address comments

expression/integration_test.go

@@ -3526,7 +3526,7 @@ func (s *testIntegrationSuite) TestArithmeticBuiltin(c *C) {
 	c.Assert(err.Error(), Equals, "[types:1690]BIGINT UNSIGNED value is out of range in '(3, -3)'")
 	c.Assert(rs.Close(), IsNil)
 
-		tk.MustExec("drop table if exists t;")
+	tk.MustExec("drop table if exists t;")
 	tk.MustExec("CREATE TABLE t (c_varchar varchar(255), c_time time, nonzero int, zero int, c_int_unsigned int unsigned, c_timestamp timestamp, c_enum enum('a','b','c'));")
 	tk.MustExec("INSERT INTO t VALUE('abc', '12:00:00', 12, 0, 5, '2017-08-05 18:19:03', 'b');")
 	result = tk.MustQuery("select c_varchar div nonzero, c_time div nonzero, c_time div zero, c_timestamp div nonzero, c_timestamp div zero, c_varchar div zero from t;")

go.sum

@@ -418,8 +418,8 @@ github.com/pingcap/sysutil v0.0.0-20201130064824-f0c8aa6a6966 h1:JI0wOAb8aQML0vA
 github.com/pingcap/sysutil v0.0.0-20201130064824-f0c8aa6a6966/go.mod h1:EB/852NMQ+aRKioCpToQ94Wl7fktV+FNnxf3CX/TTXI=
 github.com/pingcap/tidb-tools v4.0.9-0.20201127090955-2707c97b3853+incompatible h1:ceznmu/lLseGHP/jKyOa/3u/5H3wtLLLqkH2V3ssSjg=
 github.com/pingcap/tidb-tools v4.0.9-0.20201127090955-2707c97b3853+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=
-github.com/pingcap/tipb v0.0.0-20201229060814-148bc717ce4c h1:kvrdp2hY+asgSvVXCj4eebA9DH4SSouRVQUZpa1Se/Y=
-github.com/pingcap/tipb v0.0.0-20201229060814-148bc717ce4c/go.mod h1:RtkHW8WbcNxj8lsbzjaILci01CtYnYbIkQhjyZWrWVI=
+github.com/pingcap/tipb v0.0.0-20210112083036-a8cb6dfd13a1 h1:abJJrt7jjlPD+kiKz0nDO+7hE8xKVXSeZEyZY+msFNU=
+github.com/pingcap/tipb v0.0.0-20210112083036-a8cb6dfd13a1/go.mod h1:RtkHW8WbcNxj8lsbzjaILci01CtYnYbIkQhjyZWrWVI=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=