Can I Use If Statement In A Table Valued Function?

Aug 22, 2007

hi,
I am using a function in sql server 2005 like this:
...... myfunction(... @FlagOn int)
.......
begin
return
(

if(@FlagOn = 1)
select * from.......
else
select * form....
)
end

But it keeps complaining there is some syntax error around if. What is it?

Thanks.

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Multi-statement Table-Valued Function

Oct 18, 2007

I'm creating a Multi-statement Table-Valued Function...

Is it possible to insert variables into the table? In other words, is it possible
to have something like

declare
@value1 varchar(10)
@value2 varchar(10)

BEGIN
<do some work on value1 and value2>
INSERT @returningTable
@value1, @value2

instead of

BEGIN
<do some work on value1 and value2>
INSERT @returningTable
SELECT col1, col2 from T_SOURCE

Here's why I want to insert variables...My function needs to return a table which contains a 'partial' incremental key.
I'll go with an example to explain what i have to do

Source_table
col1 col2
Mike 10
Mike 20
Ben 50
John 15
John 25
John 35

The table that my function needs to create should look like this
col1 col2 col3
Mike 10 1
Mike 20 2
Ben 50 1
John 15 1
John 25 2
John 35 3

I thought of creating a cursor and then looping through it generate col3 and save values of other individual columns in variables. But don't know how to use those variables when inserting records into function table.

Any other ideas? I'm caoming from Oracle world, I might be having some strange ideas on how to solve this problem. Any help is appreciated.

Thank you.

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Using A Scalar Valued Function As A Parameter Of A Table Valued Function?

Feb 1, 2006

Ok, I'm pretty knowledgable about T-SQL, but I've hit something that seems should work, but just doesn't...
I'm writing a stored procedure that needs to use the primary key fields of a table that is being passed to me so that I can generate what will most likely be a dynamically generated SQL statement and then execute it.
So the first thing I do, is I need to grab the primary key fields of the table.  I'd rather not go down to the base system tables since we may (hopefully) upgrade this one SQL 2000 machine to 2005 fairly soon, so I poke around, and find sp_pkeys in the master table.  Great.  I pass in the table name, and sure enough, it comes back with a record set, 1 row per column.  That's exactly what I need.
Umm... This is the part where I'm at a loss.  The stored procedure outputs the resultset as a resultset (Not as an output param).  Now I want to use that list in my stored procedure, thinking that if the base tables change, Microsoft will change the stored procedure accordingly, so even after a version upgrade my stuff SHOULD still work.  But... How do I use the resultset from the stored procedure?  You can't reference it like a table-valued function, nor can you 'capture' the resultset for use using the  syntax like:
DECLARE @table table@table=EXEC sp_pkeys MyTable
That of course just returns you the RETURN_VALUE instead of the resultset it output.  Ugh.  Ok, so I finally decide to just bite the bullet, and I grab the code from sp_pkeys and make my own little function called fn_pkeys.  Since I might also want to be able to 'force' the primary keys (Maybe the table doesn't really have one, but logically it does), I decide it'll pass back a comma-delimited varchar of columns that make up the primary key.  Ok, I test it and it works great.
Now, I'm happily going along and building my routine, and realize, hey, I don't really want that in a comma-delimited varchar, I want to use it in one of my queries, and I have this nice little table-valued function I call split, that takes a comma-delimited varchar, and returns a table... So I preceed to try it out...
SELECT *FROM Split(fn_pkeys('MyTable'),DEFAULT)
Syntax Error.  Ugh.  Eventually, I even try:
SELECT *FROM Split(substring('abc,def',2,6),DEFAULT)
Syntax Error.
Hmm...What am I doing wrong here, or can't you use a scalar-valued function as a parameter into a table-valued function?
SELECT *FROM Split('bc,def',DEFAULT) works just fine.
So my questions are:
Is there any way to programmatically capture a resultset that is being output from a stored procedure for use in the stored procedure that called it?
Is there any way to pass a scalar-valued function as a parameter into a table-valued function?
Oh, this works as well as a work around, but I'm more interested in if there is a way without having to workaround:
DECLARE @tmp varchar(8000)
SET @tmp=(SELECT dbo.fn_pkeys('MyTable'))
SELECT *
FROM Split(@tmp,DEFAULT)

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SQL2K SP4 Gives Error 1706 Creating Multi-statement Table-valued Function Names Beginning With Sys?

Nov 2, 2006

Hi all,

I've created a number of tables, views, sproc, and functions whose names begin with "sys_", but when I tried to create a multi-statement table-valued function with this type of name, I got:

Server: Msg 1706, Level 16, State 2, Procedure sys_tmp, Line 9
System table 'sys_test' was not created, because ad hoc updates to system catalogs are not enabled.

I had a quick look in this forum for 1706 (and on Google) but couldn't find anything. Does anyone know for certain if this is a bug in SQL2K?

Thanks, Jos

Here's a test script:
/*
----------------------------------------------------------------------------------------------------
T-SQL code to test creation of three types of function where the function name begins with "sys_".
Jos Potts, 02-Nov-2006
----------------------------------------------------------------------------------------------------
*/

PRINT @@VERSION
go

PRINT 'Scalar function with name "sys_" creates ok...'
go

CREATE FUNCTION sys_test
()
RETURNS INT
AS
BEGIN
RETURN 1
END
go

DROP FUNCTION sys_test
go

PRINT ''
go


PRINT 'In-line table-valued function with name "sys_" creates ok...'
go

CREATE FUNCTION sys_test
()
RETURNS TABLE
AS
RETURN SELECT 1 c
go

DROP FUNCTION sys_test
go

PRINT ''
go


PRINT 'Multi-statement table-valued function with name "sys_" generates error 1706...'
go

CREATE FUNCTION sys_tmp
()
RETURNS @t TABLE
(c INT)
AS
BEGIN

INSERT INTO @t VALUES (1)

RETURN

END
go

DROP FUNCTION sys_test
go

PRINT ''
go

/*
----------------------------------------------------------------------------------------------------
*/

And here€™s the output from running the test script in Query Analyser on our server:
Microsoft SQL Server 2000 - 8.00.2039 (Intel X86)
May 3 2005 23:18:38
Copyright (c) 1988-2003 Microsoft Corporation
Standard Edition on Windows NT 5.0 (Build 2195: Service Pack 4)

Scalar function with name "sys_" creates ok...

In-line table-valued function with name "sys_" creates ok...

Multi-statement table-valued function with name "sys_" generates error 1706...
Server: Msg 1706, Level 16, State 2, Procedure sys_tmp, Line 11
System table 'sys_tmp' was not created, because ad hoc updates to system catalogs are not enabled.
Server: Msg 3701, Level 11, State 5, Line 2
Cannot drop the function 'sys_test', because it does not exist in the system catalog.

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Dec 9, 2007

Hi all,

I executed the following sql script successfuuly:

shcInLineTableFN.sql:

USE pubs

GO

CREATE FUNCTION dbo.AuthorsForState(@cState char(2))

RETURNS TABLE

AS

RETURN (SELECT * FROM Authors WHERE state = @cState)

GO

And the "dbo.AuthorsForState" is in the Table-valued Functions, Programmabilty, pubs Database.

I tried to get the result out of the "dbo.AuthorsForState" by executing the following sql script:

shcInlineTableFNresult.sql:

USE pubs

GO

SELECT * FROM shcInLineTableFN

GO


I got the following error message:

Msg 208, Level 16, State 1, Line 1

Invalid object name 'shcInLineTableFN'.


Please help and advise me how to fix the syntax

"SELECT * FROM shcInLineTableFN"
and get the right table shown in the output.

Thanks in advance,
Scott Chang

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Aug 8, 2007

I am new to writing table-valued user defined function, so this might be a 'Duh' question. I am trying to write a table-valued UDF that has to return multiple rows. How do I do this?

Thanks

Mangala

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Mar 10, 2008

Hi,

I want to join a table valued function but function parameter should left joined table's primary key .... this is posible in oracle by pipeline method ..
eg..
SELECT A.Col1,A.Col2,B.Col1,B.Col2
FROM Tab As A LEFT OUTER JOIN TblFunction(A.Pkey) B
ON A.Col1 = B.Col1

any body help me ... thanx in advance..

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Jul 20, 2005

Is there a way to create a trigger directly on an inline or multi-line tablevalue function?I am trying to create a quick-and-dirty application using an Access DataProject front-end with SQL 2000 SP3 EE.Thanks.

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Oct 22, 2007

Hi there. I've hit some gap in my SQL fundementals. I'm playing with table-valued functions but I can't figure out how to join those results with another table. I found another way to hit my immediate need with a scalar function, but ultimately I'm going to need to use some approach like this. What am I misunderstanding here?

The Given Objects:
function Split(stringToSplit, delimiter) returns table (column: token)
table Words (column: Words.word) -- table of predefined words
table Sentences (column: Sentences.sentence) -- table of sentences; tokens may not be in Words table, etc

The Problems:
1) how do I query a set of Sentences and their Tokens? (using Split)
2) how do I join tables Sentences and Words using the Split function?

The Attempts:
A)
select word, sentence, token
from Words,
Sentences,
dbo.Split(sentence, ' ') -- implicitly joins Split result with Sentences?
where word = token

resulting error: "'sentence' is not a recognized OPTIMIZER LOCK HINTS option."

B)
select word, sentence
from Words, Sentences
where word in (select token from dbo.Split(sentence, ' ')) -- correlated subquery?

resulting error: "'sentence' is not a recognized OPTIMIZER LOCK HINTS option."

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May 29, 2008



Is it possible to define a constraint for Primary Key on more than 1 column or an alternate index on a column in a return table from an inline table valed function?

Example Header:


alter FUNCTION [dbo].[fntMetaFrame] (@ii_CompanyID int)

RETURNS @tbl_MetaFrame TABLE ( pk_Key int Identity(1,1) primary key,






ObjectID int ,







Seq int null )




I want the primary key to be pk_Key, ObjectID

OR

I want to add another index on ObjectID.

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Aug 30, 2007

I am using a multi-statement table-valued function to assemble data from several tables and views for a report. To do this, I INSERT data into the first few columns and then use UPDATEs to put data additional data into each row. Each UPDATE uses a WHERE criteria that identifies a unique row, based on the value of the first few columns.

The problem I'm having is that the UPDATEs are taking forever to execute. I believe the reason is that the temporary table that's created for the function is not indexed, so each row update requires a complete search of several columns.

In other situations I've been able to define one column as a primary key for the temporary table, but in this situation the primary key would have to consist of four columns, which doesn't seem to be allowed in the table definition for the function.

Is there any way to create indexes for the temporary tables that are created for multistatement table-valued functions? I think that would improve the UPDATE performance dramatically.

Thanks,
Lee Silverman
JackRabbit Sports

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Apr 24, 2015

I would like to create a table valued function that fetch through the table below using a cursor and return the records that are unique

EmpidChDateSiteuseridinitsal finsalNote
-------------------------------------------- ----------
236102015-4-21 22:02:10.8072570 0.696176161 change inisal value
236112015-4-21 22:02:11.0502570 0.696176161change inisal value
236122015-4-21 22:02:11.1202570 0.696176161 change inisal value
236132015-4-21 22:02:11.2452570 0.696176161change inisal value

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Apr 18, 2007

Here is the scenario,
I have 2 stored procedures, SP1 and SP2

SP1 has the following code:

declare @tmp as varchar(300)
set @tmp = 'SELECT * FROM
OPENROWSET ( ''SQLOLEDB'', ''SERVER=.;Trusted_Connection=yes'',
''SET FMTONLY OFF EXEC ' + db_name() + '..StoredProcedure'' )'

EXEC (@tmp)

SP2 has the following code:

SELECT *
FROM SP1 (which won't work because SP1 is a stored procedure. A view, a table valued function, or a temporary table must be used for this)

Views - can't use a view because they don't allow dynamic sql and the db_name() in the OPENROWSET function must be used.
Temp Tables - can't use these because it would cause a large hit on system performance due to the frequency SP2 and others like it will be used.
Functions - My last resort is to use a table valued function as shown:

FUNCTION MyFunction
( )
RETURNS @retTable
(
@Field1 int,
@Field2 varchar(50)
)
AS
BEGIN
-- the problem here is that I need to call SP1 and assign it's resulting data into the
-- @retTable variable

-- this statement is incorrect, but it's meaning is my goal
INSERT @retTableSELECT *FROM SP1

RETURN
END

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Oct 20, 2014

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create table #WeightedAVG
(
Segment varchar(20),
orders decimal,
calls int
);
insert into #WeightedAVG

[code].....

I would like to create a function from this where I can input columns, and two numbers to get an average to output in a table ie,

CREATE FUNCTION WeightedAVG(@divisor int, @dividend int, @table varchar, @columns varchar)
returns @Result table
(
col1 varchar(25),
WeightedAVG float

[Code] .....

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Jan 6, 2004

Hi there,

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ALTER FUNCTION dbo.fnSearch_GetJobsByOccurrence
(
@param1 int,
@param2 int
)
RETURNS @Result TABLE (resultcol1 int, resultcol2 int)
AS
BEGIN

CREATE INDEX resultcol2_ind ON @Result

-- do some other stuff

RETURN
END

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Jun 6, 2006

 

I need to return a table of values calculated from other tables. I have about 10 reports which will use approx. 6 different table structures.

Would it be better performance wise to create a physical table in the database to update while calculating using an identity field to id the stored procedure call, return the data and delete the records. For Example:

 DataUserID, StrVal1,Strval2,StrVal4,IntVal1,IntVal2,FloatVal1...

Or using a table-valued function to return a temp table as the result.

I just dont know which overhead is worst, creating a table per function call, or using a defined table then deleting the result set per sp call. 

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Sep 26, 2007

Hi,

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The syntax is as follows:

select car.id, car.licenceNumber, car.brand, car.model,
(select driverName from getCurrentDriver(car.id)) as driverName
from car

When I try to compile I get following error on the line of the function:
Incorrect syntax near '.'

The database version is SQL Server 2000 SP3.

What am I doing wrong? Is there a workaround for this error?

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Jul 18, 2007

Hello everybody,

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Or can I create a view and then do a "SELECT * FROM viewName WHERE columnName IN (@param)"?

Thanks in advance for your answers.

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Mar 31, 2008

I am using SQL2005 EE with SP1. The server OS is windows 2K3 sp2

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I have created indexes for the related joinning tables.

I would like to check the performance of a table-valued function and optimize the indexing columns by the execution plan.

I found the graphic explanation only show 1 icon to represent the function performance. I cannot find any further detail of the function. (E.g. using which index in joinning)

If I change the function to stored procedure, I can know whether the T-SQL is using index seek or table scan. I also found the stored procedure version subtree cost is much grether that the table-valued function

I would like to know any configureation in management studio can give more inform for the function performance?

Thanks


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May 18, 2007

Hi, I'm having trouble with this multi-statement table-valued function:

ALTER FUNCTION MakeArDetail
(
-- Add the parameters for the function here
@dateStart DATETIME,
@dateEnd DATETIME
)
RETURNS @arDetail TABLE
(
Insurer VARCHAR(50),
NABP INT DEFAULT 0,
Claim MONEY DEFAULT 0,
Payment MONEY DEFAULT 0,
NumRx CHAR(7),
PatientName VARCHAR(50),
Paid030 MONEY DEFAULT 0,
Paid3160 MONEY DEFAULT 0,
Paid6190 MONEY DEFAULT 0,
Paid91120 MONEY DEFAULT 0,
Paid121 MONEY DEFAULT 0
)
AS
BEGIN
DECLARE @arTemp TABLE
(
Insurer VARCHAR(50),
NABP INT DEFAULT 0,
Claim MONEY DEFAULT 0,
Payment MONEY DEFAULT 0,
NumRx CHAR(7),
PatientName VARCHAR(50),
Paid030 MONEY DEFAULT 0,
Paid3160 MONEY DEFAULT 0,
Paid6190 MONEY DEFAULT 0,
Paid91120 MONEY DEFAULT 0,
Paid121 MONEY DEFAULT 0
)

INSERT INTO @arTemp
SELECT DISTINCT Insurer,NABP,0,0,NumRx,Patient,0,0,0,0,0 FROM Pims;
UPDATE @arTemp SET Claim =
(SELECT SUM(Pims.AmtReq)
FROM Pims
WHERE Pims.Insurer = @arTemp.Insurer AND
Pims.NABP = @arTemp.NABP AND
Pims.NumRx = @arTemp.NumRx
);

INSERT INTO @arDetail SELECT * FROM @arTemp
RETURN
END
GO

I get
Msg 137, Level 15, State 2, Procedure MakeArDetail, Line 43
Must declare the scalar variable "@arTemp".

I don't understand why SQL thinks @arTemp is a scalar variable which has to be declared.
If I don't include the UPDATE command the thing works.

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Nov 15, 2007

I have a table-valued function in mssql 2005 as below:
ALTER FUNCTION fn_test{   @test nvarchar(1000)}RETURNS@TEMP TABLE{   test nvarchar(1000)}ASBEGIN   INSERT INTO @TEMP   SELECT @test
   RETURNEND
Everytime, I passed in chinese character (@test), such as æ¸¬é©—, the function will return ????.  What should I do for the table-valued function, so that the chinese character can be passed in?  Please help.
Note: I can search and get the chinese characters if I use stored procedures; and the columns in the tables can store chinese chararcters as well.   Only table-valued function is not working with the chinese characters.  Is it a bug from MSSQL 2005?
 
 

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Mar 13, 2014

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Query:

ALTER FUNCTION [dbo].[ufn_Banner_Orion_Employee_Comparison_parser_v2]
(
@BANNER_COLUMN AS VARCHAR(MAX),
@ORION_COLUMN AS VARCHAR(MAX)
)
RETURNS @Banner_Orion_Employee_Comparison TABLE

[code]....

Returns:

I execute this:

select * from ufn_Banner_Orion_Employee_Comparison_parser_v2 ('a.BANNER_RANK' , 'b.[rank]')

and get:

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It works fine on non-inline function. I couldn't find any documentation indicating this wasn't possible.

I can use the MAXRECURSION option in call to the function

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(
@containerSqlId SMALLINT,
@containerIncId INT
)
RETURNS @Results TABLE

[Code] ....

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mns.col2
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Jan 16, 2007

Hi,
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Hi,

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Would it be better performance wise to create a physical table in the database to update while calculating using an identity field to id the stored procedure call, return the data and delete the records. For Example:

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Or using a table-valued function to return a temp table as the result.

I just dont know which overhead is worst, creating a table per function call, or using a defined table then deleting the result set per sp call.

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Mar 19, 2008

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Code Snippet

declare @IdTable table
(
EmployeeId nvarchar( 16 ) not null
)
insert into @IdTable
select EmployeeNumber from Employees

/*
I need to run this query for every EmployeeId value in @IdTable and return the results from the stored proc as a single result set.
*/
select * from fn_GetEmployeeById( EmployeeId )







Any help is very much appreciated.
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ALTER PROCEDURE [dbo].[rpt]

(


@CourtIDs as nvarchar(MAX) -- @CourtIDs = '1231,3432,1234,3421'

)
AS


--split CourtIDs into a table
DECLARE @tbCourtIDs table(CourtID int NOT NULL PRIMARY KEY)
INSERT INTO @tbCourtIDs
select * from dbo.Split(@CourtIDs, ',')

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Hello

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It gives me Line 100: Incorrect syntax near 'T', referring to the T of T.id.

If I do
Select * from table T, mstvF1( 5 ), then it works.

Is there any way to do a select from a table T combined with an MSTV function and passing in as a parameter a field from T?

Thanks for any help.

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T-SQL (SS2K8) :: Table Valued Function For Active Directory Group Membership

Jun 8, 2012

For code reuse, I am trying to get a table valued function to return users of a given AD group name. I can easily get this with hard-coding the group name. But because OpenQuery wont accept parameters, I can't insert my group name there. And because functions can't call dynamic SQL, I can't do it via dynamic sql. I have seen people do it with CLR, but I rather not go that route. I can use a stored procedure + cursor and iterate through each group and store the results into real tables and create a cache, but I rather query Active Directory itself to save space, but I rather do the caching then the CLR. Any approach I am missing on how to do this?

The following works fine:

SELECT DISTINCT sAMAccountName
FROM OPENQUERY(ADSI, 'SELECT sAMAccountName, sn
FROM ''LDAP://OU=SomeOU,OU=SomeOtherOU,DC=SomeDC,DC=SomeOtherDC''
WHERE objectCategory=''Person'' AND objectClass=''USER'' AND memberOf=''CN=SomeGroupName,OU=SomeOU,OU=SomeOtherOU,DC=SomeDC,DC=SomeOtherDC''') a
WHERE sn IS NOT NULL

The following gives me the error:

Invalid use of a side-effecting operator 'EXECUTE STRING' within a function.
CREATE FUNCTION [dbo].queryADGroupMembers
(
@group nvarchar(255)
)
RETURNS @rtnTable TABLE

[Code] .....

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SQL Server 2012 :: Return Random Records In A Table-valued Function?

Dec 19, 2013

My overarching goal is to generate sets of random Symptom records for each Enrollee in a drug study, so that for each cycle (period of time), the code will insert a random number of random records for each enrollee.

I'm trying to return a number of random records from a table, but inside a table-valued function... (which could be my problem).

CREATE FUNCTION dbo.ufn_GetTopSymptoms (
@enrollID INT
, @CTCVersion VARCHAR(20)
, @NumRecords INT
)
RETURNS TABLE

[Code] ....

But that ORDER BY NEWID() clause is illegal apparently, because here's the error it throws:

Msg 443, Level 16, State 1, Procedure ufn_GetTopSymptoms, Line 13
Invalid use of a side-effecting operator 'newid' within a function.

I was hoping I could return a set of enrollmentIDs and then use CROSS APPLY to generate a random set of records for each enrollmentID... is this not possible with APPLY? I was trying to avoid using a cursor...

The idea is basically to create all the Symptom records for all the patients in treatment cycle at once by using Enrollee OUTER APPLY dbo.ufn_GetTopSymtoms(dbo.Enrollment.EnrolleeID)

but that's clearly not working. Is there a way to do this without resorting to a cursor?

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