MySQL与SQLite的迁移_MySQL
MySQL与SQLite的迁移_MySQL
从sqlite数据库导入到mysql数据库实例
从sqllite中导出数据文件库XX.sql的文件。导入到mysql数据库中。
键入命令:
source /smb/works/mysql.sql
出现很多如下的错误:
You have an error in your SQL syntax; check the manual thatcorresponds to your MariaDB server version for the right syntax to use near XXXXXXXXX
原因是sqllite与mysql语句有很大的区别:左边为MYSQL、右边为SQLite
1、启动事务

Mysql 为start transaction
Sqlite 为 begin transaction
2、提交事务
Mysql 为commit
Sqlite 为commit transaction
3 创建表

Mysql的库名、表名、列明等都不需要使用[ ],sqlite 所有的名称都需要增加[ ]。
4、数据类型
sqlite的数据类型mysql都支持。但是sqlite中定义了范围在mysql中导入会报错。只有varchar需要定义范围。

5、冲突解决
SQLite 的 ONCONFLICT子句不是独立的SQL命令。这是一条可以出现在许多其他SQL命令中的非标准的子句。在Mysql中不支持。
从mysql数据库导入到sqlite数据库实例
第一步: mysql导出.sql文件
在终端中输入
mysqldump -h localhost -u root -p mydb>e:\mysql\mydb.sql
然后输入密码,等待一会导出就成功了,可以到目标文件中检查是否成功。
第二步:使用命令打开数据库db文件。
在当前目录下创建数据库文件 test.db,若存在该数据库文件,则是打开数据库文件。如果想从别人的db文件上修改,也可以采用这样的方式打开其数据库文件,然后修改。导入成功后出现下图所示:

第三步:使用dabatabse命令
可以库main对应的数据库文件保存路径为第二步打开的文件。

第四步:修改数据库
使用SQL语句对该数据库进行操作。如果从别的库迁移过来,使用库导出的sql文件,用记事本打开sql文件,mysql与sqlite的sql语句有一些差别,在文档《从sqlite数据库导入到mysql数据库》一文中已有标书。
若需要对数据库的表进行创建、数据结构进行调整都可以在.sql文件中进行修改完后,使用read命令读入sql文件。 如果有错,则返回错误信息。 如果正确,就直接返回了。如图:


第五步:确认是否修改成功
使用headers on命令,打开表开关,然后sql语句select查阅表,看表中的内容是否已经修改成功。

sqlite3 的命令需要通过“.XXX”的形式调用。调用命令前需要加”.”。
sql语句需要“XXXXXXXXXX;”的形式调用。语句结束后需要加“;”
sqlite的命令集合:


mysql的命令集合

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