Always set groupby when a tax query is involved. See #15752
git-svn-id: https://develop.svn.wordpress.org/trunk@16894 602fd350-edb4-49c9-b593-d223f7449a82
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@ -1980,7 +1980,7 @@ class WP_Query {
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}
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}
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if ( $this->is_category || $this->is_tag || $this->is_tax || !empty( $q['meta_key'] ) ) {
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if ( !empty( $this->tax_query->queries ) || !empty( $q['meta_key'] ) ) {
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$groupby = "{$wpdb->posts}.ID";
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}
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