add error code (#678)

Author: cfzjywxk

mysql/errcode.go

@@ -1039,6 +1039,16 @@ const (
 	ErrCancelledDDLJob          = 8214
 	ErrRepairTable              = 8215
 	ErrInvalidAutoRandom        = 8216
+	ErrInvalidHashKeyFlag       = 8217
+	ErrInvalidListIndex         = 8218
+	ErrInvalidListMetaData      = 8219
+	ErrWriteOnSnapshot          = 8220
+	ErrInvalidKey               = 8221
+	ErrInvalidIndexKey          = 8222
+	ErrDataInConsistent         = 8223
+	ErrDDLJobNotFound           = 8224
+	ErrCancelFinishedDDLJob     = 8225
+	ErrCannotCancelDDLJob       = 8226
 
 	// TiKV/PD errors.
 	ErrPDServerTimeout    = 9001

mysql/errname.go

@@ -1018,6 +1018,16 @@ var MySQLErrName = map[uint16]string{
 	ErrSnapshotTooOld:             "snapshot is older than GC safe point %s",
 	ErrInvalidTableID:             "invalid TableID",
 	ErrInvalidAutoRandom:          "Invalid auto random: %s",
+	ErrInvalidHashKeyFlag:         "invalid encoded hash key flag",
+	ErrInvalidListIndex:           "invalid list index",
+	ErrInvalidListMetaData:        "invalid list meta data",
+	ErrWriteOnSnapshot:            "write on snapshot",
+	ErrInvalidKey:                 "invalid key",
+	ErrInvalidIndexKey:            "invalid index key",
+	ErrDataInConsistent:           "data isn't equal",
+	ErrDDLJobNotFound:             "DDL Job:%v not found",
+	ErrCancelFinishedDDLJob:       "This job:%v is finished, so can't be cancelled",
+	ErrCannotCancelDDLJob:         "This job:%v is almost finished, can't be cancelled now",
 
 	ErrUnsupportedType:                     "Unsupported type %T",
 	ErrAnalyzeMissIndex:                    "Index '%s' in field list does not exist in table '%s'",