一、導出到csv(本地導出)
通過mysql客戶端shell連接到服務器,選擇使用的數據庫,輸入sql代碼:
select * from test_info
into outfile '/tmp/test.csv'
fields terminated by ',' ------字段間以,號分隔
optionally enclosed by '"' ------字段用"號括起
escaped by '"' ------字段中使用的轉義符為"
lines terminated by '\r\n'; ------行以\r\n結束
上面的 導出文件夾 需要手動創建,否則會報錯:ERROR 1 (HY000): Can't create/write to file '\tmp\DKX.csv' (Errcode: 2)
select * from test_info into outfile '/tmp/test.csv' fields terminated by ',' optionally enclosed by '"' escaped by '"' lines terminated by '\r\n';
注意:
where gscode = 'BS監控' 有中文,導不出數據。
解決方法:
where gscode like 'BS%'
二、csv文件導入
load data infile '/tmp/test.csv'
into table test_info
fields terminated by ','
optionally enclosed by '"'
escaped by '"'
lines terminated by '\r\n';
#insert
load data infile '/tmp/test.csv' into table test_info fields terminated by ',' optionally enclosed by '"' escaped by '"' lines terminated by '\r\n';
#replace
load data infile '/tmp/test.csv' repalce into table test_info fields terminated by ',' optionally enclosed by '"' escaped by '"' lines terminated by '\r\n';
場景:表1中的數據需要導入表2(表1、2結構相同,都有自增id字段)。表1中的自增id字段不要導出,讓其在數據導入表2時自動生成,避免可能出現重復的自增id。
導出:
導入:
注意:
如果是遠程連接的數據庫,導出、導入時可能報錯:ERROR 1045 (28000): Access denied for user 'quantuser'@'%' (using password: YES)
解決方法:
導出:(-N 不導出標題行)
mysql -h host -u user --password=pwd dbname -N -e "select * from table" > D:/tmp/test.csv
導入:
登錄,連接上數據庫之后
用 load data local infile 'XXX.csv' (如果指定LOCAL關鍵詞,從客戶主機讀文件。如果LOCAL沒指定,文件必須位於服務器上。(LOCAL在MySQL3.22.6或以后版本中可用。))
三、把從mongodb 中導出的csv文件,導入到 mysql
導出:
導入mysql:
效果:
注意:
導入、導出的兩個mysql 的數據庫屬性要一致,否則導入數據之后,中文字段是亂碼的。