判断A字段是否包含某个值的方法

  SELECT COUNT(1)
  FROM DH_T_REPORT_CONDITION D
 WHERE D.CONDITION_MD5 = '0E29E123721F1475A21DC0984065C831';
 如果CONDITION_MD5 存在值为“0E29E123721F1475A21DC0984065C831”返回该值的个数。