Must declare scalar variable in sql....with input and output parameters - sql

I got SP that gets USER_ID as input and fetches GROUP_ID from the table, but it shows error when I'm trying to run it:
must declare scalar variable #Group_i
My stored procedure:
Alter PROCEDURE [dbo].[DisplayDetails]
#User_Id int,
#Group_Id int OUTPUT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
Begin
-- Insert statements for procedure here
SELECT
#Group_Id=(select distinct(Group_Id) from input_files_updated)
from INPUT_FILES_updated where [User_Id]=#User_Id
END
END
GO
Query to execute SP:
Declare #Group_I int
Execute [dbo].[DisplayDetails] #User_Id='3',
#Group_Id=#Group_I out
Why I'm getting this error?

A little bit fixed query of yours:
Alter PROCEDURE [dbo].[DisplayDetails]
#User_Id int,
#Group_Id int OUTPUT
AS
BEGIN
SET NOCOUNT ON;
SELECT #Group_Id = (
select top 1 Group_Id
from INPUT_FILES_updated
where [User_Id]=#User_Id
)
RETURN
END
As I remember there must be a word RETURN in SP. Then try:
Declare #Group_I int
Execute [dbo].[DisplayDetails] #User_Id=3, #Group_Id=#Group_I output
SELECT #Group_I

Related

How to return an id and use it directly in another stored procedure?

I want his stored procedure to return the inserted id
ALTER PROCEDURE [dbo].[InsertAddress_DBO]
#Name VARCHAR(50)
AS
BEGIN
SET NOCOUNT ON;
INSERT INTO [dbo].[Address]([Address_Name])
OUTPUT INSERTED.Address_Id
VALUES (#Name)
END
This one the same
ALTER PROCEDURE [dbo].[InsertDocumentation_DBO]
#Texte VARCHAR(50)
AS
BEGIN
SET NOCOUNT ON;
INSERT INTO [dbo].[Documentation]([Documentation_Text])
OUTPUT inserted.Documentation_Id
VALUES (#Texte)
END
And this one to use them and return her own -
like using the inserted id to put it into the next stored procedure as a parameter
ALTER PROCEDURE [dbo].[InsertEstablishmentByStrings_DBO]
#Establishment_Name VARCHAR(50),
#Address_Name VARCHAR(50),
#Documentation_Text VARCHAR(50)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Address_ID INT ,
#Documentation_ID INT
EXEC #Address_ID = [dbo].[InsertAddress_DBO]
#Name = "rue de la banchiesserie 85 Golback"
EXEC #Documentation_ID = [dbo].[InsertDocumentation_DBO]
#Texte = "né en 55555 restaurant fabuleux"
INSERT INTO [dbo].[Establishment]([Establishment_Name],[Address_Id],[Documentation_Id])
OUTPUT inserted.Establishment_Id
VALUES (#Establishment_Name,#Address_ID,#Documentation_ID)
END
However, I always get an error, because the stored procedure doesn't return the id when I execute it.
What is wrong in my code?
I would like to get the code I could use again and again in each stored procedure I have to execute. I already tried ##Identity, indent, scoped,... nothing works.
If you want to return something from stored procedure to the context of SQL query execution you may use a return statement or an output parameter. I would suggest you to use the second option. The first one is generally intended to return status of procedure execution.
ALTER PROCEDURE [dbo].[InsertAddress_DBO]
#Name VARCHAR(50),
#Address_ID INT OUTPUT
AS
BEGIN
SET NOCOUNT ON;
INSERT INTO [dbo].[Address]([Address_Name])
VALUES (#Name)
SET #Address_ID = SCOPE_IDENTITY()
END
Than you can use returned value in your outer procedure
ALTER PROCEDURE [dbo].[InsertEstablishmentByStrings_DBO]
#Establishment_Name VARCHAR(50),
#Address_Name VARCHAR(50),
#Documentation_Text VARCHAR(50)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Address_ID INT ,
#Documentation_ID INT
EXEC [dbo].[InsertAddress_DBO]
#Address_ID = #Address_ID OUTPUT,
#Name = "rue de la banchiesserie 85 Golback"
...
END
An OUTPUT INSERTED clause you used doesn't returns data to the query execution context but send them to the output stream.
Your stored procedures should look like this, using an OUTPUT parameter, not trying to consume a RETURN value (which should never contain data) using a resultset. Also [don't] [put] [everything] [in] [square] [brackets] [unless] [you] [have] [to], [because] [all] [it] [does] [is] [hamper] [readability], and don't surround string literals with "double quotes" because that means something else in T-SQL.
CREATE OR ALTER PROCEDURE dbo.InsertAddress_DBO
#Name varchar(50),
#Address_Id int OUTPUT
AS
BEGIN
SET NOCOUNT ON;
INSERT dbo.Address(Address_Name)
VALUES (#Name);
SELECT #Address_Id = SCOPE_IDENTITY();
END
GO
CREATE OR ALTER PROCEDURE dbo.InsertDocumentation_DBO
#Texte varchar(50),
#Doc_Id int OUTPUT
AS
BEGIN
SET NOCOUNT ON;
INSERT dbo.Documentation(Documentation_Text)
VALUES (#Texte);
SELECT #Doc_Id = SCOPE_IDENTITY();
END
GO
Now, your main procedure can do this:
CREATE OR ALTER PROCEDURE dbo.InsertEstablishmentByStrings_DBO
#Establishment_Name varchar(50),
#Address_Name varchar(50),
#Documentation_Text varchar(50)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Address_ID INT ,
#Documentation_ID INT
EXEC dbo.InsertAddress_DBO
#Name = #Address_Name,
#Address_Id = #Address_ID OUTPUT;
EXEC dbo.InsertDocumentation_DBO
#Texte = Documentation_Text,
#Doc_Id = #Documentation_ID OUTPUT;
INSERT dbo.Establishment
(Establishment_Name, Address_Id, Documentation_Id)
OUTPUT inserted.Establishment_Id,
inserted.Address_ID, inserted.Documentation_ID
VALUES (#Establishment_Name,#Address_ID,#Documentation_ID);
END
GO
And you call it like this:
EXEC dbo.InsertEstablishmentByStrings_DBO
#Establishment_Name = 'Gaston''s',
#Address_Name = 'rue de la banchiesserie 85 Golback',
#Documentation_Text = 'né en 55555 restaurant fabuleux';
And get results like this:
Establishment_Id
Address_ID
Documentation_ID
1
1
1
Fully working example on db<>fiddle

Calling stored procedure from other stored procedure

This is stored procedure #1:
ALTER PROCEDURE [dbo].[sp1]
AS
BEGIN
DECLARE #test varchar(255)
exec #test = dbo.sp2
SET NOCOUNT ON;
SELECT
CMS_ORG.description, #test
FROM
CMS_ORG
END
This is stored procedure #2:
ALTER PROCEDURE [dbo].[sp2]
AS
BEGIN
SET NOCOUNT ON;
SELECT
CMS_MAS.description + '' + CONVERT(varchar(50),
CAST(CMS_ORG.amount AS money), 1)
FROM
CMS_ORG
INNER JOIN
CMS_MAS = CMS_ORG.GUID = CMS_MAS.GUID
END
The problem is here is I was not able to execute #test in stored procedure #1 by calling the stored procedure #2. When I execute sp1, I got a null values instead but when I execute the query of sp2 in sp1, I got a correct value. May I know what is the possible solution or similar examples which can solve the issue?
Your stored proc sp2 outputs the result of a SELECT, but like all stored procs, it returns an integer using the return statement. You don't have a return statement, so Sql Server generates one for you: return 0. The purpose of the return code is to give feedback on whether it ran as expected. By convention, a return code of 0 means no errors.
This shows the difference between the return code and the output of a stored proc. Create a temp table #output to capture the rows of the SELECT that the stored proc outputs.
DECLARE #return_code int
-- capture the output of the stored proc sp2 in a temp table
create table #output( column_data varchar(max) )
insert #output( column_data )
exec #return_code = dbo.sp2 -- returns 0 because you have no RETURN statement
-- extract column_data from #output into variable #test
-- if there is more than one row in #output, it will take the last one
DECLARE #test varchar(255)
select #test = column_data from #output
Create a table variable & Use it like this :
create proc test55
as
select 55
declare #test table (Value Varchar(255))
insert into #test
exec test55
Select * from #test
Your sp2 stored procedure will return table, not varchar(255).
If you want to get a varchar(255) from sp2 you should be using function.
You can view in my example:
Define a function:
CREATE FUNCTION dbo.function1()
RETURNS varchar(255)
WITH EXECUTE AS CALLER
AS
BEGIN
DECLARE #returnVal varchar(255);
SET #returnVal = (SELECT top 1 [ProductName]
FROM [dbo].[Products])
RETURN(#returnVal);
END;
And alter SP1 like this:
ALTER PROCEDURE [dbo].[sp1]
#SMonth As Integer,
#SYear As Integer
AS
BEGIN
DECLARE #test varchar(255)
set #test = dbo.function1()
SET NOCOUNT ON;
SELECT [ProductId], #test
FROM [LearningKO].[dbo].[Products]
END

Store the result of a stored procedure without using an output parameter

I have 2 stored procedures: up_proc1 and up_proc2.
This is (a simplified version of) up_proc2:
CREATE PROCEDURE dbo.up_proc2
#id_campaign uniqueidentifier, #id_subcampaign uniqueidentifier,
#id_lead uniqueidentifier, #offer NVARCHAR(1000) = NULL
AS
SET NOCOUNT ON
DECLARE #id UNIQUEIDENTIFIER
SELECT #id = id FROM prospects WHERE id_lead = #id_lead
AND id_campaign = #id_campaign AND id_subcampaign = #id_subcampaign
IF #id IS NULL
BEGIN
SET #id = newid ()
INSERT INTO prospects (id, id_campaign, id_subcampaign, id_lead, offer)
values (#id, #id_campaign, #id_subcampaign, #id_lead, #offer)
END
ELSE
BEGIN
UPDATE prospects set offer = #offer WHERE id=#id
END
SELECT #id AS ID
GO
From up_proc1 I call up_proc2. What I would like to achieve is to store the #id of up_proc2 in a variable declared in up_proc1. Is this possible without using an output parameter?
This is how up_proc1 looks like:
CREATE PROCEDURE dbo.up_proc1
AS
SET NOCOUNT ON
DECLARE #fromProc2 UNIQUEIDENTIFIER
-- NOT WORKING
-- select #fromProc2 = exec up_insertProspects [snip]
-- ALSO NOT WORKING
-- exec #fromProc2 = up_insertProspects [snip]
What you could do is store the output into a table variable:
DECLARE #tmpTable TABLE (ID UNIQUEIDENTIFIER)
INSERT INTO #tmpTable
EXEC dbo.up_proc2 ..........
and then go from there and use that table variable later on.
You can certainly consume this as an output parameter in proc2 without affecting how your C# code retrieves the eventual resultset.
ALTER PROCEDURE dbo.up_proc2
#id_campaign uniqueidentifier,
#id_subcampaign uniqueidentifier,
#id_lead uniqueidentifier,
#offer NVARCHAR(1000) = NULL,
#fromProc2 UNIQUEIDENTIFER = NULL OUTPUT
AS
BEGIN
SET NOCOUNT ON;
...
C# can ignore the new parameter since it is nullable (but since a single output parameter is more efficient than a data reader, you may consider updating your C# code to take advantage of the output parameter later).
Now in proc1:
ALTER PROCEDURE dbo.up_proc1
AS
BEGIN
SET NOCOUNT ON;
DECLARE #fromProc2 UNIQUEIDENTIFIER;
EXEC dbo.up_proc2
--... other parameters ...,
#fromProc2 = #fromProc2 OUTPUT;
-- now you can use #fromProc2
END
GO

Get scalar value from SELECT statement in stored proc, from within a stored proc

I know the preferred method for returning scalar values from stored procs is either using RETURN or an OUTPUT parameter. But lets say that I have a stored proc that returns the value using a select statement:
CREATE PROC spReturnNumber AS
SELECT 1
Is it possible to get this value from within another stored proc?
CREATE PROC spCheckNumber AS
EXEC spReturnNumber -- <-- get the return value here?
Clarification: I need a solution that doesn't require using an OUTPUT parameter, or using RETURN to return the value.
Thanks in advance.
You could use insert-exec to store the result of a stored procedure in a table:
declare #t table (col1 int)
insert #t exec spReturnNumber
return (select col1 from #t)
The definition of the table has to match the result set of the stored procedure.
Use an OUTPUT parameter instead of (or in addition to, if this procedure is used by other applications) the SELECT.
ALTER PROCEDURE dbo.spReturnNumber
#Number INT OUTPUT
AS
BEGIN
SET NOCOUNT ON;
SET #Number = 1;
SELECT #Number;
END
GO
CREATE PROCEDURE dbo.spCheckNumber
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Number INT;
EXEC dbo.spReturnNumber #Number = #Number;
SELECT #Number;
END
GO
If you can't change the original procedure, but you know its output will remain static, you could use a #temp table.
CREATE PROCEDURE dbo.spCheckNumber
AS
BEGIN
SET NOCOUNT ON;
CREATE TABLE #n(i INT);
INSERT #n(i) EXEC dbo.spReturnNumber;
DECLARE #Number INT;
SELECT #Number = i FROM #n;
END
GO
You can't get the SELECT value from "parent" procedure but you can get the return value like this:
CREATE PROC A AS
BEGIN
DECLARE #ret int
EXEC #ret = spReturnNumber
RETURN #ret
END
If you are unable to change the proc being called .. place the result set in a temp table [or table variable]:
CREATE TABLE #results (val INT)
DECLARE #someval int
INSERT #results
EXEC dbo.spCheckNumber
SELECT #someval =val from #results

SQL Server Stored Procedure store return value

Helo,
My question is I have one Stored Procedure in SQL Server that returns counts of a field. I want to store the results of this Stored Procedure in a variable (scalar?) of a different stored procedure.
sp_My_Other_SP:
CREATE PROCEDURE [dbo].sp_My_Other_SP
#variable int OUTPUT -- The returned count
AS
BEGIN -- SP
SET NOCOUNT ON;
SET #SQL = "SELECT COUNT(*) FROM blah"
EXEC(#SQL)
END -- SP
I currently do it like:
DECLARE #count int
EXEC sp_My_Other_SP #count OUTPUT
Then I use it like
IF (#count > 0)
BEGIN
...
END
However its returning the other Stored Procedure results as well as the main Stored Procedure results which is a problem in my .NET application.
-----------
NoColName
-----------
14
-----------
MyCol
-----------
abc
cde
efg
(Above is an attempted representation of the results sets returned)
I would like to know if there is a way to store the results of a Stored Procedure into a variable that doesn't also output it.
Thanks for any help.
You can capture the results of the stored procedure into a temp table so it is not returned by the calling stored procedure.
create table #temp (id int, val varchar(100))
insert into #temp
exec sp_My_Other_SP #value, #value, #value, #count OUTPUT
Well, the easiest way to fix this is to recode the stored proc so that the select statement that returns the 'other' result set you don't want in this case is conditionally extecuted, only when you are NOT asking for the count
Add another parameter called #GetCount
#GetCount TinyInt Defualt = 0 // or
#GetCount Bit Default = 0
Then
instead of just
Select ...
write
If #GetCount = 1
Select ...
Have you tried changing
SET #SQL = "SELECT COUNT(*) FROM blah"
EXEC(#SQL)
to
SELECT #variable = COUNT(*) FROM blah"
-- don't do EXEC(#SQL)
?
THE FIRST PROCEDURE:
CREATE PROC DD43
#ID INT OUTPUT AS
(SELECT #ID=COUNT(*) FROM CS2)
SECOND PROCEDURE:
CREATE PROC DD45 AS
DECLARE #COUNT INT
DECLARE #COUN INT
EXEC DD43 #COUN OUT --CALLING THE FIRST PROCEDURE
SET #COUNT= (SELECT #COUN)
SELECT #COUNT
EXEC DD45