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5.5 merge
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@@ -2483,6 +2483,17 @@ test
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2
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SET sql_mode='';
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#
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# MDEV-6484: Assertion `tab->ref.use_count' failed on query with joins, constant table, multi-part key
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#
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CREATE TABLE t1 (i1 INT, c1 VARCHAR(1)) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (6,'b');
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CREATE TABLE t2 (pk2 INT, i2 INT, c2 VARCHAR(1), PRIMARY KEY(pk2), KEY(pk2,i2)) ENGINE=MyISAM;
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INSERT INTO t2 VALUES (1,2,'s'),(2,4,'r'),(3,8,'m'),(4,4,'b'),(5,4,'x'),(6,7,'g'),(7,4,'p');
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SELECT i2 FROM t1 AS t1a STRAIGHT_JOIN ( t2 INNER JOIN t1 AS t1b ON (t1b.c1 = c2) ) ON (t1b.i1 = pk2 )
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WHERE t1a.c1 = c2 GROUP BY i2;
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i2
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DROP TABLE t1,t2;
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#
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# Bug #58782
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# Missing rows with SELECT .. WHERE .. IN subquery
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# with full GROUP BY and no aggr
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@@ -1580,7 +1580,9 @@ show open tables where f1()=0;
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drop table t1;
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drop function f1;
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select * from information_schema.tables where 1=sleep(100000);
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Got one of the listed errors
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select * from information_schema.columns where 1=sleep(100000);
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Got one of the listed errors
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explain select count(*) from information_schema.tables;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE tables ALL NULL NULL NULL NULL NULL Skip_open_table; Scanned all databases
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@@ -1,15 +1,19 @@
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SET DEBUG_SYNC = 'dispatch_command_before_set_time WAIT_FOR do_set_time';
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SELECT 1;
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SET DEBUG_SYNC = 'fill_schema_processlist_after_unow SIGNAL do_set_time WAIT_FOR fill_schema_proceed';
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SELECT INFO,TIME,TIME_MS FROM INFORMATION_SCHEMA.PROCESSLIST WHERE INFO IS NULL;
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SELECT ID, TIME,TIME_MS FROM INFORMATION_SCHEMA.PROCESSLIST WHERE CONCAT(":", ID, ":") = ":TID:";
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1
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1
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SET DEBUG_SYNC = 'now SIGNAL fill_schema_proceed';
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INFO TIME TIME_MS
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NULL 0 0.000
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ID TIME TIME_MS
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TID 0 0.000
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SET DEBUG_SYNC = 'dispatch_command_end SIGNAL query_done EXECUTE 2';
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SET DEBUG_SYNC= 'now WAIT_FOR query_done';
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SET DEBUG_SYNC= 'now SIGNAL nosignal';
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select sleep(5);
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sleep(5)
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0
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SET DEBUG_SYNC = 'now WAIT_FOR query_done';
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select command, time < 5 from information_schema.processlist where id != connection_id();
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command time < 5
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Sleep 1
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