mysql - 如何在mysql中执行String然后插入临时表？

Question

我想将动态查询的结果插入临时表或将此结果用作表的方法。例如 ：

declare str varchar(2000);
set @str="select 
       from
        `cdr` ";
 PREPARE stmt1 FROM @str;
  EXECUTE stmt1;

现在我想执行这样的查询

 select * from stmt1;

Answer 1

编辑：试试下面的代码：

DECLARE str VARCHAR(2000);
SET @str="CREATE TEMPORARY TABLE tempTable1 select * from `cdr` ";
PREPARE stmt1 FROM @str;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1;

SELECT * FROM tempTable1;
-- Code what you want to work on temptable1 
DROP TABLE tempTable1;

原始答案：首先创建临时表，然后使用以下代码：

DECLARE str VARCHAR(2000);
SET @str="insert into tempTable select * from `cdr` ";
PREPARE stmt1 FROM @str;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1;

然后你可以像这样执行查询：

SELECT * FROM tempTable;