数据库基本指令

网站编辑2023-06-10 11:37:15541

数据库基本指令是一个系统组件,用于管理和维护数据库系统。这些指令包括:

1. SELECT:

• 选择要搜索的表格以及搜索条件:SELECT * FROM table1
• 返回搜索结果:SELECT FROM table2
• 查看结果:CHECK IN
• 修改结果数据:CHECK UP BY table1.*
• 返回搜索结果的详细信息:CHECK IN (select name, age, email, dentifier, revenue, profit_available),
• 查看表结构:SET tablename='usertable', table_name='columns'
• 增加表:INSERT INTO tablename VALUES ('usertable', 'columns','revenue','profit_available')
• 删除表:DELETE TABLE table_name

2. DISABLE:

• 在数据库中创建或更改表:INSERT INTO tablename VALUES ('usertable', 'fields', 'columns')
• 查看表:SELECT * FROM table1
• 返回表结构:DISABLERE (select name, age, email, dentifier, revenue, profit_available)
• 修改表结构:DISABLERE (select name, age, email, dentifier, revenue, profit_available)
• 删除表:DELETE TABLE table_name

3. INSERT:

• 根据表结构搜索数据:INSERT INTO tablename VALUES ('usertable', 'fields', 'columns')
• 查看数据:DISABLERE (select name, age, email, dentifier, revenue, profit_available)
• 修改数据:INSERT INTO tablename VALUES ('usertable', 'fields', 'columns')
• 删除数据:DELETE TABLE table_name

4. UPDATE:

• 在特定日期前自动更新数据库:UPDATE INTO table_name
• 查看日志:UPDATE INTO table_name DETECTED
• 修改日志:UPDATE INTO table_name
• 关闭日志:UPDATE INTO table_name

5. DELETE:

• 删除表:DELETE TABLE table_name

6. COLLATE:

• 删除表:COLLATE TABLE table_name
• 查看数据:COLLATE TABLE table_name DETECTED
• 修改数据:COLLATE TABLE table_nam