Question

如何使用LIKE运算符进行字符串搜索，字符串将作为另一个select语句的输出？

SELECT CONCAT('"id":"',transactions.Id,'"')  AS id
FROM transactions.transactions LEFT JOIN
report.PlayerTransaction
ON (transactions.Id=PlayerTransaction.TranId )
WHERE TranId IS  NULL AND  transactions.created_at > '2017-10-15' ;

SELECT *
FROM report.EtlServiceErrorLog 
WHERE Topic = 'player' and  ErrorSourceData like  xxxx and
CreatedDate > '2017-10-15' ;

考虑这两个问题;我希望查询写成：

SELECT *
FROM report.EtlServiceErrorLog 
WHERE Topic = 'player' and
      ErrorSourceData like in (SELECT CONCAT('"id":"', transactions.Id, '"')  AS id
                               FROM transactions.transactions LEFT JOIN
                                    report.PlayerTransaction
                                    ON (transactions.Id = PlayerTransaction.TranId ) WHERE TranId IS  NULL AND  transactions.created_at > '2017-10-15'
                             ;) and
      CreatedDate > '2017-10-15' ;

或者我必须得到循环的帮助吗？请给我举个例子。

Answer 1

看来你真的想找

ErrorSourceData LIKE CONCAT('%"id":"', t.Id, '"%')

使用IN无法做到这一点。您需要EXISTS。

SELECT *
FROM report.EtlServiceErrorLog sel
WHERE Topic = 'player' 
AND EXISTS
(
  SELECT *
  FROM transactions.transactions t
  WHERE t.id NOT IN (SELECT pt.TranId FROM report.PlayerTransaction pt)
  AND t.created_at > '2017-10-15'
  AND sel.ErrorSourceData LIKE CONCAT('%"id":"', t.Id, '"%')
)
AND CreatedDate > '2017-10-15' ;

Answer 2

如果子查询只返回1行，它将起作用。

Answer 3

如果你不使用LIKE运营商＆＃39;％＆＃39; _改为IN ErrorSourceData in（SELECT CONCAT（＆＃39;＆＃34; id＆＃34;：＆＃34;＆＃39;，transactions.Id，＆＃39;＆＃34;＆＃39;）

我们可以使用select运算符作为输入吗？

3 个答案: