32 lines
1004 B
Plaintext
32 lines
1004 B
Plaintext
"WL6369 Explain for Connection"
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QUERY: SELECT group_concat(c order by (select c from t2 where t2.a=t1.a limit 1)) as grp from t1
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STATUS:NOT_EQUAL
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SYNC_POINT:before_reset_query_plan
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Diff: EXPLAIN NORMAL vs OTHER
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@@ -39,2 +39,3 @@
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"filtered": "25.00",
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+ "using_where": true,
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"cost_info": {
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@@ -48,4 +49,3 @@
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"c"
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- ],
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- "attached_condition": "(`test`.`t2`.`a` = `test`.`t1`.`a`)"
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+ ]
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}
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QUERY: SELECT * FROM t1 UNION SELECT * FROM t1 ORDER BY (SELECT a FROM t2 WHERE b = 12)
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STATUS:NOT_EQUAL
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SYNC_POINT:before_reset_query_plan
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Diff: EXPLAIN NORMAL vs OTHER
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@@ -79,2 +79,3 @@
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"filtered": "50.00",
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+ "using_where": true,
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"cost_info": {
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@@ -87,4 +88,3 @@
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"b"
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- ],
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- "attached_condition": "(`test`.`t2`.`b` = 12)"
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+ ]
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}
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QUERY: SELECT SQL_CALC_FOUND_ROWS 'foo' UNION SELECT 'bar' LIMIT 0
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STATUS: EQUAL
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