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Merge branch '10.11' into 11.2
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@ -205,10 +205,53 @@ set @trace=(select trace from information_schema.optimizer_trace);
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--source include/optimizer_trace_no_costs.inc
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select json_detailed(json_extract(@trace, '$**.join_limit_shortcut_choice')) as JS;
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set optimizer_search_depth=@tmp_osd;
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set optimizer_trace=@tmp_os;
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--echo # An extra testcase for MDEV-35164 (its main testcase is below).
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alter table t1 add unique key(col2);
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insert into t10 select * from t10;
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insert into t10 select * from t10;
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analyze table t10;
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--echo # This will not crash and also show that sorting is not done when
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--echo # ORDER BY only refers to const table columns:
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explain
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select
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*
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from
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t1
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join t10 on t1.a=t10.a
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join t11 on t1.b=t11.b
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where
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t1.col2=3
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order by
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t1.col1
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limit 10;
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drop table t1, t10, t11;
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set optimizer_join_limit_pref_ratio=default;
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--echo #
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--echo # MDEV-35072: Assertion failure with optimizer_join_limit_pref_ratio and 1-table select
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--echo #
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SET optimizer_join_limit_pref_ratio=1;
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CREATE TABLE t1 (c1 INT, INDEX(c1));
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INSERT INTO t1 VALUES (1),(2);
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SELECT * FROM t1 ORDER BY c1 LIMIT 1;
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DROP TABLE t1;
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--echo #
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--echo # MDEV-35164: optimizer_join_limit_pref_ratio: assertion when the ORDER BY table becomes constant
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--echo # Original testcase:
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--echo #
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SET optimizer_join_limit_pref_ratio=1;
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CREATE TABLE t1 (a INT KEY,b INT, KEY(b)) ;
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INSERT INTO t1 VALUES (2,NULL);
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INSERT INTO t1 VALUES (5,NULL);
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SELECT * FROM t1 NATURAL JOIN t1 AS t2 WHERE t1.b=NULL ORDER BY t1.a LIMIT 1;
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DROP TABLE t1;
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set optimizer_join_limit_pref_ratio=default;
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--echo #
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--echo # MDEV-35072: Assertion failure with optimizer_join_limit_pref_ratio and 1-table select
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