啥意思，驱动不匹配？

做个实验，在达梦客户端里查一下下面这个SQL，看看是否也报相同的错误

SELECT NULL AS TABLE_CAT, 
       SCHS.NAME AS TABLE_SCHEM, 
       TABS.NAME AS TABLE_NAME, 
       COLS.NAME AS COLUMN_NAME, 
       REPLACE(SF_GET_OCT_LENGTH(COLS.TYPE$,COLS.LENGTH$,COLS.SCALE),'-2','') AS CHAR_OCTET_LENGTH 
  FROM SYSOBJECTS SCHS
      ,SYSOBJECTS TABS
      ,SYSCOLUMNS COLS
 WHERE TABS.ID = COLS.ID 
   AND SCHS.ID = TABS.SCHID
   AND TABS.TYPE$ = 'SCHOBJ'
   AND TABS.SUBTYPE$ = 'UTAB'
   AND SCHS.TYPE$ = 'SCH'