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Meta: Simplify the delete all meta query in delete_metadata()
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Merge of [42913] to the 4.6 branch. Built from https://develop.svn.wordpress.org/branches/4.6@42915 git-svn-id: http://core.svn.wordpress.org/branches/4.6@42745 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -364,12 +364,11 @@ function delete_metadata($meta_type, $object_id, $meta_key, $meta_value = '', $d
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return false;
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if ( $delete_all ) {
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$value_clause = '';
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if ( '' !== $meta_value && null !== $meta_value && false !== $meta_value ) {
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$value_clause = $wpdb->prepare( " AND meta_value = %s", $meta_value );
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$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s AND meta_value = %s", $meta_key, $meta_value ) );
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} else {
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$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s", $meta_key ) );
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}
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$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s $value_clause", $meta_key ) );
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}
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/**
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