php - 将数据从一个表复制到另一个表但添加第二个 WHERE 子句不会插入数据

Question

我有两张 table 。当用户单击一个按钮时，它会将表 1 中的数据复制到表 2 中，而表 2 中尚不存在该数据。

我的查询运行得很好，直到我在第一个名为“onsite”的表中添加了一个新列——要么设置为 yes，要么为 NULL。

这是我试过的查询。它不再向 past_bidder 表(表 2)插入任何数据

$copybidderquery = "INSERT INTO past_bidders(bidnum, bidfname, bidlname, bidphnum, bidlicense, bidaddress, bidtaxexempt, bidtaxid, date_created) 
SELECT bidnum, bidfname, bidlname, bidphnum, bidlicense, bidaddress, bidtaxexempt, bidtaxid, date_created 
FROM bidders 
WHERE (bidfname, bidlname, bidphnum, bidlicense, bidaddress) 
NOT IN (SELECT bidfname, bidlname, bidphnum, bidlicense, bidaddress FROM past_bidders) 
AND onsite != 'yes'";

我也试过将 where onsite != 'yes' 移到“WHERE”之后，它仍然做同样的事情。

$copybidderquery = "INSERT INTO past_bidders(bidnum, bidfname, bidlname, bidphnum, bidlicense, bidaddress, bidtaxexempt, bidtaxid, date_created) 
SELECT bidnum, bidfname, bidlname, bidphnum, bidlicense, bidaddress, bidtaxexempt, bidtaxid, date_created 
FROM bidders 
WHERE onsite != 'yes'
AND (bidfname, bidlname, bidphnum, bidlicense, bidaddress) 
NOT IN (SELECT bidfname, bidlname, bidphnum, bidlicense, bidaddress FROM past_bidders)";

如前所述，此查询在没有“onsite != 'yes'”行的情况下也能正常工作。

我认为这只是我忽略的一些小语​​法错误。任何帮助将不胜感激。

Answer 1

INSERT INTO past_bidders(bidnum, bidfname, bidlname, bidphnum, bidlicense, bidaddress, bidtaxexempt, bidtaxid, date_created) 
SELECT bidnum, bidfname, bidlname, bidphnum, bidlicense, bidaddress, bidtaxexempt, bidtaxid, date_created 
FROM bidders 
WHERE  onsite is NULL AND (bidfname, bidlname, bidphnum, bidlicense, bidaddress) 
NOT IN (SELECT bidfname, bidlname, bidphnum, bidlicense, bidaddress FROM past_bidders) 
;

检查下面的例子，当你说不等于某事时它不会返回空值

mysql> select * from calls;
+----+------------+---------+
| id | date       | user_id |
+----+------------+---------+
|  1 | 2016-06-22 |       1 |
|  2 | 2016-06-22 |    NULL |
|  3 | 2016-06-22 |    NULL |
|  4 | 2016-06-23 |       2 |
|  5 | 2016-06-23 |       1 |
|  6 | 2016-06-23 |       1 |
|  7 | 2016-06-23 |    NULL |
+----+------------+---------+
7 rows in set (0.00 sec)

mysql> select * from calls where user_id!=1;
+----+------------+---------+
| id | date       | user_id |
+----+------------+---------+
|  4 | 2016-06-23 |       2 |
+----+------------+---------+
1 row in set (0.00 sec)

mysql> select * from calls where user_id is null;
+----+------------+---------+
| id | date       | user_id |
+----+------------+---------+
|  2 | 2016-06-22 |    NULL |
|  3 | 2016-06-22 |    NULL |
|  7 | 2016-06-23 |    NULL |
+----+------------+---------+
3 rows in set (0.00 sec)