Question

我终于准备好了我的查询插入代码，但现在我在运行整个查询时遇到错误。我相信它与drop table功能有关。我最初让它们内联然后读取我应该删除它并在查询的开头添加如下：

    $query = $this->db->query("DROP TABLE IF EXISTS resultx;");
    $query = $this->db->query("DROP TABLE IF EXISTS resulty;");

$query = $this->db->query("
 CREATE TEMPORARY TABLE resultx AS
 select *, CONCAT(Credit,'_',OrderStat) as consol from (..........

我正在创建两个临时表，然后在最后一个查询中加入它们。我不确定如何将第二个DROP临时表放回完整查询中，或者这是否是正确的方法。我得到的错误是：

A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; 
check the manual that corresponds to your MySQL server version for the right syntax to use 
near 'CREATE TEMPORARY TABLE resulty AS select packetDeet,Sales,SaleDate, UserID,Lead' at line 15

查询：

CREATE TEMPORARY TABLE resultx AS 
    select 
        *,
        CONCAT(Credit,'_',OrderStat) as consol 
    FROM 
        ( select 
              packetDetailsId, GROUP_CONCAT(Credit) AS Credit,
              GROUP_CONCAT(AccountNum) AS AccountNum,
              GROUP_CONCAT(OrderStat) AS OrderStat 
          FROM 
             ( SELECT 
                   pd_extrafields.packetDetailsId, 
                   CASE WHEN 
                       pd_extrafields.ex_title LIKE ('%Credit%') 
                       THEN pd_extrafields.ex_value 
                       ELSE NULL 
                   END as Credit, 
                  CASE WHEN 
                       pd_extrafields.ex_title LIKE ('%Account%') 
                       THEN pd_extrafields.ex_value 
                       ELSE NULL 
                  END as AccountNum, 
                 CASE WHEN 
                       pd_extrafields.ex_title LIKE ('%Existing%') 
                       THEN pd_extrafields.ex_value 
                       ELSE NULL 
                 END as OrderStat 
               FROM pd_extrafields 
             ) AS myalias 
          GROUP BY packetDetailsId 
        )as TempTab; 
CREATE TEMPORARY TABLE resulty AS select packetDeet,Sales,SaleDate, .........

请告诉我这是否有意义，或者我需要更新问题并提供更多信息。

Answer 1

如果您尝试在对$this->db->query()的一次调用中执行两个查询，则问题可能是您的数据库库不允许多个查询。

要查看是否存在问题，您应该将它们分成两个单独的查询。

mysql-php，创建临时表时出错

1 个答案: