如何将存储过程的输出存储到磁盘上

Question

我们正在使用SQL Server 2005. 我想创建存储过程的输出文件。

Answer 1

如果你正在使用MySQL，你可能需要从以下几点入手：

DELIMITER $$ 

CREATE PROCEDURE export_dynamic(IN file_path char(64)) 
BEGIN 
    SET @sql = CONCAT('SELECT * INTO OUTFILE ', 
         "'", file_path, "'", ' FROM Table1'); 

    PREPARE stmt1 FROM @sql; 
    EXECUTE stmt1; 
    DEALLOCATE PREPARE stmt1; 
END $$ 

DELIMITER ; 

从借来的：MySQL Forums :: General :: SELECT .. INTO OUTFILE not possible with stored procedure parameters?

如果你想硬编码的文件名在存储过程中，则没有必要使用事先准备好的声明：

DELIMITER $$ 

CREATE PROCEDURE export_static() 
BEGIN 
    SELECT * INTO OUTFILE '/tmp/file_name.txt' FROM Table1; 
END $$ 

DELIMITER ; 

如果你得到一个Can't create/write to file错误，请务必检查以下参考：MySQL 5.1 Reference Manual :: Can't create/write to file。