Question

我有以下sql：

tbl_items  
title extra_fields  
Prod1 [{"id":"2","value":"1"},{"id":"3","value":"1"},{"id":"4","value":"2"}]  
Prod2 [{"id":"2","value":"1"},{"id":"3","value":"2"},{"id":"4","value":"1"}]  
Prod3 [{"id":"2","value":"2"},{"id":"3","value":"2"},{"id":"4","value":"1"}]  
Prod4 [{"id":"2","value":"2"},{"id":"3","value":"1"},{"id":"4","value":"1"}]  
Prod5 [{"id":"2","value":"2"},{"id":"3","value":"1"}]  
Prod6 [{"id":"2","value":"1"},{"id":"3","value":"1"}]  
Prod7 [{"id":"2","value":"1"},{"id":"3","value":"1"},{"id":"4","value":"1"}]  
Prod8 [{"id":"2","value":"1"},{"id":"3","value":"1"}]

现在，我想选择包含值{"id":"2","value":"2"};的所有产品我正在使用joomla cms .. 我尝试了以下声明：

$db->setQuery('SELECT * FROM tbl_items WHERE extra_fields LIKE "%{"id":"2","value":"2"}%"');
$xFields = $db->loadObjectList();

但它对我不起作用，任何人都可以帮忙吗？

Answer 1

您的搜索字符串是双引号：

"%{"id":"2","value":"2"}%"

我不知道你怎么逃避它，但它需要导致：

'%{"id":"2","value":"2"}%'

以下内容可能有效：

$query = "
  SELECT * 
    FROM ".$db->nameQuote('tbl_items')."  
    WHERE ".$db->nameQuote('extra_fields')." LIKE ".$db->quote('%{"id":"2","value":"2"}%').";
  ";
$db->setQuery($query);

SQL从表中加载额外的字段

1 个答案: