一键排班软件开发用到的sql语句

1.查询表中某个字段值重复出现两次以上

    select distinct 字段 from 表 where 字段 in (select 字段 from 表 group by 字段 having count(1)>1)

2.把查询结果当做一个表来查询

    select * from (select sum(id) as sunNum from people) as tempTable

3.将查询出的记录插入到另一张表中

   插入新表(会在数据库中生成)：

   select 目标列 into 新表 from 旧表 where 条件

   插入到已存在的表：

   insert into 插入的表名 select 目标列 from 表名 where 条件 

4.随机取n条数据

    select top 10 from 表 where 条件 order by NEWID()

    说明：NEWID()在扫描每条记录的时候都生成一个值，而生成的值是随机的，没有大小顺序，所以最终结果再按这个排序，排序结果当然就是无序的了

5. 判断数据库中是否存在某张表

    select count(1) from syscolumns where [id]=object_id('表名称')

    结果等于0就是没有，大于0就是有

6.查询结果的连接Union、相减Except

    

(select nameA from preduty where (week='星期一' or week='星期三' or week='星期五' or
week ='星期六') and (mix='true'))
union
(
select nameA from preduty where (mix='ffalse') and
(week='星期一' or week='星期三' or week='星期五' or week ='星期六')
)
union
(
select nameB from preduty where (mix='ffalse') and
(week='星期一' or week='星期三' or week='星期五' or week ='星期六'))
)
except
(
select nameA from tableThursday
)

7.添加新字段

alter table tableThursday add xvhao int identity(1,1) primary key

8.给个起始日期，日期在起始日期的基础上每天加1，依次插入到表中某列

ALTER PROCEDURE [dbo].[InsertNowDate]
@startdate date

AS

declare @countDay int
set @countDay =1
while(@countDay<=32)

BEGIN

update nowdutysheet set dutydate=(CONVERT(date,@startdate,102))
where nowid=@countDay

set @startdate=DATEADD(DAY,1,@startdate)
set @countDay=@countDay+1

END

9.在新值班表中填充每个人的电话，从基础表获得信息

ALTER PROCEDURE [dbo].[InsertPhoneAB]

AS

declare @countDay int
declare @stuNameA nchar(8)
declare @stuNameB nchar(8)

set @countDay =1
while(@countDay<=32)

BEGIN

set @stuNameA=(select top 1 nameA from nowdutysheet where phoneA is null order by nowid)

update nowdutysheet set phoneA=(select phone from people where name=@stuNameA) where nameA=@stuNameA

set @stuNameB=(select top 1 nameB from nowdutysheet where phoneB is null order by nowid)

update nowdutysheet set phoneB=(select phone from people where name=@stuNameB) where nameB=@stuNameB

set @countDay=@countDay+1

END

10.重置操作，删除数据库中所有没有用的生成表

ALTER PROCEDURE [dbo].[ReDo]

AS
BEGIN

if (select count(1) from syscolumns where [id]=object_id( 'tableThursday' ))>0
drop table dbo.tableThursday
if (select count(1) from syscolumns where [id]=object_id( 'tableTuesSun' ))>0
drop table dbo.tableTuesSun
if (select count(1) from syscolumns where [id]=object_id( 'tablecommon' ))>0
drop table dbo.tablecommon
if (select count(1) from syscolumns where [id]=object_id( 'temptableA' ))>0
drop table dbo.temptableA
truncate table nowdutysheet
update nowdutysheet set dutydate =null
if (select count(1) from syscolumns where [id]=object_id( 'tableMale' ))>0
drop table tableMale
if (select count(1) from syscolumns where [id]=object_id( 'ThursMale' ))>0
drop table ThursMale

END

11.从表中随机获取一名同学到新值班表

--从tableTuesSun中随机获取一名女生
ALTER procedure [dbo].[SelectOneCommon]
as

begin
declare @stuName nvarchar(4)
declare @weekIndex int
set @weekIndex=(select min(nowid)  from nowdutysheet where (week='星期一' or
week='星期三' or week ='星期五' or week='星期六' ) and ( nameA is null))
--随机选取一名周一/三/五/六值班的
set @stuName=(select  top 1 nameA from tablecommon where herstate='1'
order by NEWID())
--状态置0，下次不再取
update tablecommon set herstate='0',choosetime=GETDATE() where nameA=@stuName
update nowdutysheet set nameA =@stuName  where  nowid=@weekIndex

end

12.在曹教授的帮助下，写的给个起始星期X，向下自动填充星期

    存储过程：

      

ALTER PROCEDURE [dbo].[GetWeek]
@StartWeek int
as
declare @mycount int
declare @thisWeek int
declare @countDay int
set @countDay=1
set @mycount=@StartWeek
while(@countDay<=32)
begin
set @thisWeek=(@mycount+7)%7
insert into nowdutysheet(week) values(dbo.GetWeekFunction(@thisWeek))
set @mycount=@mycount+1
set @countDay=@countDay +1
end

    标量值函数：

    

ALTER function [dbo].[GetWeekFunction](@weekindex int)
returns nvarchar(4)
as
begin
declare @myWeekName nvarchar(4)
if(@weekindex=1)
begin
set @myWeekName='星期一'
return @myWeekName
end
if(@weekindex=2)
begin
set @myWeekName='星期二';
return @myWeekName;
end
if(@weekindex=3)
begin
set @myWeekName='星期三';
return @myWeekName;
end
if(@weekindex=4)
begin
set @myWeekName='星期四';
return @myWeekName;
end
if(@weekindex=5)
begin
set @myWeekName='星期五';
return @myWeekName;
end
if(@weekindex=6)
begin
set @myWeekName='星期六'
return @myWeekName
end
if(@weekindex=0)
begin
set @myWeekName='星期日'
return @myWeekName
end
return @myWeekName
end