diff --git a/mysql/errcode.go b/mysql/errcode.go
index 3e045e377..dacd6b2e1 100644
--- a/mysql/errcode.go
+++ b/mysql/errcode.go
@@ -975,6 +975,23 @@ const (
 	ErrUnsupportedValueForVar     = 8047
 	ErrUnsupportedIsolationLevel  = 8048
 
+	// Error codes used by TiDB ddl package
+	ErrUnsupportedDDLOperation  = 8200
+	ErrNotOwner                 = 8201
+	ErrCantDecodeIndex          = 8202
+	ErrInvalidDDLWorker         = 8203
+	ErrInvalidDDLJob            = 8204
+	ErrInvalidDDLJobFlag        = 8205
+	ErrWaitReorgTimeout         = 8206
+	ErrInvalidStoreVersion      = 8207
+	ErrUnknownTypeLength        = 8208
+	ErrUnknownFractionLength    = 8209
+	ErrInvalidDDLState          = 8210
+	ErrReorgPanic               = 8211
+	ErrInvalidSplitRegionRanges = 8212
+	ErrInvalidDDLJobVersion     = 8213
+	ErrCancelledDDLJob          = 8214
+
 	// TiKV/PD errors.
 	ErrPDServerTimeout    = 9001
 	ErrTiKVServerTimeout  = 9002
diff --git a/mysql/errname.go b/mysql/errname.go
index 900d64671..62dd24b47 100644
--- a/mysql/errname.go
+++ b/mysql/errname.go
@@ -970,6 +970,21 @@ var MySQLErrName = map[uint16]string{
 	ErrInvalidRecordKey:           "invalid record key",
 	ErrUnsupportedValueForVar:     "variable '%s' does not yet support value: %s",
 	ErrUnsupportedIsolationLevel:  "The isolation level '%s' is not supported. Set tidb_skip_isolation_level_check=1 to skip this error",
+	ErrInvalidDDLWorker:           "Invalid DDL worker",
+	ErrUnsupportedDDLOperation:    "Unsupported %s",
+	ErrNotOwner:                   "TiDB server is not a DDL owner",
+	ErrCantDecodeIndex:            "Cannot decode index value, because %s",
+	ErrInvalidDDLJob:              "Invalid DDL job",
+	ErrInvalidDDLJobFlag:          "Invalid DDL job flag",
+	ErrWaitReorgTimeout:           "Timeout waiting for data reorganization",
+	ErrInvalidStoreVersion:        "Invalid storage current version: %d",
+	ErrUnknownTypeLength:          "Unknown length for type %d",
+	ErrUnknownFractionLength:      "Unknown length for type %d and fraction %d",
+	ErrInvalidDDLJobVersion:       "Version %d of DDL job is greater than current one: %d",
+	ErrInvalidSplitRegionRanges:   "Failed to split region ranges",
+	ErrReorgPanic:                 "Reorg worker panic",
+	ErrInvalidDDLState:            "Invalid %s state: %v",
+	ErrCancelledDDLJob:            "Cancelled DDL job",
 
 	// TiKV/PD errors.
 	ErrPDServerTimeout:    "PD server timeout",