MySQL在其他查询中使用prepare语句结果

Question

我想使用prepare语句结果来填充我的临时表。可能吗？ （如果我尝试在存储过程中执行此操作。）

我想这样的事情：

SET @table_name = 'my_table';
SET @query = CONCAT('SELECT * FROM ', @table_name);
PREPARE statement FROM @query;
INSERT INTO tmp_table FROM statement;
DEALLOCATE PREPARE statement;

Answer 1

首先创建临时表

SET @table_name = 'my_table';
SET @query = CONCAT('CREATE TEMPORARY TABLE tmp_table AS SELECT * FROM ', @table_name);
PREPARE statement FROM @query;
EXECUTE statement ;
DEALLOCATE PREPARE statement;