大学英语词汇短语释义解析及例句 alter table


释义：

alter table 修改表的定义

例句：



This is done by ALTER TABLE statements.

这是通过ALTER TABLE语句来完成的。



Why does this ALTER TABLE query throw syntax error?

为什么这个改变表查询把语法错误？



Columns can be renamed online using the ALTER TABLE statement.

使用ALTER table语句在线重命名列。



You can create a table WITH AUDIT clause or alter table ADD|DROP AUDIT clause.

您可以创建一个表格WITHAUDIT 子句，或者改变表格ADD|DROP AUDIT 子句。



The ALTER table statement is used to add or drop columns in an existing table.

ALTER TABLE语句可以用来给现有的表进行添加或是删除栏目的操作。



The second algorithm is used when the table is placed in APPEND mode through ALTER table.

当表是通过ALTER table以append模式放置时，就要使用第二种算法。



According to this sample, the following steps will be executed by ALTER TABLE statements.

对于这个示例，ALTER table语句将执行以下步骤。



Note, however, that the ALTER TABLE statement only allows you to increase the inline length.

但是要注意，ALTER table语句只允许增加inlinelength。



Instead, you must create the table without the constraint and then add it later with an ALTER table statement.

相反，你必须创建一个没有约束的表，然后添加alter TABLE语句。



Your database user needs quite a lot database permissions, including alter table, drop table, same for index etc.

数据库用户需要相当多的权限，包括修改表格，放下表格，索引一类的也一样。



The ALTER COLUMN SET DATA type option on the ALTER TABLE statement has been extended to support all compatible types.

ALTER table语句中的ALTERCOLUMNSETDATATYPE选项进行了扩展，可以支持所有兼容的类型。



Using the grid, you just need to execute the alter table SQL statement on the server where you have enabled the grid.

使用网格，您只需在启用了网格的服务器上执行SQL命令alter table。



SQL described tables and indexes can also be placed and moved by the corresponding ALTER TABLE or ALTER INDEX commands.

SQL描述的表和索引也可以通过对应的ALTER TABLE或 ALTERINDEX命令放置和移动。