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Disable SELECT DISTINCT unless we know we need it

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This commit is contained in:
Ben Gotow 2016-01-20 17:40:18 -08:00
parent ffb5e0dfda
commit a3b1f77d45
1 changed files with 6 additions and 1 deletions
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7
src/mailbox-perspective.coffee
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@ -181,7 +181,12 @@ class CategoryMailboxPerspective extends MailboxPerspective
.where([Thread.attributes.categories.containsAny(_.pluck(@categories(), 'id'))])
.limit(0)
query.distinct() if @categories().length > 1
if @_categories.length > 1 and @accountIds.length < @_categories.length
# The user has multiple categories in the same account selected, which
# means our result set could contain multiple copies of the same threads
# (since we do an inner join) and we need SELECT DISTINCT. Note that this
# can be /much/ slower and we shouldn't do it if we know we don't need it.
query.distinct()
return new MutableQuerySubscription(query, {asResultSet: true})