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Fixed crash in is_stat_table() when using hash joins.

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Other usage if persistent statistics is checking 'stats_is_read' in
caller, which is why this was not noticed earlier.

Other things:
- Simplified no_stat_values_provided
This commit is contained in:
Monty
2023-10-18 17:13:21 +03:00
parent 6991b1c47c
commit a1b6befc78
4 changed files with 57 additions and 9 deletions
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27
mysql-test/main/analyze.test
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@ -269,6 +269,33 @@ alter ignore table t1 rename key `b` to `B`, LOCK=shared;
select * from mysql.index_stats where table_name= "t1";
drop table t1;
--echo #
--echo # Crash inis_eits_usable()
--echo #
CREATE TABLE t1 (a int) ENGINE=MyISAM;
CREATE TABLE t2 (b int) ENGINE=MyISAM;
INSERT INTO t1 (a) VALUES (4), (6);
INSERT INTO t2 (b) VALUES (0), (8);
set @save_join_cache_level=@@join_cache_level;
set @save_optimizer_switch=@@optimizer_switch;
SET join_cache_level=3;
SET optimizer_switch='join_cache_hashed=on';
SET optimizer_switch='join_cache_bka=on';
set optimizer_switch='hash_join_cardinality=on';
select benchmark(1,1);
EXPLAIN
SELECT * FROM t1, t2 WHERE b=a;
SELECT * FROM t1, t2 WHERE b=a;
DROP TABLE t1,t2;
set @@optimizer_switch=@save_optimizer_switch;
set @@join_cache_level=@save_join_cache_level;
--echo #
--echo # End of 10.6 tests
--echo #