vtgate support warnings

go/mysql/constants.go

@@ -231,6 +231,9 @@ const (
 const (
 	// ERVitessMaxRowsExceeded is when a user tries to select more rows than the max rows as enforced by vitess.
 	ERVitessMaxRowsExceeded = 10001
+
+	// ERVitessShardError is when a shard query fails in a partial scatter statement
+	ERVitessShardError = 10002
 )
 
 // Error codes for server-side errors.

go/sqltypes/value.go

@@ -110,6 +110,11 @@ func NewUint64(v uint64) Value {
 	return MakeTrusted(Uint64, strconv.AppendUint(nil, v, 10))
 }
 
+// NewUint32 builds an Uint32 Value.
+func NewUint32(v uint32) Value {
+	return MakeTrusted(Uint32, strconv.AppendUint(nil, uint64(v), 10))
+}
+
 // NewFloat64 builds an Float64 Value.
 func NewFloat64(v float64) Value {
 	return MakeTrusted(Float64, strconv.AppendFloat(nil, v, 'g', -1, 64))

go/vt/sqlparser/parse_test.go

@@ -1196,6 +1196,9 @@ var (
 	}, {
 		input:  "show warnings",
 		output: "show warnings",
+	}, {
+		input:  "select warnings from t",
+		output: "select `warnings` from t",
 	}, {
 		input:  "show foobar",
 		output: "show foobar",