是否可以在条件内指定sql select查询

Question

我有如下查询：

mssql_query("SELECT COUNT(*) FROM PRTL_PasswordSecurityQuestions where isPublished = 1 ")

当count大于3时，我需要显示一些内容。为此我已经把这样的语句放了。

if(mssql_query("SELECT COUNT(*) FROM PRTL_PasswordSecurityQuestions where isPublished = 1 ")>=3)
{......}

这是检查的正确方法。不管它不适合我。

Answer 1

您无法在if条件中直接比较它：

if(mssql_query("SELECT COUNT(*) FROM PRTL_PasswordSecurityQuestions where isPublished = 1 ")>=3)
{......}

由于它返回结果集，您需要先获取它，在获取计数并存储之后，然后进行比较：

$query = mssql_query("SELECT COUNT(*) AS total FROM PRTL_PasswordSecurityQuestions WHERE isPublished = 1";
$row = mssql_fetch_assoc($query); // fetch it first

if($row['total'] > 3) {
    // do what you have to do
}