Dion Hulse bbaa6b6f71 Query: Avoid invalid SQL when building ORDER BY clause using long search strings.
The introduction of negative search terms in 4.4 [34934] introduced the
possibility that the ORDER BY clause of a search query could be assembled in
such a way as to create invalid syntax. The current changeset fixes this by
ensuring that the ORDER BY clause corresponding to the search terms is
excluded when it would otherwise be empty.

Merges [36251] to the 4.4 branch.
Props salvoaranzulla, boonebgorges.
Fixes #35361.


git-svn-id: https://develop.svn.wordpress.org/branches/4.4@36354 602fd350-edb4-49c9-b593-d223f7449a82
2016-01-20 04:37:13 +00:00
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