parser: add autoid cache option (pingcap#765)

ast/ddl.go

@@ -1304,6 +1304,7 @@ const (
 	TableOptionEngine
 	TableOptionCharset
 	TableOptionCollate
+	TableOptionAutoIdCache
 	TableOptionAutoIncrement
 	TableOptionComment
 	TableOptionAvgRowLength
@@ -1385,6 +1386,10 @@ func (n *TableOption) Restore(ctx *RestoreCtx) error {
 		ctx.WriteKeyWord("AUTO_INCREMENT ")
 		ctx.WritePlain("= ")
 		ctx.WritePlainf("%d", n.UintValue)
+	case TableOptionAutoIdCache:
+		ctx.WriteKeyWord("AUTO_ID_CACHE ")
+		ctx.WritePlain("= ")
+		ctx.WritePlainf("%d", n.UintValue)
 	case TableOptionComment:
 		ctx.WriteKeyWord("COMMENT ")
 		ctx.WritePlain("= ")

misc.go

@@ -148,6 +148,7 @@ var tokenMap = map[string]int{
 	"AS":                       as,
 	"ASC":                      asc,
 	"ASCII":                    ascii,
+	"AUTO_ID_CACHE":            autoIdCache,
 	"AUTO_INCREMENT":           autoIncrement,
 	"AVG":                      avg,
 	"AVG_ROW_LENGTH":           avgRowLength,

model/ddl.go

@@ -58,6 +58,7 @@ const (
 	ActionModifySchemaCharsetAndCollate ActionType = 26
 	ActionAddPrimaryKey                 ActionType = 32
 	ActionDropPrimaryKey                ActionType = 33
+	ActionModifyTableAutoIdCache        ActionType = 34
 )
 
 const (
@@ -95,6 +96,7 @@ var actionMap = map[ActionType]string{
 	ActionModifySchemaCharsetAndCollate: "modify schema charset and collate",
 	ActionAddPrimaryKey:                 AddPrimaryKeyStr,
 	ActionDropPrimaryKey:                "drop primary key",
+	ActionModifyTableAutoIdCache:        "modify auto id cache",
 }
 
 // String return current ddl action in string

model/model.go

@@ -203,6 +203,7 @@ type TableInfo struct {
 	PKIsHandle  bool          `json:"pk_is_handle"`
 	Comment     string        `json:"comment"`
 	AutoIncID   int64         `json:"auto_inc_id"`
+	AutoIdCache int64         `json:"auto_id_cache"`
 	MaxColumnID int64         `json:"max_col_id"`
 	MaxIndexID  int64         `json:"max_idx_id"`
 	// UpdateTS is used to record the timestamp of updating the table's schema information.