--用户工资表，交税等级表，工资决定交税等级，现取指定等级的用户名。
--创建测试数据 create table emp(empid int IDENTITY(1,1) PRIMARY KEY,empname varchar(10),empsal int) insert into emp select 'A', '3231' insert into emp select 'B', '1966' insert into emp select 'C', '5564' insert into emp select 'D', '3544' insert into emp select 'E', '5123' go
--select * from emp
create table taxinfo(id int identity(1,1) primary key,minsalval int,maxsalval int,taxlevel varchar(4)) insert into taxinfo select '0', '2000','一' insert into taxinfo select '2001', '3000','二' insert into taxinfo select '3001', '4000','三' insert into taxinfo select '4001', '5000','四' insert into taxinfo select '5001', '10000','五' go
--select * from taxinfo
--创建函数获取交税等级 create function f_getLvl(@val int) returns varchar(1000) as begin declare @lvl varchar(1000) set @lvl='' select @lvl = taxlevel from taxinfo where maxsalval>=@val and minsalval<=@val return @lvl end go
--使用临时表，选出交税等级为一的员工的名字 create table #tmp (tmpid int,tmpname varchar(10),tmplvl varchar(4)) insert into #tmp select empid,empname,dbo.f_getLvl(empsal) from emp select * from #tmp where tmplvl='一'
--删除测试数据 --drop table #tmp --drop function f_getLvl --drop table emp --drop table taxinfo
