使用过程和事件写入 OUTFILE - MySQL

Question

有人可以帮我解决下面的问题吗？

DELIMITER $$
CREATE DEFINER=`user1`@`localhost` PROCEDURE `Local_sp_ExtractPOI`()
BEGIN

SET SESSION group_concat_max_len = 1000000;

SET @OutputPath := 'C:/stuff/folder/nextfolder/files/POIExtract/';
SET @filename := date_format(now(), '%d%m%y_%H%m%s.txt');
SET @fullOutputPath := CONCAT(@OutputPath, @filename);

set @q1 := concat("SELECT group_concat(`NHS` separator '') INTO OUTFILE ",@fullOutputPath,
" FIELDS TERMINATED BY ',' 
OPTIONALLY ENCLOSED BY '\'
FROM person WHERE `active` = -1 AND `NHS` IS NOT NULL AND `NHS` REGEXP [0123456789]{10} 
ORDER BY 1");

prepare s1 from @q1;
execute s1; deallocate prepare s1;

END$$
DELIMITER ;

我知道我可以写入路径，因为这有效：

SELECT oid INTO OUTFILE "C:/stuff/folder/nextfolder/files/POIExtract/varmydata.txt"
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\'
LINES TERMINATED BY '\n'
FROM person limit 1;

但是，当我包装一个过程并使用变量和 concat() 时，它不会创建输出文件。

我尝试了多种格式化文件路径的方法，但还是不行。当我尝试调用它时，出现错误代码：1064。您的 SQL 语法有误...

我不理解这种使用 REGEXP 的方式吗？

我打算使用预定事件调用它。

蒂亚，

麦克

Answer 1

秋名是对的。修改为：

set @q1 := concat("SELECT group_concat(`NHS` separator '') INTO OUTFILE ", " '", @fullOutputPath, "' ", " FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\' FROM p_person WHERE `active` = -1 AND `NHS` IS NOT NULL AND `NHS` REGEXP", " '[0123456789]{10}' ", "ORDER BY 1");

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