SQL小白点滴(一)含”聚合函数“等

0、http://www.mssqltips.com/tip.asp?tip=1294

This is VERY helpful, thanks a lot

During the Data Migration of last release, first I use “View Dependencies” , but it doesn’t cover all for omit those behind dynamic SQL.

 

SELECT distinct so.name

FROM syscomments sc

INNER JOIN sysobjects so ON sc.id = so.id

WHERE charindex('t_swrequests', text) > 0

 

select distinct specific_name from information_schema.routines

where lower(routine_definition) like '%t_swrequests%'

1、

代码
ALTER PROCEDURE [dbo].[Usp_processswgrouprequest] @GrpSWRequestId INT 
AS 
  
DECLARE @UpdateTime DATETIME 
  
DECLARE @Count INT 
  
DECLARE @CompanyId INT 
  
DECLARE @SWRequestStatusId INT 
  
DECLARE @SWApprovalStatusPending INT
  
DECLARE @SWRequestId INT 
  
DECLARE @Err INT 

  
SELECT @UpdateTime = Getdate() 

  
SET @Err = 0 
  
SET @SWRequestStatusId = 1 -- RequestStatusPendingApproval 
  SET @SWApprovalStatusPending = 2 
  
SET @Count=0 

  
DECLARE curSWRequest CURSOR FOR 
    
SELECT DISTINCT V_Users.CompanyId 
    
FROM   T_SWRequestUsers 
           
INNER JOIN V_Users 
             
ON T_SWRequestUsers.UserId = V_Users.UserId 
    
WHERE  ( T_SWRequestUsers.SWRequestId = @GrpSWRequestId ) 

  
BEGIN TRANSACTION 

  
OPEN curSWRequest 

  
FETCH NEXT FROM curSWRequest INTO @CompanyId 

  
WHILE ( @@FETCH_STATUS = 0 ) 
    
BEGIN 
        
-- insert the SWRequest for each company 
        -- PRINT @CompanyId 
        SET @UpdateTime = Dateadd(ms, @CountGetdate()) 

        
INSERT INTO T_SWRequests 
                    (RequesterId, 
                     RequestDate, 
                     SWRequestStatusId, 
                     Routed, 
                     CompanyId, 
                     GroupId, 
                     ContactFirstName, 
                     ContactLastName, 
                     ContactEmail, 
                     CCEmails, 
                     OtherInformation, 
                     UpdateBy, 
                     UpdateTime, 
                     ParentSWRequestId, 
                     NotifyUsers) 
        
SELECT RequesterId, 
               
@UpdateTime
               
@SWRequestStatusId
               
'Y'
               
@CompanyId
               
NULL
               ContactFirstName, 
               ContactLastName, 
               ContactEmail, 
               CCEmails, 
               OtherInformation, 
               UpdateBy, 
               
@UpdateTime
               
@GrpSWRequestId
               NotifyUsers 
        
FROM   T_SWRequests 
        
WHERE  SWRequestId = @GrpSWRequestId 

        
IF @@ERROR != 0 
          
BEGIN 
              
ROLLBACK WORK 

              
RAISERROR('usp_ProcessGroupRequest:Error In Inserting record to T_SWRequest. Transaction is aborted.'
                        
16
                        
1

              
GOTO end_program 
          
END 

        
SET @SWRequestId = @@IDENTITY 

        
-- PRINT @SWRequestId 
        -- Insert Users 
        INSERT INTO T_SWRequestUsers 
                    (SWRequestId, 
                     UserId, 
                     UpdateBy, 
                     UpdateTime) 
        
SELECT @SWRequestId
               T_SWRequestUsers.UserId, 
               T_SWRequestUsers.UpdateBy, 
               
@UpdateTime 
        
FROM   T_SWRequestUsers 
               
INNER JOIN V_Users 
                 
ON T_SWRequestUsers.UserId = V_Users.UserId 
        
WHERE  ( T_SWRequestUsers.SWRequestId = @GrpSWRequestId ) 
               
AND V_Users.CompanyId = @CompanyId 

        
IF @@ERROR != 0 
          
BEGIN 
              
ROLLBACK WORK 

              
RAISERROR('usp_ProcessGroupRequest:Error In Inserting record to T_SWRequestUsers. Transaction is aborted.'
                        
16
                        
1

              
GOTO end_program 
          
END 

        
-- Insert SLAs 
        INSERT INTO T_SWRequestSLAs 
                    (SWRequestId, 
                     SLAId, 
                     UpdateBy, 
                     UpdateTime) 
        
SELECT DISTINCT @SWRequestId
                        T_SWRequestSLAs.SLAId, 
                        T_SWRequestSLAs.UpdateBy, 
                        
@UpdateTime 
        
FROM   T_SWRequestSLAs 
               
INNER JOIN T_GroupSLA 
                 
ON T_SWRequestSLAs.SLAId = T_GroupSLA.SLAId 
        
WHERE  ( T_SWRequestSLAs.SWRequestId = @GrpSWRequestId ) 
               
AND T_GroupSLA.CompanyId = @CompanyId 

        
IF @@ERROR != 0 
          
BEGIN 
              
ROLLBACK WORK 

              
RAISERROR('usp_ProcessGroupRequest:Error In Inserting record to T_SWRequestSLA. Transaction is aborted.'
                        
16
                        
1

              
GOTO end_program 
          
END 

        
-- Insert Softwares 
        INSERT INTO T_RequestSWs 
                    (SWRequestId, 
                     DocumentId, 
                     SWApprovalStatusId, 
                     RequestedBy, 
                     UpdateBy, 
                     UpdateTime) 
        
SELECT @SWRequestId
               DocumentId, 
               
@SWApprovalStatusPending
               RequestedBy, 
               UpdateBy, 
               
@UpdateTime 
        
FROM   T_RequestSWs 
        
WHERE  SWRequestId = @GrpSWRequestId 

        
IF @@ERROR != 0 
          
BEGIN 
              
ROLLBACK WORK 

              
RAISERROR('usp_ProcessGroupRequest:Error In Inserting record to T_RequestSWs. Transaction is aborted.'
                        
16
                        
1

              
GOTO end_program 
          
END 

        
SET @Count = @Count + 1 

        
FETCH NEXT FROM curSWRequest INTO @CompanyId 
    
END 

  
UPDATE T_SWRequests 
  
SET    Routed = 'Y'
         SWRequestStatusId 
= 2 
  
WHERE  SWRequestId = @GrpSWRequestId 

  
COMMIT WORK 

  END_PROGRAM: 

  
CLOSE curSWRequest 

  
DEALLOCATE curSWRequest 

  
RETURN 
2、declare @A as varchar(1000) SET @A = replace(( select top 10 lastname as 'data()' from t_users for xml path('')), ' ',';') print @A
但是这个replace是替换所有,这个不是我想要的,除非是ID串,名称串就做不到了...究竟要如何做MSSQL的聚合呢?
[11:29:08 AM] James: http://databases.aspfaq.com/database/how-do-i-find-a-stored-procedure-containing-text.html
CREATE TABLE [dbo].[Table1](
    
[id] [int] NULL,
    
[name] [varchar](50NULL,
    
[school] [varchar](50NULL,
    
[year] [int] NULL,
    
[score] [int] NULL
ON [PRIMARY]

GO

INSERT INTO table1 (id,name,school,year,score) VALUES (1,'Jerra','sc1',    2002,  100)
INSERT INTO table1 (id,name,school,year,score) VALUES (2,'Jerra','sc2',    2004,  60)
INSERT INTO table1 (id,name,school,year,score) VALUES (3,'Tom','sc3',    2002,  40)
INSERT INTO table1 (id,name,school,year,score) VALUES (4,'Jerry','sc4',    2004,  90)
INSERT INTO table1 (id,name,school,year,score) VALUES (5,'Tom','sc5',    2005,  80)
GO

select  name,
        
replace(( select    school as 'data()'
                  
from      table1
                
for
                  xml path(
'')
                ), 
' ''/'as school,
        
replace(( select    year as 'data()'
                  
from      table1
                
for
                  xml path(
'')
                ), 
' ''/'as year,
        
sum(score) as score
from    table1
group by name

有一个QQ群友提供的方法,解决了空格问题!


UPDATE table1 SET school=REPLACE(school,'sc','sc ')

GO

SELECT *
FROM 
(
    
SELECT name,SUM(score) AS score FROM table1 GROUP BY name
AS A
OUTER APPLY
(
SELECT school = STUFF(REPLACE((REPLACE((SELECT school FROM dbo.table1 N WHERE NAME = A.name FOR XML AUTO),'<N school="','/')),'"/>',''),1,1,'')
,
[year] = STUFF(REPLACE((REPLACE((SELECT [year] FROM dbo.table1 N WHERE NAME = A.name FOR XML AUTO),'<N year="','/')),'"/>',''),1,1,'')

) N

3、
SELECT ROUTINE_NAME, ROUTINE_DEFINITION 
    FROM INFORMATION_SCHEMA.ROUTINES 
    WHERE ROUTINE_DEFINITION LIKE '% in (@%)%' 
    AND ROUTINE_TYPE='PROCEDURE'

4、How to use id comma-seperated string in static sql not dynamic sql?
4.1
--- converts ntext list to individual item in a  table 
ALTER FUNCTION [dbo].[udf_TxtList2Tbl] (@list NTEXT,@separator CHAR(1))
      
RETURNS @tbl TABLE (element NVARCHAR(300)  NOT NULLAS
   
BEGIN
      
DECLARE         @pos      INT,
                     
@textpos  INT,
                      
@nextpos  INT,
                      
@str      NVARCHAR(4000),
                      
@tmpstr    NVARCHAR(4000),
                      
@leftover  NVARCHAR(4000)

      
SET @textpos = 1
      
SET @leftover = ''

      
WHILE @textpos <= DATALENGTH(@list/ 2
      
BEGIN
         
SET @nextpos =  @textpos + 4000 - DATALENGTH(@leftover/ 2
         
SET @tmpstr = LTRIM(@leftover + SUBSTRING(@list@textpos@nextpos - 1))
         
SET @textpos = @nextpos
         
SET @pos = CHARINDEX(@separator@tmpstr)

         
WHILE @pos > 0
         
BEGIN
            
SET @str = substring(@tmpstr1@pos - 1)
            
INSERT @tbl (element) VALUES(RTRIM(LTRIM(@str)))
            
SET @tmpstr = LTRIM(SUBSTRING(@tmpstr@pos + 1LEN(@tmpstr)))
            
SET @pos = CHARINDEX(@separator@tmpstr)
         
END

         
SET @leftover = @tmpstr
      
END
     
      
SET @leftover = LTRIM(RTRIM(@leftover))
      
IF @leftover <> ''
         
INSERT @tbl (element) VALUES(@leftover)

      
RETURN

   
END

 AND EXISTS (SELECT ST.element FROM udf_TxtList2Tbl(@SoftwareIds,',') ST WHERE ST.element = S.DocumentId )


4.2 

   WHERE CHARINDEX(',' + convert(varchar(max),D.DocumentId )+ ',', ',' + @DocumentIDs + ',') > 0

 SELECT * FROM tbname WHERE CHARINDEX(','+RTRIM(fdname)+',',','+@idlist+',')>0 

SELECT * FROM tbname WHERE PATINDEX('%,'+RTRIM(fdname)+',%',','+@idlist+',')>0
SELECT * FROM tbname WHERE ','+@idlist+',' LIKE '%,'+RTRIM(fdname)+',%'

5、

WHERE p.[Name] LIKE ISNULL('%'+@ProductName+'%', p.[Name])

小白的我觉得它很有趣 ...

6、小白的我觉得shen的这套思路很赞 ...

update T_ProductPLMs
    
set IsPrimary = 'Y'
    
from (Select ProductId from T_ProductPLMs group by ProductId having sum(case IsPrimary when 'Y' then 1 else 0 end= 0) a
    
where T_ProductPLMs.PLMId=@NewPLMId and T_ProductPLMs.ProductId = a.ProductId    
愿一路奔跑不退缩,到目前一直从事.Net的B/S,C/S企业应用研发
原文地址:https://www.cnblogs.com/syveen/p/1704461.html