Merge "Perform a permission check on the title when changing the page language"

[lhc/web/wiklou.git] / includes / libs / rdbms / database / IDatabase.php

diff --git a/includes/libs/rdbms/database/IDatabase.php b/includes/libs/rdbms/database/IDatabase.php
index e463ea3..b82603e 100644 (file)
--- a/includes/libs/rdbms/database/IDatabase.php
+++ b/includes/libs/rdbms/database/IDatabase.php
@@ -1276,6 +1276,37 @@ interface IDatabase {
         */
        public function unionQueries( $sqls, $all );
 
+       /**
+        * Construct a UNION query for permutations of conditions
+        *
+        * Databases sometimes have trouble with queries that have multiple values
+        * for multiple condition parameters combined with limits and ordering.
+        * This method constructs queries for the Cartesian product of the
+        * conditions and unions them all together.
+        *
+        * @see IDatabase::select()
+        * @since 1.30
+        * @param string|array $table Table name
+        * @param string|array $vars Field names
+        * @param array $permute_conds Conditions for the Cartesian product. Keys
+        *  are field names, values are arrays of the possible values for that
+        *  field.
+        * @param string|array $extra_conds Additional conditions to include in the
+        *  query.
+        * @param string $fname Caller function name
+        * @param string|array $options Query options. In addition to the options
+        *  recognized by IDatabase::select(), the following may be used:
+        *   - NOTALL: Set to use UNION instead of UNION ALL.
+        *   - INNER ORDER BY: If specified and supported, subqueries will use this
+        *     instead of ORDER BY.
+        * @param string|array $join_conds Join conditions
+        * @return string SQL query string.
+        */
+       public function unionConditionPermutations(
+               $table, $vars, array $permute_conds, $extra_conds = '', $fname = __METHOD__,
+               $options = [], $join_conds = []
+       );
+
        /**
         * Returns an SQL expression for a simple conditional. This doesn't need
         * to be overridden unless CASE isn't supported in your DBMS.