define gid

create  table [dbo].[ tgongwen]  (     --tgongwen is red-headed table name    [Gid] [int]  identity  (1, 1)   not  null , --The ID number of this table, also the primary key    [ title] [varchar]  ( collate chinese_prc_ci_as ); null ,  

Many people do not know how SQL statements are executed in SQL Server. They are worried that the SQL statements they write will be misunderstood by SQL Server. For example:Select * From Table1 where name = 'hangsan' and TID> 10000And

(1) select title, price from titles where title_id in (select title_id from sales where qty> 30) The execution result of this sentence is: Table 'sales '. The scan count is 18, logical reads are 56, physical reads are 0, and pre-read is 0. Table

Many people do not know how SQL statements are executed in SQL Server. They are worried that the SQL statements they write will be misunderstood by SQL Server. For example: Select * From Table1 where name = 'hangsan' and TID> 10000 And

Select * from table1 where name = 'hangsan' and tID> 10000And execution:Select * from table1 where tID> 10000 and name = 'hangsan'Some people do not know whether the execution efficiency of the preceding two statements is the same, because the two

SELECT * FROM table1 where name= ' Zhangsan ' and TID > 10000and implementation:SELECT * FROM table1 where TID > 10000 and name= ' Zhangsan 'Some people do not know the execution efficiency of the above two statements is the same, because if it is

Compared to iOS. Android is most criticized for its fluency and security.However, from the beginning of 4.0, Android spared no effort to improve its fluency.Especially in the upcoming L version number, with art replaced by Dalvik, I believe it will

Java annotations, from the name, are comments, explanations. But the function is not simply a comment. Annotations (Annotation) provide a formalized way for us to add information to our code, which we can use at a later time (by parsing annotations

Original: http://www.cnblogs.com/pepcod/archive/2013/02/20/2918719.htmlJava annotations, from the name, are comments, explanations. But the function is not simply a comment. Annotations (Annotation) provide a formalized way for us to add information

For those who learn PHP language, for the PHP interface class may not understand very deep, then we will be specific to the PHP interface class interface use. How to use PHP XmlReader to parse XML document correctly In-depth