【MySQL】MySQL之导入和导出
- SELECT ... INTO OUTFILE ...
- Mysqldump工具
SELECT * FROM tablename INTO OUTFILE 'target_file' [option];
- FIELDS TERMINATED BY 'string'(字段分隔符,默认为制表符‘\t’);
- FIELDS [OPTIONALLY] ENCLOSED BY 'char' (字段引用符,如果加OPTIONALLY选项则只用在char、varchar和text等字符型字段上,默认不使用引用符);
- FIELDS ESCAPED BY ‘char’ (转义字符,默认为‘\’);
- LINES STARTING BY ‘string’ (每行前都加此字符串,默认‘’);
- LINES TERMINATED BY ‘string’ (行结束符,默认为‘\n’);
mysql> select *from t_mm into outfile '/usr/local/mysql/mysql-files/emp.txt';
Query OK, 6 rows affected (0.04 sec)mysql> system more /usr/local/mysql/mysql-files/emp.txt;
1 Alen 2018-03-09 15:33:03
3 UK 2018-03-09 15:35:55
4 Japan 2018-03-09 12:36:16
6 USA 2018-03-09 13:19:35
8 Begin MMM.... 2018-03-09 14:54:40
10 Hello 2018-03-12 15:33:22
mysql>
mysql> select *from t_mm into outfile '/usr/local/mysql/mysql-files/emp.txt' fields terminated by ',' enclosed by '"';
Query OK, 6 rows affected (0.00 sec)mysql> system more /usr/local/mysql/mysql-files/emp.txt;
"1","Alen","2018-03-09 15:33:03"
"3","UK","2018-03-09 15:35:55"
"4","Japan","2018-03-09 12:36:16"
"6","USA","2018-03-09 13:19:35"
"8","Begin MMM....","2018-03-09 14:54:40"
"10","Hello","2018-03-12 15:33:22"
mysql>
mysql> select *from t_mm into outfile '/usr/local/mysql/mysql-files/emp.txt' fields terminated by ',' optionally enclosed by '"';
Query OK, 6 rows affected (0.00 sec)mysql> system more /usr/local/mysql/mysql-files/emp.txt;
1,"Alen","2018-03-09 15:33:03"
3,"UK","2018-03-09 15:35:55"
4,"Japan","2018-03-09 12:36:16"
6,"USA","2018-03-09 13:19:35"
8,"Begin MMM....","2018-03-09 14:54:40"
10,"Hello","2018-03-12 15:33:22"
mysql>
mysqldump -uusername -p -T target_dir dbname tablename [option]
- --fields-terminated-by=name(字段分隔符);
- --fields-enclosed-by=name(字段引用符);
- --fields-optionally-enclosed-by=name(字段引用符,只用在char、varchar和text等字符型字段上);
- --fields-escaped-by=name(转义字符);
- --lines-terminated-by=name(记录结束符);
mysql> system mysqldump -uroot -p -T /usr/local/mysql/mysql-files/ test;
Enter password:
mysql> system ls -l /usr/local/mysql/mysql-files/
total 16
-rw-r--r--. 1 root root 1437 Mar 13 22:11 t_emp.sql
-rw-rw-rw-. 1 mysql mysql 111 Mar 13 22:11 t_emp.txt
-rw-r--r--. 1 root root 1435 Mar 13 22:11 t_mm.sql
-rw-rw-rw-. 1 mysql mysql 171 Mar 13 22:11 t_mm.txt
mysql>
mysql> system more /usr/local/mysql/mysql-files/t_emp.txt
1 张三 2018-03-13 18:53:44
3 李四 2018-03-13 18:53:44
5 Alen 2018-03-13 17:37:34
7 USA 2018-03-13 17:39:45
mysql> system more /usr/local/mysql/mysql-files/t_emp.sql--导出表定义脚本
mysql> system mysqldump -uroot -p -T /usr/local/mysql/mysql-files/ test t_emp --fields-terminated-by=',' --fields-optionally-enclosed-by='"';
Enter password:
mysql> system ls -l /usr/local/mysql/mysql-files/
total 8
-rw-r--r--. 1 root root 1437 Mar 13 22:18 t_emp.sql
-rw-rw-rw-. 1 mysql mysql 127 Mar 13 22:18 t_emp.txt
mysql> system more /usr/local/mysql/mysql-files/t_emp.txt
1,"张三","2018-03-13 18:53:44"
3,"李四","2018-03-13 18:53:44"
5,"Alen","2018-03-13 17:37:34"
7,"USA","2018-03-13 17:39:45"
mysql>
- LOAD DATA INFILE...
- MySQLImport工具
LOAD DATA [LOCAL] INFILE 'filename' INTO TABLE tablename [option]
- FIELDS TERMINATED BY 'string'(字段分隔符,默认为制表符‘\t’);
- FIELDS [OPTIONALLY] ENCLOSED BY 'char' (字段引用符,如果加OPTIONALLY选项则只用在char、varchar和text等字符型字段上,默认不使用引用符);
- FIELDS ESCAPED BY ‘char’ (转义字符,默认为‘\’);
- LINES STARTING BY ‘string’ (每行前都加此字符串,默认‘’);
- LINES TERMINATED BY ‘string’ (行结束符,默认为‘\n’);
- IGNORE number LINES(忽略输入文件中的前n行数据);
- (col_name_or_user_var,...)(按照列出的字段顺序和字段数量加载数据);
- SET col_name=expr,...将列做一定的数值转换后再加载;
mysql> load data infile '/usr/local/mysql/mysql-files/t_emp.txt' into table t_emp fields terminated by ',' optionally enclosed by '"';
Query OK, 4 rows affected (0.02 sec)
Records: 4 Deleted: 0 Skipped: 0 Warnings: 0mysql> select *from t_emp;
+----+--------+---------------------+
| id | name | cdate |
+----+--------+---------------------+
| 1 | 张三 | 2018-03-13 18:53:44 |
| 3 | 李四 | 2018-03-13 18:53:44 |
| 5 | Alen | 2018-03-13 17:37:34 |
| 7 | USA | 2018-03-13 17:39:45 |
+----+--------+---------------------+
4 rows in set (0.00 sec)mysql>
mysql> truncate table t_emp;
Query OK, 0 rows affected (0.06 sec)
mysql> load data infile '/usr/local/mysql/mysql-files/t_emp.txt' into table t_emp fields terminated by ',' enclosed by '"' ignore 2 lines;
Query OK, 2 rows affected (0.03 sec)
Records: 2 Deleted: 0 Skipped: 0 Warnings: 0mysql> select *from t_emp;
+----+------+---------------------+
| id | name | cdate |
+----+------+---------------------+
| 5 | Alen | 2018-03-13 17:37:34 |
| 7 | USA | 2018-03-13 17:39:45 |
+----+------+---------------------+
2 rows in set (0.00 sec)
mysql> system more /usr/local/mysql/mysql-files/t_emp.txt
1,"张三","2018-03-13 18:53:44"
3,"李四","2018-03-13 18:53:44"
5,"Alen","2018-03-13 17:37:34"
7,"USA","2018-03-13 17:39:45"
mysql>
mysql> system more /usr/local/mysql/mysql-files/t_emp.txt
Alen1,"张三","2018-03-13 18:53:44"
3,"李四","2018-03-13 18:53:44"
Alen5,"Alen","2018-03-13 17:37:34"
7,"USA","2018-03-13 17:39:45"
mysql> load data infile '/usr/local/mysql/mysql-files/t_emp.txt' into table t_emp fields terminated by ',' enclosed by '"' lines starting by 'Alen';
Query OK, 2 rows affected (0.05 sec)
Records: 2 Deleted: 0 Skipped: 0 Warnings: 0mysql> select *from t_emp;
+----+--------+---------------------+
| id | name | cdate |
+----+--------+---------------------+
| 1 | 张三 | 2018-03-13 18:53:44 |
| 5 | Alen | 2018-03-13 17:37:34 |
+----+--------+---------------------+
2 rows in set (0.00 sec)mysql>
mysql> desc t_emp;
+-------+--------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+-------------------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| name | varchar(100) | YES | | NULL | |
| cdate | datetime | YES | | CURRENT_TIMESTAMP | |
| sex | char(1) | YES | | NULL | |
+-------+--------------+------+-----+-------------------+----------------+
4 rows in set (0.00 sec)mysql> system more /usr/local/mysql/mysql-files/t_emp.txt
1,"张三","2018-03-13 18:53:44"
3,"李四","2018-03-13 18:53:44"
5,"Alen","2018-03-13 17:37:34"
7,"USA","2018-03-13 17:39:45"
mysql> truncate table t_emp;
Query OK, 0 rows affected (0.07 sec)mysql> load data infile '/usr/local/mysql/mysql-files/t_emp.txt' into table t_emp fields terminated by ',' enclosed by '"' (id,name,cdate);
Query OK, 4 rows affected (0.06 sec)
Records: 4 Deleted: 0 Skipped: 0 Warnings: 0mysql> select *from t_emp;
+----+--------+---------------------+------+
| id | name | cdate | sex |
+----+--------+---------------------+------+
| 1 | 张三 | 2018-03-13 18:53:44 | NULL |
| 3 | 李四 | 2018-03-13 18:53:44 | NULL |
| 5 | Alen | 2018-03-13 17:37:34 | NULL |
| 7 | USA | 2018-03-13 17:39:45 | NULL |
+----+--------+---------------------+------+
4 rows in set (0.00 sec)mysql>
mysql> desc t_emp;
+-------+--------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+-------------------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| name | varchar(100) | YES | | NULL | |
| cdate | datetime | YES | | CURRENT_TIMESTAMP | |
| sex | int(1) | YES | | NULL | |
+-------+--------------+------+-----+-------------------+----------------+
4 rows in set (0.00 sec)mysql> system more /usr/local/mysql/mysql-files/t_emp.txt
1,1,"张三","2018-03-13 18:53:44",25
3,1,"李四","2018-03-13 18:53:44",24
5,1,"Alen","2018-03-13 17:37:34",30
7,0,"Lucy","2018-03-13 17:39:45",20
mysql> truncate table t_emp;
Query OK, 0 rows affected (0.07 sec)mysql> load data infile '/usr/local/mysql/mysql-files/t_emp.txt' into table t_emp fields terminated by ',' enclosed by '"' (id,sex,name,cdate,@tmp);
Query OK, 4 rows affected (0.03 sec)
Records: 4 Deleted: 0 Skipped: 0 Warnings: 0mysql> select *from t_emp;
+----+--------+---------------------+------+
| id | name | cdate | sex |
+----+--------+---------------------+------+
| 1 | 张三 | 2018-03-13 18:53:44 | 1 |
| 3 | 李四 | 2018-03-13 18:53:44 | 1 |
| 5 | Alen | 2018-03-13 17:37:34 | 1 |
| 7 | Lucy | 2018-03-13 17:39:45 | 0 |
+----+--------+---------------------+------+
4 rows in set (0.00 sec)mysql>
mysql> desc t_emp;
+-------+--------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+-------------------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| name | varchar(100) | YES | | NULL | |
| cdate | datetime | YES | | CURRENT_TIMESTAMP | |
| sex | int(1) | YES | | NULL | |
+-------+--------------+------+-----+-------------------+----------------+
4 rows in set (0.00 sec)mysql> system more /usr/local/mysql/mysql-files/t_emp.txt
1,"男","张三","2018-03-13 18:53:44",25
3,"男","李四","2018-03-13 18:53:44",24
5,"男","Alen","2018-03-13 17:37:34",30
7,"女","Lucy","2018-03-13 17:39:45",20
mysql> load data infile '/usr/local/mysql/mysql-files/t_emp.txt' into table t_emp-> fields terminated by ','-> enclosed by '"' (id,@tmp_sex,name,cdate,@tmp)-> set sex=if(@tmp_sex='男',1,0);
Query OK, 4 rows affected (1.05 sec)
Records: 4 Deleted: 0 Skipped: 0 Warnings: 0mysql> select *from t_emp;
+----+--------+---------------------+------+
| id | name | cdate | sex |
+----+--------+---------------------+------+
| 1 | 张三 | 2018-03-13 18:53:44 | 1 |
| 3 | 李四 | 2018-03-13 18:53:44 | 1 |
| 5 | Alen | 2018-03-13 17:37:34 | 1 |
| 7 | Lucy | 2018-03-13 17:39:45 | 0 |
+----+--------+---------------------+------+
4 rows in set (0.00 sec)mysql>
mysqlimport -uroot -p [local] dbname tab.txt [option]
- --fields-terminated-by=name(字段分隔符);
- --fields-enclosed-by=name(字段引用符);
- --fields-optionally-enclosed-by=name(字段引用符,只用在char、varchar和text等字符型字段上);
- --fields-escaped-by=name(转义字符);
- --lines-terminated-by=name(记录结束符);
- --ignore-lines=number(忽略前几行);
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