Mysql的增删改查语句简单实现

摘要：Mysql的增删改查语句简单实现

[b]Mysql的增删改查语句简单实现[/b] [b]增加记录:[/b]

insert into tablename(...) values(...)
//如果增加的记录包括所有的列，则不需要写数据列表
insert into tablename values(...)

[b]删除记录:[/b]

delete from tablename where condition ;

[b]修改记录:[/b]

update tablename set xx=xx , xx=xx... where condition ;

alter table tablename set xx=xx , xx=xx... where condition ;

[b]查询记录:[/b]

select (...) from tablename where condition ;

select * from tablename where condition ;

[b]删除整个表:[/b]

drop table tablename ;

[b]添加列:[/b]

alter table tablename add column columnname columntype ... ;

[b]删除列:[/b]

alter table tablename drop column columnname ;

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