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1、准备工作

查看数据库：

show databases;

切换数据库：

use 数据库名;

查看表名字

show tables;

2、单个表导出

需要替换导出csv文件目录和表名

SELECT *
INTO OUTFILE '目录/文件名.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
FROM 表名;

如果表太大，excel无法打开，可以显示导出的行数，例如10000行

SELECT *
INTO OUTFILE '目录/文件名.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
FROM 表名
LIMIT 10000;

3、导出全部表

当表太多的时候，可以使用下面的方法，一次性导出全部表；
需要替换数据库名。

DELIMITER //CREATE PROCEDURE ExportAllTablesToCSV()
BEGINDECLARE done INT DEFAULT FALSE;DECLARE tName VARCHAR(255);DECLARE tCursor CURSOR FOR SELECT table_name FROM information_schema.tables WHERE table_schema = '数据库名';DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;OPEN tCursor;read_loop: LOOPFETCH tCursor INTO tName;IF done THENLEAVE read_loop;END IF;SET @stmt = CONCAT('SELECT * FROM ', tName, ' INTO OUTFILE \'', tName, '.csv\' FIELDS TERMINATED BY \',\' OPTIONALLY ENCLOSED BY \'"\' LINES TERMINATED BY \'\n\'');PREPARE s1 FROM @stmt;EXECUTE s1;DEALLOCATE PREPARE s1;END LOOP;CLOSE tCursor;
END //DELIMITER ;CALL ExportAllTablesToCSV();

4、修复

如果在导出时，报错：

Table '表名' is marked as crashed and should be repaired

检查表：

check table 表名;

修复表：

repair table 表名;