将PHP变量添加到LIMIT后，MSSQL查询不起作用

Question

This is a query that I have used successfully in a MySQL environment before. When I try it using MSSQL. It errors out on this statement:

$result = mssql_query("SELECT * FROM DriverAppInfo ORDER BY appdate LIMIT $startrow, 20") 

$startrow is defined by the following:

if (!isset($_GET['startrow']) or !is_numeric($_GET['startrow'])) {
  $startrow = 0;
} 
else {
  $startrow = (int)$_GET['startrow'];
}   

Does $startrow in the query need to be surrounded by single quotes? Thank you in advance

Answer 1

The limit keyword translates to top in MSSQL / Sql Server land.

You'll need to abstract that depending on MySQL / MSSQL. Remember:

PDO does not provide a database abstraction; it doesn't rewrite SQL or emulate missing features. You should use a full-blown abstraction layer if you need that facility.

Also I'll mention that with MSSQL depending on version limit, offset might not be supported. Take a look at this for MSSQL pagination approaches.

Answer 2

1) check mssql_get_last_message()

2) show final SQL, use somethin like:

$sql = "SELECT * FROM DriverAppInfo ORDER BY appdate LIMIT $startrow, 20";
$result = mssql_query($sql);

echo $sql;