php - 如果列位于另一列中，MYSQL 显示结果就像

Question

我正在尝试让 MYSQL 查询仅显示与 2 个 WHERE 语句匹配的行。

例如

$result=mysql_query("
  SELECT *
  FROM tablename
  WHERE
    (column1 IN $phpimplodestring1) OR
    (column2 LIKE $phpimplodestring2)
  GROUP BY column2
  ORDER BY id /* another column */
  DESC LIMIT 5
")

到目前为止，我搜索的所有内容都不起作用，经过几周的测试，没有结果。 我尝试过使用mysqli，但在使用它时它似乎根本不起作用。

预先感谢您的帮助! :)

Answer 1

您的问题不是 WHERE 子句。 注意你的聚合，你按column2分组但在选择中声明*。 select 子句必须与聚合子句匹配，并且您甚至没有声明聚合函数。

下面的示例可以工作(取决于您想要什么)

SELECT column2, count(*) as QTD
  FROM tablename
  WHERE
    (column1 IN $phpimplodestring1) OR
    (column2 LIKE $phpimplodestring2)
  GROUP BY column2
  ORDER BY id /* another column */
  DESC LIMIT 5


SELECT *
  FROM tablename
  WHERE
    (column1 IN $phpimplodestring1) OR
    (column2 LIKE $phpimplodestring2)
  ORDER BY id /* another column */
  DESC LIMIT 5


SELECT column2, sum(anotherColumn)
  FROM tablename
  WHERE
    (column1 IN $phpimplodestring1) OR
    (column2 LIKE $phpimplodestring2)
  GROUP BY column2
  ORDER BY id /* another column */
  DESC LIMIT 5


SELECT distinct *
  FROM tablename
  WHERE
    (column1 IN $phpimplodestring1) OR
    (column2 LIKE $phpimplodestring2)
  ORDER BY id /* another column */
  DESC LIMIT 5

等等...