10000 milliseconds to seconds

Ii. Improve SQL statements 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

  Improve SQL statements 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=''zhangsan'' and

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> 10000 And

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

. NET program can invoke the characteristics of the ODP, Oracle database operations, today to say about the function of data bulk insertion, the use of technology is not high, I believe many friends have contacted, little brother to swim, hehe. This

Microsoft's SQL Server provides two types of indexes: Clustered indexes (clustered index, also called clustered indexes, clustered indexes), and nonclustered indexes (nonclustered index, also called nonclustered indexes, non-clustered indexes) ...(a)

(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

Link Address: http://www.cnblogs.com/armyfai/p/4646213.htmlto: Here we will see the use of the ODP in C # to import millions data instantaneously in an Oracle database, which is important for fast batch import implementations. . NET program through

First, the practical, the misunderstanding of the use of the indexThe purpose of the theory is to apply. Although we have just listed when clustered or nonclustered indexes should be used, in practice the above rules are easily overlooked or cannot