plsql - 在 WHERE 子句 SQL 查询 REGEXP_LIKE Oracle 11g 中检查多个值

Question

如果在复杂查询中使用 REGEXP_LIKE 需要很长时间才能执行，您能否为此提供替代解决方案。

从一个查询中获取值列表，并且应该仅将这些值用于另一个查询 where 子句

LV_TRANS_TYPES_IDS  VARCHAR2(4000);


  SELECT LISTAGG(TRANSACTION_TYPE_ID, '|') WITHIN GROUP(ORDER BY 1)
    INTO LV_TRANS_TYPES_IDS
    FROM MTL_TRANSACTION_TYPES
   WHERE TRANSACTION_TYPE_NAME IN
         (SELECT MEANING
            FROM FND_LOOKUP_VALUES_VL
           WHERE LOOKUP_TYPE = 'LOOKUPNAME');

-- 它将返回多个值，例如 2|38|45|60

 LV_TRANS_TYPES_IDS := '^(' || LV_TRANS_TYPES_IDS || ')$';

-- 赋值 ^(2|38|45|60)$ 将此值传递给下面的查询

 SELECT COUNT(*)
    INTO LN
    FROM MTL_TRANSACTION_TYPES
   WHERE 1 = 1
     AND REGEXP_LIKE(TRANSACTION_TYPE_ID, LV_TRANS_TYPES_IDS);

首先执行查询获取输出并将这些输出用于第二、第三个查询输入。like (select f1,f2 from table1 where REGEXP_LIKE(TRANSACTION_TYPE_ID, LV_TRANS_TYPES_IDS) union all union all select f1,f2 from table3 where REGEXP_LIKE(TRANSACTION_TYPE_ID, LV_TRANS_TYPES_IDS))

Answer 1

如果您想更快地获得结果，请不要使用LISTAGGand REGEXP_LIKE。

只是：

SELECT COUNT(*)
INTO LN
FROM MTL_TRANSACTION_TYPES
WHERE TRANSACTION_TYPE_NAME IN
         (SELECT MEANING
            FROM FND_LOOKUP_VALUES_VL
           WHERE LOOKUP_TYPE = 'LOOKUPNAME');

Answer 2

SELECT COUNT(*)
INTO LN
FROM MTL_TRANSACTION_TYPES mtt
JOIN
FND_LOOKUP_VALUES_VL flvv
ON mtt.TRANSACTION_TYPE_NAME = flvv.MEANING
AND flvv.LOOKUP_TYPE = 'LOOKUPNAME';