Ⅰ 复杂的sql语句
描述有点不具体，这个是把结果以列的形式展示：
selectid,name,casewhentime1>time2then'错误一'endastype1,
casewhentime1>time3then'错误二'endastype2，
casewhentime4>time5then'错误三'endastype3
fromtest
wherename='小明'
---结果集放在一起
selectid,name,casewhentime1>time2then'错误一'end+
casewhentime1>time3then'错误二'end+
casewhentime4>time5then'错误三'endasResult
fromtest
wherename='小明'
Ⅱ 求一个复杂的SQL语句
-- =============================================
-- Author: <Rocky,f_split>
-- Create date: <2010.11.4>
-- Description: <将传入的参数以字符分割,并返回表格形式的参数所分割出来的值>
--select * from f_split('1,2,3,4,5,6',',')
-- =============================================
create function f_split(@SourceSql varchar(8000),@StrSeprate varchar(10))
returns @temp table(a varchar(100))
as
begin
declare @i int
set @SourceSql=rtrim(ltrim(@SourceSql)) --去掉字符中的空格
set @i=charindex(@StrSeprate,@SourceSql) --找分割符在字符中的位置
while @i>=1
begin
insert @temp values(left(@SourceSql,@i-1))
set @SourceSql=substring(@SourceSql,@i+1,len(@SourceSql)-@i)
set @i=charindex(@StrSeprate,@SourceSql)
end
if @SourceSql<>''
insert @temp values(@SourceSql)
return
end
GO
IF EXISTS(SELECT * FROM SYSOBJECTS WHERE NAME='test_4')
DROP TABLE test_4
GO
create table test_4
(
id varchar(20) not null,
value varchar(100) not null
)
insert into test_4 values('1008','A1|A2|A3')
insert into test_4 values('1009','B1|B2|B3|B4')
DECLARE @COUNT INT,@INDEX INT,@ID VARCHAR(20),@VALUE VARCHAR(100)
if object_id(N'[tempdb].dbo.[#TEMP_TEST_4_1]')>0
DROP TABLE #TEMP_TEST_4_1
if object_id(N'[tempdb].dbo.[#TEMP_TEST_4_2]')>0
DROP TABLE #TEMP_TEST_4_2
SELECT * INTO #TEMP_TEST_4_2 FROM test_4 WHERE 1=2
SELECT IDENTITY(INT,1,1) AS IDX ,* INTO #TEMP_TEST_4_1 FROM test_4
SELECT @COUNT=COUNT(*) FROM #TEMP_TEST_4_1
SET @INDEX=1
WHILE (@INDEX<=@COUNT)
BEGIN
SELECT @ID=ID,@VALUE=VALUE FROM #TEMP_TEST_4_1 WHERE IDX=@INDEX
INSERT INTO #TEMP_TEST_4_2 SELECT @ID,* FROM F_SPLIT(@VALUE,'|')
SET @INDEX=@INDEX+1
END
SELECT * FROM #TEMP_TEST_4_2
以上代码经过测试,完全能满足你的需求,请采纳,谢谢!
Ⅲ 一段很复杂很复杂的SQL语句。。求大神解释。。。
Select
*
From
(
Select
*
From
(
Select
Number
,ChineseName
,tb1.DepartmentCode
,DepartmentName
,ShiftId
,ShiftName
,Degree
,AskForLeaveType
,WorkOnDate
,OnDutyType
,StartTime
,EndTime
,AOnDuty
,AOffDuty
,Allday
,tb1.SumTotal
,'Error'=
Case
WhenDegree=1ANDStartTime<=AOnDutyANDEndTime<=AOnDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=1ANDStartTime>=AOffDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=1ANDStartTime>=WorkOnDate+''+'12:30'ANDEndTime<=WorkOnDate+''+'13:30'ANDCharindex('常白班',ShiftName)>0ANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=2ANDStartTime<=AOnDutyANDEndTime<=AOnDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=2ANDStartTime>=AOffDutyANDEndTime<=BOnDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=2ANDStartTime>=BOffDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=3ANDStartTime<=AOnDutyANDEndTime<=AOnDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=3ANDStartTime>=AOffDutyANDEndTime<=BOnDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=3ANDStartTime>=BOffDutyANDEndTime<=COnDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenDegree=3ANDStartTime>=COffDutyANDShiftId>0ANDLeft(AskForLeaveType,1)='0'Then0
WhenShiftId=0ANDLeft(AskForLeaveType,1)='0'Then0
WhenShiftId>0ANDLeft(AskForLeaveType,1)<>'0'ANDLeft(OnDutyType,1)=0Then0
WhenShiftId>0ANDLeft(AskForLeaveType,1)<>'0'ANDLeft(OnDutyType,1)=2ANDAskForLeaveType='出差假'Then0
WhenShiftId>0ANDLeft(AskForLeaveType,1)<>'0'ANDLeft(OnDutyType,1)=2ANDAskForLeaveType='产假'Then0
WhenShiftId=0ANDLeft(AskForLeaveType,1)<>'0'ANDConvert(varchar(10),StartTime,108)='00:00:00'ANDConvert(varchar(10),EndTime,108)='00:30:00'Then0
Else
1
End
From
(
Select
Number
,ChineseName
,DepartmentName
,d.DepartmentCode
,p.ShiftId
,p.ShiftName
,Degree
,AskForLeaveType
,Convert(varchar(10),WorkOnDate,120)as'WorkOnDate'
,StartTime
,EndTime
,AllDay
,SumTotal
,CaseWhenRight(Convert(Varchar(10),WorkOnDate,120),5)IN(selectRight(Convert(Varchar(10),HolidayDate,120),5)FromAttendanceHoliday)THEN'2-公众假上班'ELSE'0-平时上班'ENDAS'OnDutyType'
,CaseWhenLeft(FristBrushDate,1)='1'ANDConvert(varchar(10),AOffDuty,120)>Convert(varchar(10),AOnDuty,120)ThenCAST(Convert(Varchar(11),Dateadd(dd,-1,OnDutyDate),120)+Convert(Varchar(5),AOnDuty,108)ASDateTime)ELSECAST(Convert(Varchar(11),OnDutyDate,120)+Convert(Varchar(5),AOnDuty,108)ASDateTime)EndAS'AOnDuty'
,CaseWhenLeft(FristBrushDate,1)='0'ANDConvert(varchar(10),AOnDuty,120)<Convert(varchar(10),AOffDuty,120)ThenCAST(Convert(Varchar(11),Dateadd(dd,1,OnDutyDate),120)+Convert(Varchar(5),AOffDuty,108)ASDateTime)ELSECAST(Convert(Varchar(11),OnDutyDate,120)+Convert(Varchar(5),AOffDuty,108)ASDateTime)EndAS'AOffDuty'
,CAST(Convert(Varchar(11),OnDutyDate,120)+Convert(Varchar(5),BOnDuty,108)ASDateTime)AS'BOnDuty'
,CAST(Convert(Varchar(11),OnDutyDate,120)+Convert(Varchar(5),BOffDuty,108)ASDateTime)AS'BOffDuty'
,CAST(Convert(Varchar(11),OnDutyDate,120)+Convert(Varchar(5),COnDuty,108)ASDateTime)AS'COnDuty'
,CAST(Convert(Varchar(11),OnDutyDate,120)+Convert(Varchar(5),COffDuty,108)ASDateTime)AS'COffDuty'
From
.DepartmentCode=d.DepartmentCode
.Employeeid=a.Employeeid
INNERJOINAttendanceSpellpona.Employeeid=p.Employeeidanda.WorkOndate=p.OnDutyDate
LEFTJOINAttendanceShiftssonp.Shiftid=s.Shiftid
)tb1
)tb2WhereError=1
UNIONALL
Select
Number
,ChineseName
,DepartmentCode
,DepartmentName
,ShiftId
,ShiftName
,Degree
,AskForLeaveType
,WorkOnDate
,CaseWhenRight(Convert(Varchar(10),WorkOnDate,120),5)IN(selectRight(Convert(Varchar(10),HolidayDate,120),5)fromAttendanceHoliday)THEN'2-公众假上班'ELSE'0-平时上班'ENDAS'OnDutyType'
,StartTime
,EndTime
,AOnDuty
,AOffDuty
,Allday
,SumTotal
,Error
From
(
Select
Number
,ChineseName
,d.DepartmentCode
,DepartmentName
,p.ShiftId
,p.ShiftName
,Degree
,AskForLeaveType
,WorkOnDate
,StartTime
,EndTime
,Sumtotal
,NULLAS'AOnDuty'
,NULLAS'AOffDuty'
,AllDay
,1AS'Error'
From
AttendanceAskForLeavea
LEFTJOINEmployeeseONa.Employeeid=e.Employeeid
LEFTJOINDepartmentsdONe.DepartmentCode=d.DepartmentCode
LEFTJOINAttendanceSpellpONa.Employeeid=p.EmployeeidANDa.WorkOnDate=p.OnDutyDate
LEFTJOINAttendanceShiftssONp.ShiftId=s.ShiftId
Where
Left(IncumbencyStatus,1)<>1
Groupby
Number,ChineseName,d.DepartmentCode,DepartmentName,p.ShiftId,p.ShiftName,Degree,AskForLeaveType,AllDay,WorkOnDate,StartTime,EndTime,Sumtotal
having
Count(1)>1
)tb3
)tb4
对你的代码格式化后发现，还缺少一些语句，你是否粘贴完整了？
读完SQL语句后发现，其实是一个考勤核算的查询语句，是两个大的SQL查询Union ALL的结果
Ⅳ 求一较复杂的SQL
select a.LogID,a.Name,a.成功总数,b.失败总数 from
(select LogID,name,count(*) 成功总数 from table_name where SuccessFlag=1 group by LogID,name) a,
(select LogID,name,count(*) 失败总数 from table_name where SuccessFlag=0 LogID,name) b
where a.LogID=b.LogID
Ⅳ 复杂的SQL 语句
select 职工号,姓名,性别,出生日期 into infor_da from 表 where 婚姻状况='已婚' order by 出生日期 desc
exec master..xp_cmdshell 'bcp 数据库名..infor_da out c:\ma_da.txt -c -t'
也可以这样，直接导出结果，不用放入临时表
exec master..xp_cmdshell 'bcp "select 职工号,姓名,性别,出生日期 into infor_da from 数据库名..表 where 婚姻状况=''已婚'' order by 出生日期 desc" queryout c:\ma_da.txt -c -t'
楼上的方式太不前卫了，还需要开始，运行，输入cmd，用我的方式一劳永逸
Ⅵ 复杂sql语句查询
selectid,name,isnull((selectSUM(金额)fromB表whereid=A表.idandbno=20),0)正常消费,isnull((selectSUM(金额)fromB表whereid=A表.idandbno=30),0)充值,(selecttop1余额fromB表whereid=A表.idorderby时间desc)余额,(selectMAX(时间)fromB表whereid=A表.id)时间
fromA表
这样看一下行不行
Ⅶ 实现几条比较复杂的SQL语句
未经验证，一起探讨
1:
select a.S# from SC a,SC b where a.S#=b.S# and a.C#=b.C# and
b.C#='002' and a.C#='001' and a.score>b.score
group by S#
3:
Select *
FROM SC A
Where EXISTS
(Select COUNT(1)
FROM orders
Where C# = A.C# AND score < A.score
HAVING COUNT(1) < 3)
ORDER BY score DESC
4:
update SC set score=d.avgscore
from
(select a.C#,avg(a.score) as avgscore
from SC a,Teacher b,Course c
where a.C#=c.C# and
b.T#=c.T# and
b.Tname='叶平'
group by a.C#) d
where C#=d.C#
5:
select b.S#,b.Sname from Student b,
(select S# from SC a
where exists
(select * from sc where S#='1001'
and C#=a.C#)
group by S#) c
where b.S#=c.S#
6:
delete from Teacher
truncate table Teacher
Ⅷ 复杂sql语句
你试试这样看行不行：select S_ID,convert(char(10),F_Time,20) as '日期',count(S_ID) as '访问量',
count(S_ID)*S_Price as '收入'
from 表 A,外键表 B
where A.S_ID=B.S_ID and convert(char(10),F_Time,20) between '开始日期' and '结束日期'
group by S_ID,convert(char(10),F_Time,20)
Ⅸ 比较复杂的sql语句
如果你的是ACCESS数据库或者MS SQL数据库，可以使用视图来实现，做起来很容易的。你可以试一下。
以下介绍主要方法：
INNER JOIN 运算
组合两个表中的记录，只要在公共字段之中有相符的值。
语法
FROM table1 INNER JOIN table2 ON table1.field1 compopr table2.field2
INNER JOIN 运算可分为以下几个部分：
部分 说明
table1, table2 记录被组合的表的名称。
field1, field2 被联接的字段的名称。若它们不是由数字构成的，则这些字段必须为相同的数据类型并包含同类数据，但它们无须具有相同的名称。
compopr 任何的关系比较运算子："=," "<," ">," "<=," ">=," 或 "<>."
说明
可以在 FROM 子句中使用INNER JOIN运算。.这是最普通的联接类型。只要在这两个表的公共字段之中有相符值，内部联接将组合两个表中的记录。
可以使用 INNER JOIN 与部门表及员工表选择每一个部门中的全部员工。反之，可以使用 LEFT JOIN或 RIGHT JOIN运算创建 outer join，从而选择所有部门（即使有些并没有员工）或所有员工（即使有些尚未分配到部门）。
若试图联接包含 Memo或 OLE Object数据的字段，会导致错误。
可以联接任何两个相同类型的数值字段。例如，可以联接 AutoNumber和 Long字段，因为它们类型相似。但不能联接 Single 和 Double 类型的字段。
下列示例显示如何在类标识符字段联接类表及产品表：
SELECT CategoryName, ProctName
FROM Categories INNER JOIN Procts
ON Categories.CategoryID = Procts.CategoryID;
在上面的示例中，类标识符是已被联接的字段，但是它并不包含在查询输出中，因它并非被包含在 SELECT 语句之中。在这个示例中，若要包含联接字段，将字段名包含在 SELECT 语句中， Categories.CategoryID.
也可以使用下列语法，在一个 JOIN 语句中链接多个 ON 子句：
SELECT fields
FROM table1 INNER JOIN table2
ON table1.field1 compopr table2.field1 AND
ON table1.field2 compopr table2.field2) OR
ON table1.field3 compopr table2.field3)];
也可以使用下列语法，嵌套 JOIN 语句：
SELECT fields
FROM table1 INNER JOIN
(table2 INNER JOIN [( ]table3
[INNER JOIN [( ]tablex [INNER JOIN ...)]
ON table3.field3 compopr tablex.fieldx)]
ON table2.field2 compopr table3.field3)
ON table1.field1 compopr table2.field2;
在一个 INNER JOIN 之中，可以嵌套 LEFT JOIN 或 RIGHT JOIN，但是在 LEFT JOIN 或 RIGHT JOIN 中不能嵌套 INNER JOIN。
Ⅹ 复杂的sql语句怎么写
1、select * from 表 where year(列名) = year(getdate())-1 and month(列名)= 3 --这个比较容易理解，就不解释了
2、select datepart(wk,dateadd(year,-1,getdate())) -- 去年的今天是去年的第几周
select datepart(wk,dateadd(day,1-day(dateadd(year,-1,getdate())),dateadd(year,-1,getdate()))) -- 去年的本月的1号是去年的第几周
select datepart(wk,dateadd(year,-1,getdate())) - datepart(wk,dateadd(day,1-day(dateadd(year,-1,getdate())),dateadd(year,-1,getdate()))) --上边两者相减就是去年的今天是去年本月的第几周