mysql使用经验 1.比如分页
select * from table limit 6
和select * from table limit 0,6  等价select * from table limit 5,10；
一般前面的5放的是 漂移 后面的10放的是 一页多少行
拿到数据库 table里面的数据是 第6条到15条 42.121.56.21sqlserver里面序列的用法/****** Script for SelectTopNRows command from SSMS  ******/
SELECT TOP 1000 [id],[username],[password],[telephone]FROM [MyWeb].[dbo].[adminusers]/****** Script for SelectTopNRows command from SSMS  ******/
SELECT TOP 1000 [id],[username],[password],[telephone]FROM [MyWeb].[dbo].[adminusers]create squences a;USE MyWeb ;create sequence userid;USE AdventureWorks2012insert  ibto [MyWeb].[dbo].[adminusers] values(NEXT VALUE FOR userid,'chenyu','123','13212617498');CREATE SCHEMA Test1;CREATE SEQUENCE Test1.CountBy2START WITH 1INCREMENT BY 1 ;GOSELECT NEXT VALUE FOR Test1.CountBy2 AS FirstUse;SELECT NEXT VALUE FOR Test.CountBy1 AS SecondUse;INSERT [MyWeb].[dbo].[adminusers](id,username,password,telephone)VALUES (NEXT VALUE FOR Test.CountBy1,'chenxuan','123','13212617498') ;
commit;INSERT [MyWeb].[dbo].[adminusers] (id,username,password,telephone)VALUES (NEXT VALUE FOR Test1.CountBy2,'biyu','123','123456789')