Related
I have the following in table TABLE
id content
-------------------------------------
1 Hellö world, I äm text
2 ènd there äré many more chars
3 that are speçial in my dat£base
I now need to export these records into HTML files, using bcp:
set #command = 'bcp "select [content] from [TABLE] where [id] = ' +
#id queryout +' + #filename + '.html" -S ' + #instance +
' -c -U ' + #username + ' -P ' + #password"
exec xp_cmdshell #command, no_ouput
To make the output look correct, I need to first replace all special characters with their respective HTML entities (pseudo)
insert into [#temp_html] ..
replace(replace([content], 'ö', 'ö'), 'ä', 'ä')
But by now, I have 30 nested replaces and it's starting to look insane.
After much searching, I found this post which uses a HTML conversion table but it is too advanced for me to understand:
The table does not list the special chars itself as they are in my text (ö, à etc) but UnicodeHex. Do I need to add them to the table to make the conversions that I need?
I am having trouble understanding how to update my script to replace all special chars. Can someone please show me a snippet of (pseudo) code?
One way to do that with a translation table is using a recursive cte to do the replaces, and one more cte to get only the last row of each translated value.
First, create and populate sample table (Please save us this step in your future questions):
DECLARE #T AS TABLE
(
id int,
content nvarchar(100)
)
INSERT INTO #T (id, content) VALUES
(1, 'Hellö world, I äm text'),
(2, 'ènd there äré many more chars'),
(3, 'that are speçial in my dat£base')
Then, create and populate the translation table (I don't know the HTML entities for these chars, so I've just used numbers [plus it's easier to see in the results]). Also, please note that this can be done using yet another cte in the chain.
DECLARE #Translations AS TABLE
(
str nchar(1),
replacement nvarchar(10)
)
INSERT INTO #Translations (str, replacement) VALUES
('ö', '-1-'),
('ä', '-2-'),
('è', '-3-'),
('ä', '-4-'),
('é', '-5-'),
('ç', '-6-'),
('£', '-7-')
Now, the first cte will do the replaces, and the second cte just adds a row_number so that for each id, the last value of lvl will get 1:
;WITH CTETranslations AS
(
SELECT id, content, 1 As lvl
FROM #T
UNION ALL
SELECT id, CAST(REPLACE(content, str, replacement) as nvarchar(100)), lvl+1
FROM CTETranslations
JOIN #Translations
ON content LIKE '%' + str + '%'
), cteNumberedTranslation AS
(
SELECT id, content, ROW_NUMBER() OVER(PARTITION BY Id ORDER BY lvl DESC) rn
FROM CTETranslations
)
Select from the second cte where rn = 1, I've joined the original table to show the source and translation side by side:
SELECT r.id, s.content, r.content
FROM #T s
JOIN cteNumberedTranslation r
ON s.Id = r.Id
WHERE rn = 1
ORDER BY Id
Results:
id content content
1 Hellö world, I äm text Hell-1- world, I -4-m text
2 ènd there äré many more chars -3-nd there -4-r-5- many more chars
3 that are speçial in my dat£base that are spe-6-ial in my dat-7-base
Please note that if your content have more that 100 special chars, you will need to add the maxrecursion 0 hint to the final select:
SELECT r.id, s.content, r.content
FROM #T s
JOIN cteNumberedTranslation r
ON s.Id = r.Id
WHERE rn = 1
ORDER BY Id
OPTION ( MAXRECURSION 0 );
See a live demo on rextester.
Hello kindly help me with this problem. I have this records in my database:
Name Activity DateScheduled
Kevin Meeting 8/1/2016
Kevin Lunch Meeting 8/1/2016
Kevin Client Meeting 8/3/2016
Mark Report 8/2/2016
Mark Occular 8/4/2016
Mark Board Meeting 8/2/2016
What I want the output to be is like this:
Name 8/1/2016 8/2/2016 8/3/2016 8/4/2016
Kevin Meeting null Client Meeting null
Lunch Meeting null null null
Mark null Report null Occular
null Board Meeting null null
So far this is what I have tried but the display is not my desired output:
SELECT name
CASE WHEN (DateScheduled = '08/01/2016') THEN Activity ELSE Null END AS [08/01/2016]
,CASE WHEN (DateScheduled = '08/02/2016') THEN Activity ELSE Null END AS [08/02/2016]
,CASE WHEN (DateScheduled = '08/03/2016') THEN Activity ELSE Null END AS [08/03/2016]
,CASE WHEN (DateScheduled = '08/04/2016') THEN Activity ELSE Null END AS [08/04/2016]
From Schedule
Thanks in advance.
Please check following SQL Pivot query
select
*
from (
select * from EventsTable
) Data
PIVOT (
MAX(Activity)
FOR DateScheduled
IN (
[20160801],[20160802],[20160803],[20160804]
)
) PivotTable
Instead of providing dates manually in Pivot query, you can choose to build dynamic SQL pivot query as shown below
DECLARE #dates nvarchar(max)
SELECT #dates =
STUFF(
(
select distinct ',[' + CAST(cast([date] as date) as varchar(10)) + ']'
FROM [dbo].[DateTable]('20160801','20160831')
for xml path('')
),
1,1,'')
DECLARE #SQL nvarchar(max)
SELECT #SQL = N'
select
*
from (
select * from EventsTable
) Data
PIVOT (
MAX(Activity)
FOR DateScheduled
IN (
' + #dates + '
)
) PivotTable
'
exec sp_executesql #SQL
Please note that before you execute above SQL Select statement, you need to create user defined function to create dates table in SQL . This function enables calendar table dbo.DateTable() between given two dates
Another interesting part of this dynamic SQL pivot is, programmers use SQL concatenation using XML Path . So we concatenate all dates seperated by comma and build our #SQL variable.
At the end we evaluate the #SQL command using sp_ExecuteSQL stored procedure
Output is as follows
I'm trying to merge one table into another (we'll call them Stage and Prod) that controls users and their permissions. My end result should be a single Prod table that has combined each userid's permissions from Stage into Prod. The issue I'm having though is that the tables were designed by an outside vendor and contain multiple pieces of information in one comma-delimited column.
Stage might look like below:
Userid | Permissions
----------------------------------------------------------------
1 | schedule,upload,test,download,admin
2 | test,upload
3 | download
Prod:
Userid | Permissions
----------------------------------------------------------------
1 | test,admin,schedule,download,upload
2 | admin
3 | download,upload
When they're merged, the userids should have their permissions from Stage, combined with those in Prod. However, tackling this when the permissions are a comma-delimited string has me at wit's end.
In the final result below, userid 1's permissions remain unchanged because they are the same in Stage as they are in Prod, merely in a different order.
Userid 2 had his Stage permissions added to his Prod since he did not have those permissions yet.
Userid 3 had his Prod permissions unchanged since his Stage permissions are already included.
Result:
Userid | Permissions
----------------------------------------------------------------
1 | test,admin,schedule,download,upload
2 | admin,test,upload
3 | download,upload
Is there any way to do this? Hopefully this makes some sense, but if there's any more info that might help I'm happy to try to provide it. Thank you for any help at all.
Interestingly enough, this was a topic of discussion on a MSSQLTips blog by Aaron Bertrand. Borrowing his code you can create the Numbers table and string splitting/reassembling functions required to make the following work. If you are planning on doing this often and are stuck with the schema you've shown, this is the way to go.
/*Create Test Data
create table StagePermissions (UserID int, [Permissions] nvarchar(max));
create table ProdPermissions (UserID int, [Permissions] nvarchar(max));
insert StagePermissions values
(1,'schedule,upload,test,download,admin'),
(2,'test,upload'),
(3,'download')
insert ProdPermissions values
(1,'test,admin,schedule,download,upload'),
(2,'admin'),
(3,'download,upload')
*/
select sp.UserID, dbo.ReassembleString(sp.Permissions+','+pp.Permissions,',',N'OriginalOrder') MergedPermissions
from StagePermissions sp
join ProdPermissions pp on pp.UserID=sp.UserID
Taking Steve's test data, but adding:
create table BothPermissions (UserID int, [Permissions] nvarchar(max));
This code will work with a fixed number of possible permissions.
DECLARE #XPermissions TABLE (
UserID int
,XSchedule BIT
,XUpload BIT
,XTest BIT
,XDownload BIT
,XAdmin BIT
)
INSERT INTO #XPermissions
SELECT
ISNULL(sp.UserID,pp.UserID),
CHARINDEX('schedule',sp.[Permissions]) + CHARINDEX('schedule',pp.[Permissions]),
CHARINDEX('upload',sp.[Permissions]) + CHARINDEX('upload',pp.[Permissions]),
CHARINDEX('test',sp.[Permissions]) + CHARINDEX('test',pp.[Permissions]),
CHARINDEX('download',sp.[Permissions]) + CHARINDEX('download',pp.[Permissions]),
CHARINDEX('admin',sp.[Permissions]) + CHARINDEX('admin',pp.[Permissions])
FROM StagePermissions sp
FULL JOIN ProdPermissions pp
ON sp.UserID = pp.UserID
INSERT INTO BothPermissions
SELECT
UserID,
CASE XSchedule WHEN 0 THEN '' ELSE 'schedule ' END +
CASE XUpload WHEN 0 THEN '' ELSE 'upload ' END +
CASE XTest WHEN 0 THEN '' ELSE 'test ' END +
CASE XDownload WHEN 0 THEN '' ELSE 'download ' END +
CASE XAdmin WHEN 0 THEN '' ELSE 'admin' END
FROM #XPermissions
UPDATE BothPermissions
SET [Permissions] = REPLACE(RTRIM([Permissions]),' ',', ')
Now, I was further curious about Steve's answer. I think it is the most robust solution here. However, I wondered how it would perform with a large dataset. I still don't know the answer because I haven't set up the tools necessary to use it. But here's a query that includes some random number generation to populate 10,000 records of each:
SELECT GETDATE()
DECLARE #StagePerms TABLE (
UserID INT IDENTITY
,Perms NVARCHAR(MAX)
)
DECLARE #ProdPerms TABLE (
UserID INT IDENTITY
,Perms NVARCHAR(MAX)
)
DECLARE #Counter INT = 0
DECLARE #XString NVARCHAR(MAX)
WHILE #Counter < 10000
BEGIN
SET #Counter += 1
SET #XString = REPLACE(RTRIM(
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'test ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'admin ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'schedule ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'download ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'upload ' END)
,' ',', ')
INSERT INTO #StagePerms SELECT #XString
SET #XString = REPLACE(RTRIM(
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'test ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'admin ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'schedule ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'download ' END +
CASE ROUND(RAND()-.2,0) WHEN 0 THEN '' ELSE 'upload ' END)
,' ',', ')
INSERT INTO #ProdPerms SELECT #XString
END
SELECT GETDATE()
DECLARE #BothPerms TABLE (
UserID INT
,Perms NVARCHAR(MAX)
)
DECLARE #XPerms TABLE (
UserID int
,XSchedule BIT
,XUpload BIT
,XTest BIT
,XDownload BIT
,XAdmin BIT
)
INSERT INTO #XPerms
SELECT
ISNULL(sp.UserID,pp.UserID),
CHARINDEX('schedule',sp.Perms) + CHARINDEX('schedule',pp.Perms),
CHARINDEX('upload',sp.Perms) + CHARINDEX('upload',pp.Perms),
CHARINDEX('test',sp.Perms) + CHARINDEX('test',pp.Perms),
CHARINDEX('download',sp.Perms) + CHARINDEX('download',pp.Perms),
CHARINDEX('admin',sp.Perms) + CHARINDEX('admin',pp.Perms)
FROM #StagePerms sp
FULL JOIN #ProdPerms pp
ON sp.UserID = pp.UserID
INSERT INTO #BothPerms
SELECT
UserID,
CASE XTest WHEN 0 THEN '' ELSE 'test ' END +
CASE XAdmin WHEN 0 THEN '' ELSE 'admin ' END +
CASE XSchedule WHEN 0 THEN '' ELSE 'schedule ' END +
CASE XDownload WHEN 0 THEN '' ELSE 'download ' END +
CASE XUpload WHEN 0 THEN '' ELSE 'upload ' END
FROM #XPerms
UPDATE #BothPerms
SET Perms = REPLACE(RTRIM(Perms),' ',', ')
SELECT * FROM #BothPerms
SELECT GETDATE()
The random number generation took less than a second; the rest took about 31 seconds. Steve, I'd be interested to see a comparison. Doesn't matter, obviously, if the data doesn't allow for my solution. And I'm sure there's a sweet spot somewhere.
Please make use of the below query. Its working fine in SQL Server 2012.
DECLARE #Stage TABLE (Userid int, Permission Varchar (8000))
DECLARE #Prod TABLE (Userid int, Permission Varchar (8000))
DECLARE #temp TABLE (Userid int, Permission Varchar (8000))
INSERT #Stage
(Userid,Permission)
VALUES
(1,'schedule,upload,test,download,admin'),
(2,'test,upload'),
(3,'download')
INSERT #Prod
(Userid,Permission)
VALUES
(1,'test,admin,schedule,download,upload'),
(2,'admin'),
(3,'download,upload')
-- Execution Part
INSERT INTO #temp
(Userid,Permission)
(
SELECT A.Userid AS Userid,Split.a.value('.', 'VARCHAR(100)') AS Permission FROM
(SELECT Userid,CAST ('<M>' + REPLACE(Permission, ',', '</M><M>') + '</M>' AS XML) AS Permission FROM #Stage A) AS A
CROSS APPLY Permission.nodes ('/M') AS Split(a)
UNION
SELECT A.Userid AS Userid,Split.a.value('.', 'VARCHAR(100)') AS Permission FROM
(SELECT Userid,CAST ('<M>' + REPLACE(Permission, ',', '</M><M>') + '</M>' AS XML) AS Permission FROM #Prod A) AS A
CROSS APPLY Permission.nodes ('/M') AS Split(a)
)
SELECT Userid, Permission =
STUFF((SELECT ', ' + Permission
FROM #temp b
WHERE b.Userid = a.Userid
FOR XML PATH('')), 1, 2, '')
FROM #temp a
GROUP BY Userid
OUTPUT
Userid Permission
1 admin, download, schedule, test, upload
2 admin, test, upload
3 download, upload
You can also use direct support of string splitting introduced in SQL Serv 2016 (in case you started using this engine version already of course :) )
STRING_SPLIT returns single column table...
I have a simple table tblAllUsers which stores simple values like Name,Date Of Birth etc of a UserId.
Another table tblInterest stores the interest(s) of a UserId.Here a user may have any number of Interest and are stored seperately in separate rows :
Create table tblInterest
(
Id int primary key identity,
UserId varchar(10),
InterestId int,
Interest varchar(20)
)
So when i want to display the set of Interest together of a particular user, I use the below query :
DECLARE #listStr VARCHAR(MAX)
SELECT #listStr = COALESCE(#listStr + ', ' ,'') + Interest FROM tblInterest where UserId=#UserId
SELECT #listStr
Now, want to display a users info from both these tables wherein the Interest(S) are displayed in ONE string.
I have tried the below ;
Create proc spPlayersGridview
#listStr VARCHAR(MAX)
as
begin
Select tblAllUsers.Category, tblAllUsers.DOB, tblAllUsers.FirstName, tblAllUsers.LastName, tblAllUsers.City, tblAllUsers.State,
#listStr = COALESCE(#listStr + ', ' ,'') + tblInterest.Interest
from tblAllUsers
INNER JOIN tblInterest
ON tblAllUsers.UserId=tblInterest.UserId
where Category='Player'
end
throws an exception "A SELECT statement that assigns a value to a variable must not be combined with data-retrieval operations."
I had a similar problem a while back, and a bit of SQL STUFF magic helps - Maybe it will work for you as well.
CREATE PROC spPlayersGridview
AS
BEGIN
SELECT
tblAllUsers.Category
, tblAllUsers.DOB
, tblAllUsers.FirstName
, tblAllUsers.LastName
, tblAllUsers.City
, tblAllUsers.State
, listStr = STUFF((
SELECT ',' + tblInterest.Interest
FROM tblInterest
WHERE tblAllUsers.UserId=tblInterest.UserId
ORDER BY tblInterest.Interest
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM tblAllUsers
WHERE Category='Player'
END
Hope it helps - For more reading look at: https://msdn.microsoft.com/en-us/library/ms188043.aspx
I was looking at different ways of writing a stored procedure to return a "page" of data. This was for use with the ASP ObjectDataSource, but it could be considered a more general problem.
The requirement is to return a subset of the data based on the usual paging parameters; startPageIndex and maximumRows, but also a sortBy parameter to allow the data to be sorted. Also there are some parameters passed in to filter the data on various conditions.
One common way to do this seems to be something like this:
[Method 1]
;WITH stuff AS (
SELECT
CASE
WHEN #SortBy = 'Name' THEN ROW_NUMBER() OVER (ORDER BY Name)
WHEN #SortBy = 'Name DESC' THEN ROW_NUMBER() OVER (ORDER BY Name DESC)
WHEN #SortBy = ...
ELSE ROW_NUMBER() OVER (ORDER BY whatever)
END AS Row,
.,
.,
.,
FROM Table1
INNER JOIN Table2 ...
LEFT JOIN Table3 ...
WHERE ... (lots of things to check)
)
SELECT *
FROM stuff
WHERE (Row > #startRowIndex)
AND (Row <= #startRowIndex + #maximumRows OR #maximumRows <= 0)
ORDER BY Row
One problem with this is that it doesn't give the total count and generally we need another stored procedure for that. This second stored procedure has to replicate the parameter list and the complex WHERE clause. Not nice.
One solution is to append an extra column to the final select list, (SELECT COUNT(*) FROM stuff) AS TotalRows. This gives us the total but repeats it for every row in the result set, which is not ideal.
[Method 2]
An interesting alternative is given here (https://web.archive.org/web/20211020111700/https://www.4guysfromrolla.com/articles/032206-1.aspx) using dynamic SQL. He reckons that the performance is better because the CASE statement in the first solution drags things down. Fair enough, and this solution makes it easy to get the totalRows and slap it into an output parameter. But I hate coding dynamic SQL. All that 'bit of SQL ' + STR(#parm1) +' bit more SQL' gubbins.
[Method 3]
The only way I can find to get what I want, without repeating code which would have to be synchronized, and keeping things reasonably readable is to go back to the "old way" of using a table variable:
DECLARE #stuff TABLE (Row INT, ...)
INSERT INTO #stuff
SELECT
CASE
WHEN #SortBy = 'Name' THEN ROW_NUMBER() OVER (ORDER BY Name)
WHEN #SortBy = 'Name DESC' THEN ROW_NUMBER() OVER (ORDER BY Name DESC)
WHEN #SortBy = ...
ELSE ROW_NUMBER() OVER (ORDER BY whatever)
END AS Row,
.,
.,
.,
FROM Table1
INNER JOIN Table2 ...
LEFT JOIN Table3 ...
WHERE ... (lots of things to check)
SELECT *
FROM stuff
WHERE (Row > #startRowIndex)
AND (Row <= #startRowIndex + #maximumRows OR #maximumRows <= 0)
ORDER BY Row
(Or a similar method using an IDENTITY column on the table variable).
Here I can just add a SELECT COUNT on the table variable to get the totalRows and put it into an output parameter.
I did some tests and with a fairly simple version of the query (no sortBy and no filter), method 1 seems to come up on top (almost twice as quick as the other 2). Then I decided to test probably I needed the complexity and I needed the SQL to be in stored procedures. With this I get method 1 taking nearly twice as long as the other 2 methods. Which seems strange.
Is there any good reason why I shouldn't spurn CTEs and stick with method 3?
UPDATE - 15 March 2012
I tried adapting Method 1 to dump the page from the CTE into a temporary table so that I could extract the TotalRows and then select just the relevant columns for the resultset. This seemed to add significantly to the time (more than I expected). I should add that I'm running this on a laptop with SQL Server Express 2008 (all that I have available) but still the comparison should be valid.
I looked again at the dynamic SQL method. It turns out I wasn't really doing it properly (just concatenating strings together). I set it up as in the documentation for sp_executesql (with a parameter description string and parameter list) and it's much more readable. Also this method runs fastest in my environment. Why that should be still baffles me, but I guess the answer is hinted at in Hogan's comment.
I would most likely split the #SortBy argument into two, #SortColumn and #SortDirection, and use them like this:
…
ROW_NUMBER() OVER (
ORDER BY CASE #SortColumn
WHEN 'Name' THEN Name
WHEN 'OtherName' THEN OtherName
…
END *
CASE #SortDirection
WHEN 'DESC' THEN -1
ELSE 1
END
) AS Row
…
And this is how the TotalRows column could be defined (in the main select):
…
COUNT(*) OVER () AS TotalRows
…
I would definitely want to do a combination of a temp table and NTILE for this sort of approach.
The temp table will allow you to do your complicated series of conditions just once. Because you're only storing the pieces you care about, it also means that when you start doing selects against it further in the procedure, it should have a smaller overall memory usage than if you ran the condition multiple times.
I like NTILE() for this better than ROW_NUMBER() because it's doing the work you're trying to accomplish for you, rather than having additional where conditions to worry about.
The example below is one based off a similar query I'm using as part of a research query; I have an ID I can use that I know will be unique in the results. Using an ID that was an identity column would also be appropriate here, though.
--DECLARES here would be stored procedure parameters
declare #pagesize int, #sortby varchar(25), #page int = 1;
--Create temp with all relevant columns; ID here could be an identity PK to help with paging query below
create table #temp (id int not null primary key clustered, status varchar(50), lastname varchar(100), startdate datetime);
--Insert into #temp based off of your complex conditions, but with no attempt at paging
insert into #temp
(id, status, lastname, startdate)
select id, status, lastname, startdate
from Table1 ...etc.
where ...complicated conditions
SET #pagesize = 50;
SET #page = 5;--OR CAST(#startRowIndex/#pagesize as int)+1
SET #sortby = 'name';
--Only use the id and count to use NTILE
;with paging(id, pagenum, totalrows) as
(
select id,
NTILE((SELECT COUNT(*) cnt FROM #temp)/#pagesize) OVER(ORDER BY CASE WHEN #sortby = 'NAME' THEN lastname ELSE convert(varchar(10), startdate, 112) END),
cnt
FROM #temp
cross apply (SELECT COUNT(*) cnt FROM #temp) total
)
--Use the id to join back to main select
SELECT *
FROM paging
JOIN #temp ON paging.id = #temp.id
WHERE paging.pagenum = #page
--Don't need the drop in the procedure, included here for rerunnability
drop table #temp;
I generally prefer temp tables over table variables in this scenario, largely so that there are definite statistics on the result set you have. (Search for temp table vs table variable and you'll find plenty of examples as to why)
Dynamic SQL would be most useful for handling the sorting method. Using my example, you could do the main query in dynamic SQL and only pull the sort method you want to pull into the OVER().
The example above also does the total in each row of the return set, which as you mentioned was not ideal. You could, instead, have a #totalrows output variable in your procedure and pull it as well as the result set. That would save you the CROSS APPLY that I'm doing above in the paging CTE.
I would create one procedure to stage, sort, and paginate (using NTILE()) a staging table; and a second procedure to retrieve by page. This way you don't have to run the entire main query for each page.
This example queries AdventureWorks.HumanResources.Employee:
--------------------------------------------------------------------------
create procedure dbo.EmployeesByMartialStatus
#MaritalStatus nchar(1)
, #sort varchar(20)
as
-- Init staging table
if exists(
select 1 from sys.objects o
inner join sys.schemas s on s.schema_id=o.schema_id
and s.name='Staging'
and o.name='EmployeesByMartialStatus'
where type='U'
)
drop table Staging.EmployeesByMartialStatus;
-- Populate staging table with sort value
with s as (
select *
, sr=ROW_NUMBER()over(order by case #sort
when 'NationalIDNumber' then NationalIDNumber
when 'ManagerID' then ManagerID
-- plus any other sort conditions
else EmployeeID end)
from AdventureWorks.HumanResources.Employee
where MaritalStatus=#MaritalStatus
)
select *
into #temp
from s;
-- And now pages
declare #RowCount int; select #rowCount=COUNT(*) from #temp;
declare #PageCount int=ceiling(#rowCount/20); --assuming 20 lines/page
select *
, Page=NTILE(#PageCount)over(order by sr)
into Staging.EmployeesByMartialStatus
from #temp;
go
--------------------------------------------------------------------------
-- procedure to retrieve selected pages
create procedure EmployeesByMartialStatus_GetPage
#page int
as
declare #MaxPage int;
select #MaxPage=MAX(Page) from Staging.EmployeesByMartialStatus;
set #page=case when #page not between 1 and #MaxPage then 1 else #page end;
select EmployeeID,NationalIDNumber,ContactID,LoginID,ManagerID
, Title,BirthDate,MaritalStatus,Gender,HireDate,SalariedFlag,VacationHours,SickLeaveHours
, CurrentFlag,rowguid,ModifiedDate
from Staging.EmployeesByMartialStatus
where Page=#page
GO
--------------------------------------------------------------------------
-- Usage
-- Load staging
exec dbo.EmployeesByMartialStatus 'M','NationalIDNumber';
-- Get pages 1 through n
exec dbo.EmployeesByMartialStatus_GetPage 1;
exec dbo.EmployeesByMartialStatus_GetPage 2;
-- ...etc (this would actually be a foreach loop, but that detail is omitted for brevity)
GO
I use this method of using EXEC():
-- SP parameters:
-- #query: Your query as an input parameter
-- #maximumRows: As number of rows per page
-- #startPageIndex: As number of page to filter
-- #sortBy: As a field name or field names with supporting DESC keyword
DECLARE #query nvarchar(max) = 'SELECT * FROM sys.Objects',
#maximumRows int = 8,
#startPageIndex int = 3,
#sortBy as nvarchar(100) = 'name Desc'
SET #query = ';WITH CTE AS (' + #query + ')' +
'SELECT *, (dt.pagingRowNo - 1) / ' + CAST(#maximumRows as nvarchar(10)) + ' + 1 As pagingPageNo' +
', pagingCountRow / ' + CAST(#maximumRows as nvarchar(10)) + ' As pagingCountPage ' +
', (dt.pagingRowNo - 1) % ' + CAST(#maximumRows as nvarchar(10)) + ' + 1 As pagingRowInPage ' +
'FROM ( SELECT *, ROW_NUMBER() OVER (ORDER BY ' + #sortBy + ') As pagingRowNo, COUNT(*) OVER () AS pagingCountRow ' +
'FROM CTE) dt ' +
'WHERE (dt.pagingRowNo - 1) / ' + CAST(#maximumRows as nvarchar(10)) + ' + 1 = ' + CAST(#startPageIndex as nvarchar(10))
EXEC(#query)
At result-set after query result columns:
Note:
I add some extra columns that you can remove them:
pagingRowNo : The row number
pagingCountRow : The total number of rows
pagingPageNo : The current page number
pagingCountPage : The total number of pages
pagingRowInPage : The row number that started with 1 in this page