mysql匯出預設位址 mysql匯出匯入資料

使用sql語句匯出資料：

匯出時如果不寫絕對路徑，會提示the mysql server is running with the --secure-file-priv option so it cannot execute this statement。

使用 show variables like "%secure%" 檢視secure_file_priv 設定的路徑，匯出時必須是這個路徑才能匯出，預設null的話是禁止匯出的。

匯出命令：select id,分數 from score into outfile "/var/lib/mysql-files/score.txt"; (id，分數是列名，score是表名)

加上逗號分隔和引號：select id,分數 from score into outfile "/var/lib/mysql-files/score1.txt" fields terminated by "," enclosed by '"';

使用mysqldump匯出檔案：mysqldump -t ./ schooldb score --fields-terminated-by ',' --fields-optionally-enclosed-by '"';

mysql匯出：

mysql -uroot -p*** --vertical --execute=' select id from score ;' schooldb > /var/lib/mysql-files/score.txt

[root@hkdlvm00 mysql-files]# cat score.txt

*************************** 1. row ***************************

id: 1

*************************** 2. row ***************************

id: 2

*************************** 3. row ***************************

id: 3

匯出時，去掉*****注釋：mysql -uroot -p*** --execute=' select id from score ;' schooldb > /var/lib/mysql-files/score.txt

id匯入資料：load data infile '/var/lib/mysql-files/score.txt' into table score ignore 1 lines (班級);

load data infile '/var/lib/mysql-files/score.txt' into table score ignore 1 lines (班級) set 分數=77; (設定分數欄的所有預設值為77)