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logging categories, the very good
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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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Java数字图像处理,对图像进行FFT变换
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一个java发牌程序,能自动为用户发牌,很好玩
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keyboard can be achieved find functional errors
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文献信息查询系统!采用Java连接数据库!通过用户名,作者查询相应的数据!...
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Oracle client and the Oracle server transmitted among Java source code .* Note :...
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基于java的xsl与xml程序例子
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利用URLConnection对象访问远程文件
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