coprocessor: support coalesce push down. (pingcap#4288)

rauno-palosaari · Aug 22, 2017 · 0b63d0c · 0b63d0c
1 parent 2a89535
commit 0b63d0c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/store/tikv/coprocessor.go b/store/tikv/coprocessor.go
@@ -68,7 +68,7 @@ func (c *CopClient) supportExpr(exprType tipb.ExprType) bool {
 	case tipb.ExprType_Plus, tipb.ExprType_Div, tipb.ExprType_Minus, tipb.ExprType_Mul:
 		return true
 	// control functions
-	case tipb.ExprType_Case, tipb.ExprType_If, tipb.ExprType_IfNull:
+	case tipb.ExprType_Case, tipb.ExprType_If, tipb.ExprType_IfNull, tipb.ExprType_Coalesce:
 		return true
 	// aggregate functions.
 	case tipb.ExprType_Count, tipb.ExprType_First, tipb.ExprType_Max, tipb.ExprType_Min, tipb.ExprType_Sum, tipb.ExprType_Avg: