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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
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
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