Question

我正在尝试为以下内容编写查询...

SELECT SQL_CALC_FOUND_ROWS * FROM calls 
WHERE id IS NOT NULL
AND account_name LIKE '%$account_search%'
AND name LIKE '%$adv_term_det%' OR description LIKE '%$adv_term_det%'
AND type != 'online'
AND marked_completed_by = ''
ORDER BY $sort_by DESC LIMIT $page_position, $item_per_page

但结果并非预期值。我怀疑引起问题的那条线是..

AND name LIKE '%$adv_term_det%' OR description LIKE '%$adv_term_det%'

我怀疑它应该是一个子查询，但经过多次尝试使用IN后，我还没有能够使它工作。

SELECT SQL_CALC_FOUND_ROWS * FROM calls 
WHERE call_ref IN
  (SELECT call_ref FROM calls
   WHERE name LIKE '%$adv_term_det%' OR description LIKE '%$adv_term_det%'
  )
AND id IS NOT NULL
AND account_name LIKE '%$account_search%'
AND type != 'online'
AND marked_completed_by = ''
ORDER BY $sort_by DESC LIMIT $page_position, $item_per_page;

基本上我想要返回符合所有其他条件的所有记录，并且$adv_term_det或name中都有description。

如果我只使用AND name LIKE '%$adv_term_det%'，我会得到我对该查询所期望的结果，同样如果我只使用AND description LIKE '%$adv_term_det%'，但我需要找到包含%$adv_term_det%'的记录name或description

Answer 1

要么您对复杂的布尔逻辑不是很熟悉，要么就是错过了错误。在任何一种情况下，我都建议您使用括号，特别是在混合AND和OR时。我认为这是你想要的逻辑：

WHERE (id IS NOT NULL) AND
      (account_name LIKE '%$account_search%') AND
      (name LIKE '%$adv_term_det%' OR description LIKE '%$adv_term_det%') AND
      (type <> 'online') AND
      (marked_completed_by = '')

另请注意，将变量直接插入SQL字符串是危险的。您应该为此目的使用参数。

MySQL多参数查询

1 个答案: