將mysql數據導入到redis
阿新 • • 發佈:2018-08-15
red 成功 字段 編寫 換行 數據 inter warn transfer 用腳本模擬redis的客戶端redis-cli實現:(註:mysql地址為10.86.30.203 redis地址為10.86.31.50)
1.首先確定mysql表的列:
1.首先確定mysql表的列:
desc test; +-----------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-----------+-------------+------+-----+---------+-------+ | id | int(11) | YES | | NULL | | | test1 | varchar(50) | YES | | NULL | | | test2 | varchar(64) | YES | | NULL | | | test3 | int(11) | YES | | NULL | | +-----------+-------------+------+-----+---------+-------+ 4 rows in set (0.00 sec)
2.編寫sql腳本:
vi /home/darren/test.sql SELECT CONCAT( "*8\r\n", ‘$‘, LENGTH(redis_cmd), ‘\r\n‘,redis_cmd, ‘\r\n‘,‘$‘, LENGTH(redis_key), ‘\r\n‘,redis_key, ‘\r\n‘, ‘$‘, LENGTH(hkey1), ‘\r\n‘,hkey1, ‘\r\n‘,‘$‘, LENGTH(hval1), ‘\r\n‘, hval1, ‘\r\n‘ ‘$‘, LENGTH(hkey2), ‘\r\n‘,hkey2, ‘\r\n‘,‘$‘, LENGTH(hval2), ‘\r\n‘, hval2, ‘\r\n‘ ‘$‘, LENGTH(hkey3), ‘\r\n‘,hkey3, ‘\r\n‘,‘$‘, LENGTH(hval3), ‘\r\n‘, hval3, ‘\r‘) FROM ( SELECT ‘HMSET‘ AS redis_cmd, CONCAT(‘id:‘,id) AS redis_key, ‘test1‘ AS hkey1,test1 AS hval1, ‘test2‘ AS hkey2,test2 AS hval2, ‘test3‘ AS hkey3,test3 AS hval3 FROM test ) AS t
註意:其中*8的意思是一共有8個參數,$length()為參數的長度。腳本中test1,test2,test3均為mysql的列名,可自行修改。
3.執行導入命令:
mysql -uroot -pxxx -h 10.86.30.203 test --skip-column-names --raw < /home/darren/test.sql | redis-cli --pipe ---------------------------------------------------------------------------------------------------------------- mysql: [Warning] Using a password on the command line interface can be insecure. All data transferred. Waiting for the last reply... Last reply received from server. errors: 0, replies: 1
出現以上errors為0為導入成功。
–raw: 使mysql不轉換字段值中的換行符。
–skip-column-names: 使mysql輸出的每行中不包含列名。
將mysql數據導入到redis