition p11 values less than (27),
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partition p12 values less than (29),
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partition p13 values less than (31),
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partition p14 values less than (33),
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partition p15 values less than (35),
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partition pn values less than (maxvalue));
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insert into t1 (b) values
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(repeat('q', 8192)), (repeat('z', 8192)), (repeat('a', 8192)), (repeat('b', 8192)),
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(repeat('x', 8192)), (repeat('y', 8192));
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insert t1 (b) select b from t1;
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insert t1 (b) select b from t1;
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insert t1 (b) select b from t1;
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insert t1 (b) select b from t1;
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select x, left(b, 10), left(v, 10) from t1 where x > 30 and x < 60 order by v;
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x left(b, 10) left(v, 10)
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33 aaaaaaaaaa aaaaaaaaaa
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39 aaaaaaaaaa aaaaaaaaaa
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45 aaaaaaaaaa aaaaaaaaaa
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51 aaaaaaaaaa aaaaaaaaaa
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57 aaaaaaaaaa aaaaaaaaaa
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34 bbbbbbbbbb bbbbbbbbbb
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40 bbbbbbbbbb bbbbbbbbbb
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46 bbbbbbbbbb bbbbbbbbbb
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52 bbbbbbbbbb bbbbbbbbbb
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58 bbbbbbbbbb bbbbbbbbbb
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31 qqqqqqqqqq qqqqqqqqqq
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37 qqqqqqqqqq qqqqqqqqqq
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43 qqqqqqqqqq qqqqqqqqqq
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49 qqqqqqqqqq qqqqqqqqqq
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55 qqqqqqqqqq qqqqqqqqqq
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35 xxxxxxxxxx xxxxxxxxxx
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41 xxxxxxxxxx xxxxxxxxxx
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47 xxxxxxxxxx xxxxxxxxxx
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53 xxxxxxxxxx xxxxxxxxxx
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59 xxxxxxxxxx xxxxxxxxxx
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36 yyyyyyyyyy yyyyyyyyyy
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42 yyyyyyyyyy yyyyyyyyyy
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48 yyyyyyyyyy yyyyyyyyyy
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54 yyyyyyyyyy yyyyyyyyyy
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32 zzzzzzzzzz zzzzzzzzzz
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38 zzzzzzzzzz zzzzzzzzzz
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44 zzzzzzzzzz zzzzzzzzzz
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50 zzzzzzzzzz zzzzzzzzzz
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56 zzzzzzzzzz zzzzzzzzzz
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update t1 set b= 'bar' where v > 'a' limit 20;
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drop table t1;
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# Cover return_top_record() in ha_partition::handle_ordered_index_scan()
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create table t1 (x int primary key, b tinytext, v text as (b) virtual)
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partition by range columns (x) (
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partition p1 values less than (4),
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partition pn values less than (maxvalue));
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insert into t1 (x, b) values (1, ''), (2, ''), (3, 'a'), (4, 'b');
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update t1 set b= 'bar' where x > 0 order by v limit 2;
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drop table t1;
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