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

我有两张桌子。当用户单击一个按钮时，它会将数据从表1复制到表2中，而表2中不存在数据

我让查询工作得很好，直到我在第一个名为site的表中添加了一个新列——该列要么设置为yes，要么设置为NULL

这是我尝试过的问题。它不再向表2中插入任何数据

$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'";

我也尝试过将移动到现场的位置！='是的，在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)";

如上所述，如果没有现场查询，此查询工作正常！='是的

我想这只是我忽略了一些小的语法错误。任何帮助都将不胜感激

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) 
;

检查以下示例，当您说“不等于”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)

检查以下示例，当您说“不等于”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)

---

可能存在隐藏字符，或者值不是“是”，或者您也应该检查NOTNULL

$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 trim(lower(onsite) )!= 'yes';

---

可能存在隐藏字符，或者值不是“是”，或者您也应该检查NOTNULL

$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 trim(lower(onsite) )!= 'yes';

！=当任一值为NULL时返回NULL。你有两个选择：

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 is null;

或者，使用空安全等式：

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
      (NOT onsite <=> 'yes');

！=当任一值为NULL时返回NULL。你有两个选择：

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 is null;

或者，使用空安全等式：

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
      (NOT onsite <=> 'yes');

---

我也没有意识到这一点。我需要使用is null而不是is not null。但这肯定是正在发生的事情。如果你想把它改为非空，我会接受你的回答。谢谢，所以木奇也不知道。我需要使用is null而不是is not null。但这肯定是正在发生的事情。如果你想把它改为非空，我会接受你的回答。非常感谢您现场不为空是多余的。如果现场为null，则紧靠该谓词之前的谓词将无法计算为TRUE。现场为非null是冗余的。如果现场为null，则紧靠该谓词之前的谓词无法计算为TRUE。我怀疑问题在于现场中的null值。这只是猜测，因为我们没有看到任何示例数据或预期输出。我们确实知道这一点当现场为空时，“是”比较将返回空。如果要包括现场为空的行，则需要以不同的方式写入条件。举一个例子，不是现场的“是”，而是有其他模式会返回相同的结果。我怀疑问题是现场的空值。这只是猜测，因为我们没有看到任何示例数据或预期输出。我们确实知道这一点当现场为空时，“是”比较将返回空。如果要包括现场为空的行，则需要以不同的方式写入条件。仅举一个例子，不是现场的“是”，但还有其他模式将返回相同的结果。