数据库游标复习(MSSQL用内置的pubs做纯SQL的报表)
今天复习了下游标 流程控制语句 SQL查询等基础语法 做了一个纯SQL报表 附图:
代码如下:用了一个游标的嵌套呵呵
declare @jobid smallint ,@jobdesc varchar(50)
declare @name varchar(50),@joblvl smallint ,@hdate smalldatetime
declare cur_job cursor for
select job_id,job_desc from jobs order by job_id asc
open cur_job
fetch next from cur_job into @jobid,@jobdesc
while @@fetch_status=0
begin
--显示当前的工作编号和工作描述
print cast(@jobid as varchar(4))+';'[email protected]
declare cur_emp cursor for
select fname +' '+lname,job_lvl,hire_date
from employee
where [email protected]
open cur_emp
fetch next from cur_emp into @name ,@joblvl,@hdate
while @@fetch_status=0
begin
print '雇员:'[email protected] +',级别:'+cast(@joblvl as varchar(4))+',参加工作日期:'+datename(year,@hdate)+'年'+
datename(mm,@hdate)+'月'+datename(day,@hdate)+'日'
fetch next from cur_emp into @name ,@joblvl,@hdate
end
print'================================================================================='
close cur_emp
deallocate cur_emp
fetch next from cur_job into @jobid,@jobdesc
end
close cur_job
deallocate cur_job
go