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MDEV-27206: [ERROR] Duplicated key: cause, Assertion `is_uniq_key' failed with optimizer trace

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This commit is contained in:
Sergei Krivonos
2021-12-09 11:05:14 +02:00
committed by Sergei Krivonos
parent ccdf5711a8
commit ea94895369
3 changed files with 28 additions and 1 deletions
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13
mysql-test/main/explain_json.result
View File

@ -2000,3 +2000,16 @@ EXPLAIN
}
}
DROP TABLE t1;
#
# MDEV-27206: [ERROR] Duplicated key: cause, Assertion `is_uniq_key' failed with optimizer trace
#
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
CREATE TABLE t2 (pk TIME, b INT, primary key (pk), key (b)) ENGINE=MyISAM;
INSERT INTO t2 VALUES
('00:13:33',0),('00:13:34',1),('00:13:35',2),('00:13:36',3),
('00:13:37',4),('00:13:38',5),('00:13:39',6),('00:13:40',7),
('00:13:41',8),('00:13:42',9);
SET optimizer_trace = 'enabled=on';
SELECT * FROM t1 WHERE a IN ( SELECT b FROM t2 INNER JOIN t1 ON (a = pk) );
a
DROP TABLE t1, t2;

14
mysql-test/main/explain_json.test
View File

@ -429,3 +429,17 @@ explain FORMAT=JSON
SELECT * FROM t1 t0
WHERE t0.a IN (SELECT t2.a FROM t1 t2 WHERE t0.a IN (SELECT t3.a FROM t1 t3));
DROP TABLE t1;
--echo #
--echo # MDEV-27206: [ERROR] Duplicated key: cause, Assertion `is_uniq_key' failed with optimizer trace
--echo #
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
CREATE TABLE t2 (pk TIME, b INT, primary key (pk), key (b)) ENGINE=MyISAM;
INSERT INTO t2 VALUES
('00:13:33',0),('00:13:34',1),('00:13:35',2),('00:13:36',3),
('00:13:37',4),('00:13:38',5),('00:13:39',6),('00:13:40',7),
('00:13:41',8),('00:13:42',9);
SET optimizer_trace = 'enabled=on';
SELECT * FROM t1 WHERE a IN ( SELECT b FROM t2 INNER JOIN t1 ON (a = pk) );
DROP TABLE t1, t2;

2
sql/sql_select.cc
View File

@ -7891,7 +7891,7 @@ best_access_path(JOIN *join,
/* quick_range couldn't use key! */
records= (double) s->records/rec;
trace_access_idx.add("used_range_estimates", false)
.add("cause", "not available");
.add("reason", "not available");
}
}
else