1 files changed, 4 insertions, 0 deletions
diff --git a/lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php b/lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php
index 2789b8cb356..1d745306351 100644
--- a/lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php
+++ b/lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php
@@ -59,4 +59,8 @@ class FunctionBuilder implements IFunctionBuilder {
 	public function sum($field) {
 		return new QueryFunction('SUM(' . $this->helper->quoteColumnName($field) . ')');
 	}
+
+	public function lower($field) {
+		return new QueryFunction('LOWER(' . $this->helper->quoteColumnName($field) . ')');
+	}
 }