mysql匯出資料

直接匯出某庫全表（包括表設計和表資料）為sql語句

mysqldump -h172.16.*.*  -uroot  -p  somedatabase  sometable > somewhere/table.sql

可以通過sql自行過濾某些資料

mysql -h172.16.*.* -uroot -p -e sql database  > somewhere/table.sql(.txt, .xls)

mysql -h172.16.*.* -uroot -p -e "select user_id, mail from sometable.t_user where mail is
notnull
and mail != ''
" somedatabase > somewhere/table.xls

mysql -h172.16.*.* -uroot -p -e "select concat('insert into info(user_id, mail) values(',user_id,',\'',mail, '\');') from sometable where mail is

notnull
" somedatabase > somewhere/table.sql

返回結果為連線引數產生的字串，如果有任何乙個引數為null，則返回值為null。

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