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Fix for 937225: OUTER JOIN advice in JOI.003 is confusing

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Brian Fraser
2012-08-02 10:12:34 -03:00
parent bcf9eefc9f
commit 1c6206bf9d
1 changed files with 2 additions and 1 deletions
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bin/pt-query-advisor
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@@ -6897,7 +6897,8 @@ severity: warn
OUTER JOIN defeated. The reference to an outer table column in the WHERE clause OUTER JOIN defeated. The reference to an outer table column in the WHERE clause
prevents the OUTER JOIN from returning any non-matched rows, which implicitly prevents the OUTER JOIN from returning any non-matched rows, which implicitly
converts the query to an INNER JOIN. This is probably a bug in the query or a converts the query to an INNER JOIN. This is probably a bug in the query or a
misunderstanding of how OUTER JOIN works. misunderstanding of how OUTER JOIN works, as LEFT/RIGHT joins are a shortcut
for LEFT/RIGHT OUTER JOIN.
=item JOI.004 =item JOI.004