mysqlimport

示例

mysqlimport -uroot -p123456 test /tmp/mytbl.txt;

約定：文件名的最后一部分為表名，以上語(yǔ)句導(dǎo)入到表mytbl

mysqlimport必須指定數(shù)據(jù)庫(kù)，以上語(yǔ)句數(shù)據(jù)庫(kù)為test

導(dǎo)入csv

mysqlimport -uroot -p --local --lines-terminated-by="\r\n" --fields-terminated-by="," --fields-enclosed-by="\"" test /tmp/mytbl.csv

load data

示例

mysql> load data infile '/tmp/mytbl.txt' into table mytbl

load data可以不指定數(shù)據(jù)庫(kù)

以上語(yǔ)句中，mysql必須有/tmp/的讀權(quán)限

導(dǎo)入csv

mysql> load data infile '/tmp/mytbl.csv' into table mytbl fields terminated by ',' enclosed by '"' lines terminated by '\r\n'

處理重復(fù)主鍵

替換已有值

mysql> load data infile '/tmp/mytbl.txt' replace into table mytbl fields terminated by '\t' lines terminated by '\n'

表中已有則不導(dǎo)入

mysql> load data infile '/tmp/mytbl.csv' ignore into table mytbl fields terminated by ',' enclosed by '"' lines terminated by '\r\n'

跳過(guò)文件行

以下示例為跳過(guò)第一行

mysql> load data infile '/tmp/mytbl.txt' into table mytbl ignore 1 lines;

預(yù)處理

文件data.txt內(nèi)容：

Date Time Name

Weight State

2006-09-01 12:00:00 Bill Wills

200 Nevada

2006-09-02 09:00:00 Jeff Deft

150 Oklahoma

2006-09-04 03:00:00 Bob Hobbs

225 Utah

2006-09-07 08:00:00 Hank Banks

175 Texas

文件必須被加載入如下的表

create table tbl

(

dt datetime,

last_name char(10),

first_name char(10),

weight_kg float,

st_abbrev char(2)

)

create table states

(

name varchar(20),

shortname char(2)

)

states 表中內(nèi)容:

name shortname

Nevada NV

Oklahoma OK

Utah UT

Texas TX

insert into states

values('Nevada','NV')

,('Oklahoma','OK')

,('Utah', 'UT')

,('Texas', 'TX')

導(dǎo)入：

load data infile '/tmp/data.txt' into table tbl

ignore 1 lines

(@date,@time,@name,@weight_lb,@state)

set dt=concat(@date,' ',@time),

first_name=substring_index(@name,' ',1),

last_name=substring_index(@name,' ',-1),

weight_kg=@weight_lb * .454,

st_abbrev = (select shortname from states where name=@state);

結(jié)果：

mysql> select * from tbl; +---------------------+-----------+------------+-----------+-----------+

| dt | last_name | first_name | weight_kg | st_abbrev |

+---------------------+-----------+------------+-----------+-----------+

| 2006-09-01 12:00:00 | Wills | Bill | 90.8 | NV |

| 2006-09-02 09:00:00 | Deft | Jeff | 68.1 | OK |

| 2006-09-04 03:00:00 | Hobbs | Bob | 102.15 | UT |

| 2006-09-07 08:00:00 | Banks | Hank | 79.45 | TX |

+---------------------+-----------+------------+-----------+-----------+

將windows本地文件導(dǎo)入到linux下的mysql數(shù)據(jù)庫(kù)，加local

load data local infile 'C:/mytbl.txt' into table mytbl fields terminated by '\t' lines terminated by '\r\n'