patched binary walk

Author: adranwit

expr/binary.go

@@ -40,6 +40,13 @@ func (b *Binary) Walk(fn func(ident node.Node, values *Values, operator, parentO
 				return err
 			}
 		}
+		if y, ok := b.Y.(*Parenthesis); ok {
+			if nested, ok := y.X.(*Binary); ok {
+				if err := nested.walk(fn, b.Op); err != nil {
+					return err
+				}
+			}
+		}
 		return nil
 	}
 	return b.walk(fn, "")

query_test.go

@@ -13,7 +13,7 @@ import (
 )
 
 func TestBinaryWalk(t *testing.T) {
-	query, _ := ParseQuery("SELECT * FROM t WHERE a = 1 AND b = 2 AND (c IN(1,2))")
+	query, _ := ParseQuery("SELECT * FROM t WHERE a = 1  AND (c IN(1,2))")
 	binary, ok := query.Qualify.X.(*expr.Binary)
 	if !assert.True(t, ok) {
 		return
@@ -23,7 +23,7 @@ func TestBinaryWalk(t *testing.T) {
 		actualColumns = append(actualColumns, Stringify(ident))
 		return nil
 	})
-	assert.EqualValues(t, []string{"a", "b", "c"}, actualColumns)
+	assert.EqualValues(t, []string{"a", "c"}, actualColumns)
 
 }