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alter table tbl_name add col_name type
例如,给表增加一列weight
mysql>alter table...
alter table tbl_name add col_name type
例如,给表增加一列weight
mysql>alter table pet add weight int
删除列
alter table tbl_name drop col_name
例如,删除列weight:
mysql>alter table pet drop weight
改变列
alter table tbl_name modify col_name type
例如,改变weight的类型:
mysql> alter table pet modify weight samllint
另一种方法是:
alter table tbl_name change old_col_name col_name type
例如:
mysql> alter table pet change weight weight samllint
给列更名
mysql>alter table pet change weight wei
给表更名
alter table tbl_name rename new_tbl
例如,把pet表更名为animal
mysql>alter table pet rename animal
-alter table tbl_name add col_name type for example, to form an increase in weight mysql> alter table pet add weight int Remove Columns alter table tbl_name drop col_name For example, the deletion of column weight: mysql> alter table pet drop weight change out alter table tbl_name modify col_name type for example, the type of weight change: mysql> alter table pet modify w
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包括八个硬币关于假币的算法,是c和java版的对比实现
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一个书店的例子,利用Oralce数据库! 很好的学习例子
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Simulation with JAVA development competition and cooperation between enterprises...
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多
Multi session 多任务编程的例子-multi-task programming examples
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java封装好的显示日历 java封装好的显示日历
java封装好的显示日历 java封装好的显示日历 -java calendar java package package good show good show good show package calendar java calendar
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