在php錯誤中更新限制語句

Question

$query1 = "update rooms set available='1' where typeId='$typeId' order by roomId limit='$room'"; 

我在'='1''附近獲得語法錯誤，但找不到錯誤。我很確定它的寫法是正確的。

Answer 1

LIMIT無法賦值，刪除引號。將其更改爲：

$query1 = "update rooms set available='1' where typeId='$typeId' order by roomId limit $room"; 

Answer 2

只需查詢改成這樣：

$query1 = "update `rooms` set available='1' where typeId='$typeId' order by roomId limit '$room'"; 

Answer 3

在SQL限制不能分配和周圍數量限制，你不能使用引號所以用這個

$query1 = "update rooms set available = '1' where typeId = '$typeId' order by roomId limit $room "; 

不要使用'$room'