NOW Function is not working in my query

Question

My NOW Function is not working the way I want it to. I just want to simply find dates that are past todays date.

Here is my query.

SELECT * 
FROM   `trade_show_inventory` 
       LEFT JOIN `trade_show_reserved` 
              ON `trade_show_inventory`.`id` = `trade_show_reserved`.`productid` 
WHERE  `trade_show_inventory`.`quantity` > 0 
        OR `trade_show_reserved`.`datereserved` 
           + INTERVAL 5 day <= '2013-03-31' 
           AND `trade_show_reserved`.`datereserved` > Now()

EDIT:

I changed my query to this and it still is not working. Still working away at it..

    $date = date('Y-m-d');
    $sql = "SELECT * FROM `trade_show_inventory` LEFT JOIN `trade_show_reserved`
    ON `trade_show_inventory`.`ID` = `trade_show_reserved`.`ProductID`
    WHERE (`trade_show_inventory`.`Quantity` > 0)
    or (`trade_show_reserved`.`DateReserved` + INTERVAL 5 DAY <= '$setupStart' and
           `trade_show_reserved`.`DateReserved` > '2013-03-25')";

Answer 1

Well, your where clause is parsing like:

WHERE (`trade_show_inventory`.`Quantity` > 0) or
      (`trade_show_reserved`.`DateReserved` + INTERVAL 5 DAY <= '2013-03-25' and
       `trade_show_reserved`.`DateReserved` > NOW()
      )

If the date is five days before 2013-03-25, then it can't be in the future (as of today at least).

Put parentheses around the where clauses to get the logic you intend.

Answer 2

NOW() doesn't return a date... it's a complete timestamp:

mysql> select NOW();
+---------------------+
| NOW()               |
+---------------------+
| 2013-03-25 17:20:06 |
+---------------------+
1 row in set (0.00 sec)

Try wrapping the DATE function around it:

mysql> select DATE(NOW());
+-------------+
| DATE(NOW()) |
+-------------+
| 2013-03-25  |
+-------------+
1 row in set (0.00 sec)

Answer 3

NOW() returns the current date & time.

You would perhaps want to use DATE() as it returns the date without time.

Answer 4

NOW（）函数使用时间戳，我认为您应该首先将其转换为所需的日期格式。