feat: message notify

server/internal/db/dbm/dbi/column.go

@@ -226,9 +226,10 @@ var (
 		SQLValue: SQLValueNumeric,
 	}
 
+	// 使用string进行转换，避免长度过长导致精度丢失等
 	DTNumeric = &DataType{
 		Name:     "numeric",
-		Valuer:   ValuerFloat64,
+		Valuer:   ValuerString,
 		SQLValue: SQLValueNumeric,
 	}
 

server/internal/db/dbm/mysql/transfer.go

@@ -97,6 +97,7 @@ func (c *commonTypeConverter) Blob(col *dbi.Column) *dbi.DbDataType {
 	return Blob
 }
 func (c *commonTypeConverter) Longblob(col *dbi.Column) *dbi.DbDataType {
+	col.CharMaxLength = 0
 	return Longblob
 }