added missing cases for DATETIME datatype

vendor/github.com/denisenkom/go-mssqldb/types.go

@@ -1178,6 +1178,8 @@ func makeGoLangTypeName(ti typeInfo) string {
 		return "IMAGE"
 	case typeVariant:
 		return "SQL_VARIANT"
+	case typeDateTime:
+		return "DATETIME"
 	default:
 		panic(fmt.Sprintf("not implemented makeDecl for type %d", ti.TypeId))
 	}
@@ -1297,6 +1299,8 @@ func makeGoLangTypeLength(ti typeInfo) (int64, bool) {
 		return 2147483647, true
 	case typeVariant:
 		return 0, false
+	case typeDateTime:
+		return 0, false
 	default:
 		panic(fmt.Sprintf("not implemented makeDecl for type %d", ti.TypeId))
 	}
@@ -1404,6 +1408,8 @@ func makeGoLangTypePrecisionScale(ti typeInfo) (int64, int64, bool) {
 		return 0, 0, false
 	case typeVariant:
 		return 0, 0, false
+	case typeDateTime:
+		return 0, 0, false
 	default:
 		panic(fmt.Sprintf("not implemented makeDecl for type %d", ti.TypeId))
 	}