!126 feat: 解析达梦特殊字段

* feat: 解析达梦特殊字段

server/internal/db/dbm/postgres/dialect.go

@@ -282,11 +282,11 @@ func (pd *PgsqlDialect) UpdateSequence(tableName string, columns []dbi.Column) {
 }
 
 func (pd *PgsqlDialect) GetDataHelper() dbi.DataHelper {
-	return new(DataHelper)
+	return dataHelper
 }
 
 func (pd *PgsqlDialect) GetColumnHelper() dbi.ColumnHelper {
-	return new(ColumnHelper)
+	return columnHelper
 }
 
 func (pd *PgsqlDialect) GetDumpHelper() dbi.DumpHelper {

server/internal/db/dbm/postgres/helper.go

@@ -73,8 +73,14 @@ var (
 		dbi.CommonTypeEnum:       "varchar(2000)",
 		dbi.CommonTypeJSON:       "varchar(2000)",
 	}
+	dataHelper   = &DataHelper{}
+	columnHelper = &ColumnHelper{}
 )
 
+func GetDataHelper() *DataHelper {
+	return dataHelper
+}
+
 type DataHelper struct {
 }