MySQL知識（二十三） 表的匯出和匯入

2021-07-10 05:05:53 字數 4476 閱讀 5991

mysql資料庫中的資料可以匯出成.sql文字檔案、xml檔案或html檔案。

select columnlist from


table


where condition into outfile 'filename' [option]


--options 選項


fields terminated by


'value'    /*設定字段之間分隔符，單個或多個字元，預設為'\t'*/


fields [optionally] encloseed by


'value'     /*設定字段包圍分隔符，單個字元*/


fields escaped by


'value'       /*如何寫入或讀取特殊字元，單個字元*/


lines starting by


'value'       /*每行資料開頭的字元，單個或多個*/


lines terminated by


'value'     /*每行資料結尾的字元，單個或多個*/
（1）例子

select * from test.person into outfile "c:/person0.txt";
person0.txt

1


green


21  student


2   suse    2   dancer


3   mary    24  musician


4   willam  20  student


5   laura   0


6   evans   27  secretary


7   dale    22  student


8   edison  28  cook


9   harry   21  student
（2）例子

select * from test.person into outfile "c:/person1.txt"


fields 


terminated by


','    enclosed by


'\"'


escaped by


'\''


lines 


terminated by


'\r\n';
person1.txt

"1","green","21","student"


"2","suse","2","dancer"


"3","mary","24","musician"


"4","willam","20","student"


"5","laura","0",""


"6","evans","27","secretary"


"7","dale","22","student"


"8","edison","28","cook"


"9","harry","21","student"
mysqldump -t path -u root -p dbname [tables][options]


--option 選項


--fields-terminated-by=value


--fields-enclosed-by=value


--fields-optionally-enclosed-by=value


--fields-escaped-by=value


--lines-terminated-by=value
（1）例子

mysqldump -t c:/ test person -u root -p
語句執行後生成兩個檔案，person.sql（包含create語句等）和person.txt（包含資料資訊）。

mysql -u root -p


--execute=


"select 語句" dbname>filename.txt
相比mysqldump，mysql工具匯出的結果可讀性更強。

（1）例子

mysql -u root -p


--execute=


"select * from person;" test > c:\person3.txt
（2）例子，使用- -vertical引數顯示結果

mysql -u root -p


--vertical --execute=


"select * from person;" test > c:\person4.txt
（3）例子，匯出為html檔案

mysql -u root -p


--html --execute=


"select * from person;" test > c:\person5.html
（4）例子，匯出為xml檔案

mysql -u root -p


--xml


--execute=


"select * from person;" test > c:\person6.


xml
load data infile 'filename.txt'


into


table tablename [option][ignore number lines]


--options 選項


fields terminated by


'value'    /*設定字段之間分隔符，單個或多個字元，預設為'\t'*/


fields [optionally] encloseed by


'value'     /*設定字段包圍分隔符，單個字元*/


fields escaped by


'value'       /*如何寫入或讀取特殊字元，單個字元*/


lines starting by


'value'       /*每行資料開頭的字元，單個或多個*/


lines terminated by


'value'     /*每行資料結尾的字元，單個或多個*/
（1）例子

mysql> select *  from test.person into outfile "c:/person0.txt";


query ok, 9 rows affected


mysql> use test;


database changed


mysql> delete


from person;


query ok, 9 rows affected


mysql> load data  infile 'c:/person0.txt'


into


table test.person;


query ok, 9 rows affected


records: 9  deleted: 0  skipped: 0  warnings: 0


mysql> select * from person;


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


| id | name   | age | info      |


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


|  1 | green  |  21 | student   |


|  2 | suse   |   2 | dancer    |


|  3 | mary   |  24 | musician  |


|  4 | willam |  20 | student   |


|  5 | laura  |   0 |           |


|  6 | evans  |  27 | secretary |


|  7 | dale   |  22 | student   |


|  8 | edison |  28 | cook      |


|  9 | harry  |  21 | student   |


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


9 rows in set


mysqlimport -u root -p dbname filename.txt [options]


--option 選項


--fields-terminated-by=value


--fields-enclosed-by=value


--fields-optionally-enclosed-by=value


--fields-escaped-by=value


--lines-terminated-by=value


--ignore-lines=n

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