Convert lag, Partition by in SQL to LINQ Lambda - c#

I have an existing table #temp with below format
#temp(id bigint, pid varchar(50), pdt date)
How do i convert the below SQL Query to Linq Lambda
create table #tempResultSet
(
id bigint,
pid varchar(20),
pdt date,
pdt1 date,
daydiff as datediff(day,pdt,pdt1)
)
insert into #tempResultSet
SELECT id, pid, pdt,
isnull(lead(pdt) OVER (PARTITION BY pid ORDER BY pdt),
lag(pdt) OVER (PARTITION BY pid ORDER BY pdt)) pdt1
FROM #temp

Assuming #temp and #tempResultSet are both configured properly, you can use linq2db's support for window functions to get what you want.
Below is a snippet of what I believe would be the correct syntax in this case, though I haven't tested it, and I don't have experience using linq2db. I hope it helps:
var q =
from temp in dbContext.Temp
select new TempResultSet
{
Id = temp.id,
Pid = temp.pid,
Pdt = temp.pdt,
IsNull = Sql.Ext.Lead(temp.pdt)
.Over()
.PartitionBy(temp.pid)
.OrderBy(temp.pdt)
.ToValue() is null,
Pdt1 = Sql.Ext.Lag(temp.pdt)
.Over()
.PartitionBy(temp.pid)
.OrderBy(temp.pdt)
};
dbContext.AddRange(q.ToArray());
dbContext.SaveChanges();

Related

(Additional) EF can't infer return schema from stored procedure selecting from a #temp table

I have a similar problem as described in
EF can't infer return schema from Stored Procedure selecting from a #temp table
and I have created my stored procedure solution based on the solution described above BUT I am still getting a similar EF error and I really don't know why or understand how I can fix it.
A member of the type, 'rowNum', does not have a corresponding column in the data reader with the same name.
My specific error:
The data reader is incompatible with the specified 'TestModel.sp_SoInfoDocs_Result'. A member of the type, 'rowNum', does not have a corresponding column in the data reader with the same name.
My stored procedure:
ALTER PROCEDURE [dbo].[sp_SoInfoDocs]
#searchText nvarchar(200),
#PageNumber int,
#PageSize int
AS
BEGIN
IF 1 = 2
BEGIN
SELECT
cast(null as int ) as rowNum
,cast(null as text) as serverName
,cast(null as text) as jobName
,cast(null as DATETIME) as oDate
,cast(null as int) as runCount
,cast(null as nvarchar(10)) as orderID
,cast(null as text) as applicationName
,cast(null as text) as memberName
,cast(null as text) as nodeID
,cast(null as nvarchar(10)) as endStatus
,cast(null as int) as returnCode
,cast(null as DATETIME) as startTime
,cast(null as DATETIME) as endTime
,cast(null as nvarchar(50)) as status
,cast(null as text) as owner
,cast(null as bit) as existsNote
WHERE
1 = 2
END
DECLARE #LowerLimit int;
SET #LowerLimit = (#PageNumber - 1) * #PageSize;
DECLARE #UpperLimit int;
SET #UpperLimit = #PageNumber * #PageSize;
PRINT CAST (#LowerLimit as varchar)
PRINT CAST (#UpperLimit as varchar)
SELECT ROW_NUMBER() over (order by Expr1) as rowNum, *
into #temp
from (
SELECT dbo.SOInfo.jobName, dbo.SOInfo.nodeID, dbo.SOInfo.nodeGroup, dbo.SOInfo.endStatus, dbo.SOInfo.returnCode, dbo.SOInfo.startTime, dbo.SOInfo.endTime,
dbo.SOInfo.oDate, dbo.SOInfo.orderID, dbo.SOInfo.status, dbo.SOInfo.runCount, dbo.SOInfo.owner, dbo.SOInfo.cyclic, dbo.SOInfo.soInfoID, dbo.SOInfo.docInfoID,
dbo.SOInfo.existsNote, dbo.SOInfo.noSysout, dbo.serverInfo.serverName, dbo.Groups.label AS applicationName, Groups_1.label AS memberName,
Groups_2.label AS groupName, Groups_3.label AS scheduleTableName, dbo.SOInfo.serverInfoID, dbo.SOInfo.applicationID, dbo.SOInfo.groupID,
dbo.SOInfo.memberID, dbo.SOInfo.scheduleTableID, dbo.docFile.docFileID, dbo.docInfo.docInfoID AS Expr1, dbo.docFile.docFileObject
FROM dbo.SOInfo INNER JOIN
dbo.serverInfo ON dbo.SOInfo.serverInfoID = dbo.serverInfo.serverInfoID INNER JOIN
dbo.docInfo ON dbo.SOInfo.docInfoID = dbo.docInfo.docInfoID INNER JOIN
dbo.docFile ON dbo.docInfo.docFileID = dbo.docFile.docFileID LEFT OUTER JOIN
dbo.Groups AS Groups_3 ON dbo.SOInfo.scheduleTableID = Groups_3.ID LEFT OUTER JOIN
dbo.Groups AS Groups_1 ON dbo.SOInfo.memberID = Groups_1.ID LEFT OUTER JOIN
dbo.Groups AS Groups_2 ON dbo.SOInfo.groupID = Groups_2.ID LEFT OUTER JOIN
dbo.Groups ON dbo.SOInfo.applicationID = dbo.Groups.ID
WHERE CONTAINS (docfileObject,#searchText)
) tbl
SELECT Count(1) FROM #temp
SELECT rowNum, serverName, jobName ,oDate,runCount,orderID,applicationName,memberName,nodeID, endStatus, returnCode,startTime,endTime,status,owner,existsNote
FROM #temp WHERE rowNum > #LowerLimit AND rowNum <= #UpperLimit
END
My overall goals are:
search through clustered indexed table (docInfo) and find all rows that contain a specific search string value
at the same time capture metadata from other tables associated with each docInfo object
The results of actions (1) and (2) above are written to a #temp table to which I then add a rowNum column to enable me to introduce paging i.e.
introduce paging for the number of metadata results that can be returned at any one time, based on supplied PageNumber and PageSize variables.
What does work
I am able to successfully create the stored procedure.
Within SSMS I am able to successfully execute the stored procedure and it delivers the results I expect, here's an example
Within EF I have been able to update and import the stored procedure by updating from database
Within EF I am then able to see the Function Imports and can see the Mapping
Within ED I am then able to see the generated complex types
I use the following code to call the process
using (TestEntities context = new TestEntities())
{
List<sp_SoInfoDocs_Result> lst = context.sp_SoInfoDocs(searchText, 1, 10).ToList();
}
I compile and run my solution and get the following error from EF
'System.Data.Entity.Core.EntityCommandExecutionException' occurred in EntityFramework.SqlServer.dll
Additional information: The data reader is incompatible with the specified 'SysviewModel.sp_SoInfoDocs_Result'. A member of the type, 'rowNum', does not have a corresponding column in the data reader with the same name.
I am very much a novice / basic user when it comes to both SSMS / SQL and EF, this has stretched me as far as I understand / can go and I really don't know where to turn to next in order to resolve this problem.
I've searched extensively through SO and can see others who have had similar problems and have tried the solutions suggested but nothing seems to work for me.
I really would be very very grateful to anyone who could help me understand
what is it that is wrong / I've done wrong?
is there a better approach to achieve what I need?
ideas as to how I can fix this.
Thanks in advance
The solution I have found is to use SQL temporary variables in stead of using temporary tables which then enables me to expose the table columns via my final SQL Select statement and then consume them as meta data in EF using the "Add Function Imports" function.
Here's an example of my successfully working sp.
USE [TestDB]
GO
/****** Object: StoredProcedure [dbo].[sp_SoInfoDocs_Archive] Script Date: 09/07/2015 10:35:43 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[sp_SoInfoDocs_Archive]
#searchText nvarchar(200),
#PageNumber int,
#PageSize int,
#out int = 0 output
AS
BEGIN
DECLARE #LowerLimit int;
SET #LowerLimit = (#PageNumber - 1) * #PageSize;
DECLARE #UpperLimit int;
SET #UpperLimit = #PageNumber * #PageSize;
-- Create temporary column variables
Declare #temp TABLE
(
rowNum INT,
jobName text,
nodeID nvarchar(50),
nodeGroup text,
endStatus nvarchar(10),
returnCode int,
startTime datetime,
endTime datetime,
oDate smalldatetime,
orderID nvarchar(10),
status nvarchar(50),
runCount int,
owner text,
cyclic text,
soInfoID int,
docInfoID int,
existsNote bit,
noSysout bit,
serverName varchar(256),
applicationName nvarchar(255),
memberName nvarchar(255),
groupName nvarchar(255),
scheduleTableName nvarchar(255),
serverInfoID int,
applicationID int,
groupID int,
memberID int,
scheduleTableID int,
docFileID int,
Expr1 int,
docFileObject varbinary(MAX)
)
INSERT INTO #temp
SELECT ROW_NUMBER() over (order by Expr1) as rowNum, *
from (
SELECT dbo.SOInfoArchive.jobName,
dbo.SOInfoArchive.nodeID,
dbo.SOInfoArchive.nodeGroup,
dbo.SOInfoArchive.endStatus,
dbo.SOInfoArchive.returnCode,
dbo.SOInfoArchive.startTime,
dbo.SOInfoArchive.endTime,
dbo.SOInfoArchive.oDate,
dbo.SOInfoArchive.orderID,
dbo.SOInfoArchive.status,
dbo.SOInfoArchive.runCount,
dbo.SOInfoArchive.owner,
dbo.SOInfoArchive.cyclic,
dbo.SOInfoArchive.soInfoID,
dbo.SOInfoArchive.docInfoID,
dbo.SOInfoArchive.existsNote,
dbo.SOInfoArchive.noSysout,
dbo.serverInfo.serverName,
dbo.Groups.label AS applicationName,
Groups_1.label AS memberName,
Groups_2.label AS groupName,
Groups_3.label AS scheduleTableName,
dbo.SOInfoArchive.serverInfoID,
dbo.SOInfoArchive.applicationID,
dbo.SOInfoArchive.groupID,
dbo.SOInfoArchive.memberID,
dbo.SOInfoArchive.scheduleTableID,
dbo.docFile.docFileID,
dbo.docInfo.docInfoID AS Expr1,
dbo.docFile.docFileObject
FROM dbo.SOInfoArchive INNER JOIN
dbo.serverInfo ON dbo.SOInfoArchive.serverInfoID = dbo.serverInfo.serverInfoID INNER JOIN
dbo.docInfo ON dbo.SOInfoArchive.docInfoID = dbo.docInfo.docInfoID INNER JOIN
dbo.docFile ON dbo.docInfo.docFileID = dbo.docFile.docFileID LEFT OUTER JOIN
dbo.Groups AS Groups_3 ON dbo.SOInfoArchive.scheduleTableID = Groups_3.ID LEFT OUTER JOIN
dbo.Groups AS Groups_1 ON dbo.SOInfoArchive.memberID = Groups_1.ID LEFT OUTER JOIN
dbo.Groups AS Groups_2 ON dbo.SOInfoArchive.groupID = Groups_2.ID LEFT OUTER JOIN
dbo.Groups ON dbo.SOInfoArchive.applicationID = dbo.Groups.ID
WHERE CONTAINS (docfileObject,#searchText)
) tbl
-- Select enables me to consume the following columns as meta data in EF
SELECT rowNum,
serverName,
jobName ,
oDate,
runCount,
orderID,
applicationName,
memberName,
nodeID,
endStatus,
returnCode,
startTime,
endTime,
status,
owner,
existsNote,
docFileID
FROM #temp WHERE rowNum > #LowerLimit AND rowNum <= #UpperLimit
END
So to recap, I can now
1) Import the stored procedure into my EDMX.
2) The "Add Function Import" successfully creates
a) sp_SoInfoDocs Function Imports
b) sp_SoInfoDocs Complex Types
I can now successfully call my stored procedure as follows
using (TestEntities context = new TestEntities())
{
string searchText = "rem";
ObjectParameter total = new ObjectParameter("out",typeof(int));
List<sp_SoInfoDocs_Result> lst = context.sp_SoInfoDocs(searchText, 1, 10, total).ToList();
foreach (var item in lst)
{
Console.WriteLine(item.jobName + " " + item.oDate + " " + item.serverName + " " + item.startTime + " " + item.endTime);
}
Console.ReadLine();
}
And an example of the results returned.
I am now successfully using the basis of this process to import and display the metadata in a dynamically created HTML table in my View.
If anyone else is experiencing similar problems and I have neglected to explain fully why I adopted this solution and how I made it work ~ then please feel free to P.M. me and I'll do my best to explain.
Why to use temporary table or table variable at all. Table variables has many performance drawbacks like:
Table variables does not have distribution statistics, they will not
trigger recompiles. Therefore, in many cases, the optimizer will build
a query plan on the assumption that the table variable has no rows.
For this reason, you should be cautious about using a table variable
if you expect a larger number of rows (greater than 100). Temp tables
may be a better solution in this case. Alternatively, for queries that
join the table variable with other tables, use the RECOMPILE hint,
which will cause the optimizer to use the correct cardinatlity for the
table variable.
table variables are not supported in the SQL Server optimizer's
cost-based reasoning model. Therefore, they should not be used when
cost-based choices are required to achieve an efficient query plan.
Temporary tables are preferred when cost-based choices are required.
This typically includes queries with joins, parallelism decisions, and
index selection choices.
Queries that modify table variables do not generate parallel query
execution plans. Performance can be affected when very large table
variables, or table variables in complex queries, are modified. In
these situations, consider using temporary tables instead. For more
information, see CREATE TABLE (Transact-SQL). Queries that read table
variables without modifying them can still be parallelized.
Use simple CTE:
ALTER PROCEDURE [dbo].[sp_SoInfoDocs_Archive]
#searchText NVARCHAR(200),
#PageNumber INT,
#PageSize INT,
#out INT = 0 OUTPUT
AS
BEGIN
SET NOCOUNT ON;
DECLARE #LowerLimit INT = (#PageNumber - 1) * #PageSize;
DECLARE #UpperLimit INT = #PageNumber * #PageSize;
;WITH cte AS
(
SELECT
dbo.SOInfoArchive.jobName,
dbo.SOInfoArchive.nodeID,
dbo.SOInfoArchive.nodeGroup,
dbo.SOInfoArchive.endStatus,
dbo.SOInfoArchive.returnCode,
dbo.SOInfoArchive.startTime,
dbo.SOInfoArchive.endTime,
dbo.SOInfoArchive.oDate,
dbo.SOInfoArchive.orderID,
dbo.SOInfoArchive.status,
dbo.SOInfoArchive.runCount,
dbo.SOInfoArchive.owner,
dbo.SOInfoArchive.cyclic,
dbo.SOInfoArchive.soInfoID,
dbo.SOInfoArchive.docInfoID,
dbo.SOInfoArchive.existsNote,
dbo.SOInfoArchive.noSysout,
dbo.serverInfo.serverName,
dbo.Groups.label AS applicationName,
Groups_1.label AS memberName,
Groups_2.label AS groupName,
Groups_3.label AS scheduleTableName,
dbo.SOInfoArchive.serverInfoID,
dbo.SOInfoArchive.applicationID,
dbo.SOInfoArchive.groupID,
dbo.SOInfoArchive.memberID,
dbo.SOInfoArchive.scheduleTableID,
dbo.docFile.docFileID,
dbo.docInfo.docInfoID AS Expr1,
dbo.docFile.docFileObject
FROM dbo.SOInfoArchive
JOIN dbo.serverInfo
ON dbo.SOInfoArchive.serverInfoID = dbo.serverInfo.serverInfoID
JOIN dbo.docInfo
ON dbo.SOInfoArchive.docInfoID = dbo.docInfo.docInfoID
JOIN dbo.docFile
ON dbo.docInfo.docFileID = dbo.docFile.docFileID
LEFT JOIN dbo.Groups AS Groups_3
ON dbo.SOInfoArchive.scheduleTableID = Groups_3.ID
LEFT JOIN dbo.Groups AS Groups_1
ON dbo.SOInfoArchive.memberID = Groups_1.ID
LEFT JOIN dbo.Groups AS Groups_2
ON dbo.SOInfoArchive.groupID = Groups_2.ID
LEFT JOIN dbo.Groups
ON dbo.SOInfoArchive.applicationID = dbo.Groups.ID
WHERE CONTAINS (docfileObject,#searchText)
),
cte2 AS
(
SELECT ROW_NUMBER() OVER (ORDER BY Expr1) AS rowNum, *
FROM cte
)
SELECT rowNum,
serverName,
jobName ,
oDate,
runCount,
orderID,
applicationName,
memberName,
nodeID,
endStatus,
returnCode,
startTime,
endTime,
status,
owner,
existsNote,
docFileID
FROM cte2
WHERE rowNum > #LowerLimit
AND rowNum <= #UpperLimit
END
Probably nobody cares anymore, but the reason it didn't work is that ROW_NUMBER() returns a BIGINT and your code defines the structure this way: cast(null as int) as rowNum

IN Clause with WHERE clause not getting proper results in SQL Server

SELECT Col1, Col2, Col3, Col4
FROM Table1
WHERE User1 = #Owner
AND group1 = #Group
AND date1 BETWEEN #startDate AND #endDate
AND Mail LIKE #email
AND def IN (CASE #InvoiceMethod //Problem is Here
WHEN ''
THEN def
ELSE (#InvoiceMethod)
END)
A piece of code from the stored procedure. If am executing this, it's not returning any rows, even though it has some to return. Problem is with the IN clause, if I didn't pass anything to IN clause i.e #InvoiceMethod is null, then I'm getting rows.
If I pass anything to #InvoiceMethod, I'm not getting any rows.
The value in #InvoiceMethod is = 'A','B'
I tried many combinations like 'A','B' or "A","B" without any results.
How to pass values to IN clause please? In which format?
Please help me out of this.
Modified the stored procedure to the following,
Declare #tmpt table (value nvarchar(5) not null)
SET #InvoiceCount=(select COUNT(*) from dbo.fnSplit(#InvoiceMethod, ','))
SET #tempVar=1;
WHILE #tempVar<=(#InvoiceCount)
BEGIN
INSERT INTO #tmpt (value)
VALUES (#InvoiceMethod);//Here i need to insert array of values to temp table.like invoicemethod[0],invoicemethod[1]&invoicemethod[2] depends on #InvoiceCount
SET #tempVar=#tempVar+1;
END
--DECLARE #tmpt TABLE (value NVARCHAR(5) NOT NULL)
--INSERT INTO #tmpt (value) VALUES (#InvoiceMethod);
SELECT Col1,Col2,Col3,Col4
FROM Table1
WHERE User1 = #Owner
AND group1 = #Group
AND date1 between #startDate AND #endDate
AND Mail LIKE #email
AND def IN (SELECT value FROM #tmpt)
But not getting the results as expected :(
IMO this isn't a good way to approach this problem, by passing a list of filter values for a column in a comma separated string, as this is almost encouraging a Dynamic Sql approach to the problem (i.e. where you EXEC a built Sql string which pastes in the #InvoiceMethod as a string).
Instead, Sql 2008 has Table Valued Parameters, (and prior to this, you could use Xml), which allows you to pass structured data into a procedure in a table format.
You then just need to join to this table parameter to effect the 1..N valued IN () filtering.
CREATE TYPE ttInvoiceMethods AS TABLE
(
Method VARCHAR(20)
);
GO
CREATE PROCEDURE dbo.SomeProc
(
#InvoiceMethod ttInvoiceMethods READONLY, -- ... Other Params here
)
AS
begin
SELECT Col1, Col2, ...
FROM Table1
INNER JOIN #InvoiceMethod
ON Table1.def = #InvoiceMethod.Method -- Join here
WHERE User1 = #Owner
... Other Filters here
END
Have a look here for a similar solution with a fiddle.
Edit
The optional parameter (#InvoiceMethod = '') can be handled by changing the JOIN to the TVP with a subquery:
WHERE
-- ... Other filters
AND (Table1.def IN (SELECT Method FROM #InvoiceMethod))
OR #InvoiceMethod IS NULL)
To Initialize a TVP to NULL, just don't bind to it in C# at all.
I think a variable represetning multiple values with comma is not allowed in the in clause. You should either use string fiunctions (split and join) or go with the temp table solution. I prefer the second.
Use a temporary table to store your values and then pass it to your in statement
DECLARE #tmpt TABLE (value NVARCHAR(5) NOT NULL)
INSERT INTO #tmpt .........
...
...
SELECT Col1,Col2,Col3,Col4
FROM Table1
WHERE User1 = #Owner
AND group1 = #Group
AND date1 BETWEEN #startDate AND #endDate
AND Mail LIKE #email
AND def IN (SELECT value FROM #tmpt)
Used Splitfunctions to resolve the issue,Modified SQL Query
SELECT Col1, Col2, Col3, Col4
FROM Table1
WHERE User1 = #Owner
AND group1 = #Group
AND date1 BETWEEN #startDate AND #endDate
AND Mail LIKE #email
AND def IN (SELECT * FROM sptFunction(#InvoiceMethod,',')) //Problem is Here (Solved by using split functions)

Entity Framework doesn't support stored procedures which build result sets from Dynamic queries or Temporary tables

I've written the following stored proc, which works fine. What I want to do with it though is use it an entity data model. However using it in the entity data model maps to a return type of integer, and a value of zero.
How do I get the SP to return the actual data instead of an integer using the DataContext ?
IF EXISTS (SELECT * FROM SYS.OBJECTS WHERE TYPE = 'P' AND NAME = 'myProc') DROP PROCEDURE myProc;
GO
CREATE PROCEDURE [dbo].myProc
#START DateTime, #STOP DateTime
AS
BEGIN TRY
CREATE TABLE #Temp (download_Pk int);
INSERT INTO #Temp
SELECT download_pk FROM t1
UNION ALL
SELECT download_pk FROM t2;
WITH
x as
(
SELECT ID as Caps_Pk,
rootID as [Caps_RootId],
Case400Series as [Case],
SUBSTRING(c1, CHARINDEX('_', c1,1)+1, LEN(c1)) as [Customer],
run as Run,
SUBSTRING(c2, 1, CHARINDEX('_', c2, 1) -1) as [Sample],
SUBSTRING(c2, CHARINDEX('_', c2,1)+1, len(c2)) as [Amplification],
projectTitle,
DateAdded as [UploadTime],
UserId as [User]
FROM t3
WHERE DateAdded >= #START AND DateAdded <= #STOP AND
[User] in (SELECT name FROM ViewUsers WHERE Site = 'abc' AND Role = 'def')
)
SELECT *
FROM x
WHERE Caps_Pk NOT IN (Select download_Pk from #Temp)
DROP TABLE #Temp;
END TRY
BEGIN CATCH
DROP TABLE #Temp;
END CATCH
GO
Thanks in Advance.
Have you looked at this Code First Stored Procudure, this works great for me, it also has a NuGet Pckage that you can install.
found the answer here: EF4 - The selected stored procedure returns no columns
"EF doesn't support importing stored procedures which build result set from:
Dynamic queries
Temporary tables
The reason is that to import the procedure EF must execute it."

Linq-to-SQL date format: query does not work

I have a stored procedure when I am executing this query in SQL Server
exec SelectOfficeNameGroup '2011-10-05', '2011-11-09', ''
it returns 110 rows.
Now I have two datepicker on my c# 3.5 form and one button which executes the query like this:
var result = context.SelectOfficeNameGroup(dateTimePickerFrom.Value, dateTimePickerTo.Value, "");
but its only returns 2 rows.
My date picker's format is MM/DD/YYYY
This is my procedure
ALTER PROC [dbo].[SelectOfficeNameGroup]
#From datetime,
#To datetime,
#OfficeName nvarchar(50)
AS
BEGIN
SELECT
ID AS ProductID, OfficeName,
SUM(Quantity) AS Quantity,
SUM(TotalPrice) AS TotalPrice,
Category
FROM
ProductLogWithCategory
WHERE
DateTime BETWEEN #From AND #To AND OfficeName = #OfficeName
GROUP BY
OfficeName, ID, Category
return
END
Any advice?
Try with
var result = context.SelectOfficeNameGroup(dateTimePickerFrom.Value.ToString("yyyy-MM-dd"), dateTimePickerTo.Value.ToString("yyyy-MM-dd"), "");
Have a look at the DateTime.ToString documentation
Update
Just to be on the safe side try
ALTER PROC [dbo].[SelectOfficeNameGroup]
#From varchar(8),
#To varchar(8),
#OfficeName nvarchar(50)
AS
BEGIN
SELECT
ID AS ProductID, OfficeName,
SUM(Quantity) AS Quantity,
SUM(TotalPrice) AS TotalPrice,
Category
FROM
ProductLogWithCategory
WHERE
DateTime BETWEEN #From AND #To AND OfficeName = #OfficeName
GROUP BY
OfficeName, ID, Category
return
END
and use it like this
from sql
exec SelectOfficeNameGroup '20111005', '20111109', ''
from linq
var result = context.SelectOfficeNameGroup(dateTimePickerFrom.Value.ToString("yyyyMMdd"), dateTimePickerTo.Value.ToString("yyyyMMdd"), "");
DateTime.Parse('your date in MM/DD/YYYY', new CultureInfo("en-US")).ToString("yyyy-MM-dd")

SQL Server (2008) Pass ArrayList or String to SP for IN()

I was wondering how I can pass either an ArrayList, List<int> or StringBuilder comma delimited list to a stored procedure such that I find a list of IDs using IN():
#myList varchar(50)
SELECT *
FROM tbl
WHERE Id IN (#myList)
In C# I am currently building the list as a string which is comma delimeted; however when using nvarchar(50) for example, as the type for the param in the stored procedure - I get an error as it can't convert '1,2,3' to int which it expects between the IN().
Any ideas? Much appreciated.
Pete
You could use a User Defined function such as
CREATE function [dbo].[csl_to_table] ( #list nvarchar(MAX) )
RETURNS #list_table TABLE ([id] INT)
AS
BEGIN
DECLARE #index INT,
#start_index INT,
#id INT
SELECT #index = 1
SELECT #start_index = 1
WHILE #index <= DATALENGTH(#list)
BEGIN
IF SUBSTRING(#list,#index,1) = ','
BEGIN
SELECT #id = CAST(SUBSTRING(#list, #start_index, #index - #start_index ) AS INT)
INSERT #list_table ([id]) VALUES (#id)
SELECT #start_index = #index + 1
END
SELECT #index = #index + 1
END
SELECT #id = CAST(SUBSTRING(#list, #start_index, #index - #start_index ) AS INT)
INSERT #list_table ([id]) VALUES (#id)
RETURN
END
Which accepts an nvarchar comma separated list of ids and returns a table of those ids as ints. You can then join on the returned table in your stored procedure like so -
DECLARE #passed_in_ids TABLE (id INT)
INSERT INTO #passed_in_ids (id)
SELECT
id
FROM
[dbo].[csl_to_table] (#your_passed_in_csl)
SELECT *
FROM
myTable
INNER JOIN
#passed_in_ids ids
ON
myTable.id = ids.id
In SQL 2008 there are table-valued-parameters, that make a friendly alternative to parsing CSV; see here for an example.
Otherwise, another option is xml - the xml data type in SQL Server allows you to read this pretty easily (although it takes more transfer bytes).

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