mysql - 使用当天的mysql创建CSV文件

Question

如何将数据从 mysql 导出到包含日期和时间的文件 csv。我尝试了这段代码，但出现错误

SELECT *
FROM order
INTO OUTFILE '/tmp/',NOW(),'_orders.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n';

这里是我的错误

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 '"' ,NOW(), '"'_orders.csv' FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TER' at line 3

这是我的事件工作很棒，但我希望每个月底都有不同的简历

CREATE DEFINER = `admin`@`localhost` EVENT `Order` 
ON SCHEDULE EVERY1 MONTH STARTS '2018-12-01 00:00:00' 
ON COMPLETION NOT PRESERVE ENABLE 
COMMENT 'Order save' 
DO SELECT *
FROM Order
INTO OUTFILE '/tmp/_orders.csv'

这里查询获取名称和日期，但我不能在事件中添加这个

SET @`outfull` := CONCAT('/tmp/', NOW(), 'orders.csv');
SET @`qry` := CONCAT('SELECT * 
                        INTO OUTFILE \'', @`outfull`, '\' 
                        FIELDS TERMINATED BY \';\' 
                        ENCLOSED BY \'"\' 
                        LINES TERMINATED BY \'\n\' 
                      FROM `order`');

PREPARE `stmt` FROM @`qry`;
SET @`qry` := NULL;
EXECUTE `stmt`;
DEALLOCATE PREPARE `stmt`;

Answer 1

尝试准备好的语句:

set @sql = concat('SELECT *
FROM tradooITLangues 
INTO OUTFILE ', concat('\'', '/tmp/', NOW(), '_orders.csv', '\''),
' FIELDS TERMINATED BY \',\'
ENCLOSED BY \'"\'
LINES TERMINATED BY \'#\n\';');

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

在一个事件中(我的 MySQL 接受了语法):

delimiter $$
CREATE DEFINER = `admin`@`localhost` EVENT `Order` 
ON SCHEDULE EVERY 1 MONTH STARTS '2018-12-01 00:00:00' 
ON COMPLETION NOT PRESERVE ENABLE 
COMMENT 'Order save' 
DO
BEGIN

    SET @`outfull` := CONCAT('/tmp/', NOW(), 'orders.csv');
    SET @`qry` := CONCAT('SELECT * 
                            INTO OUTFILE \'', @`outfull`, '\' 
                            FIELDS TERMINATED BY \';\' 
                            ENCLOSED BY \'"\' 
                            LINES TERMINATED BY \'\n\' 
                          FROM `order`');

    PREPARE `stmt` FROM @`qry`;
    SET @`qry` := NULL;
    EXECUTE `stmt`;
    DEALLOCATE PREPARE `stmt`;

END;
$$