Indexes On Table Variable Of Table Valued Function
Hi there,
Can someone tell me if it is possible to add an index to a Table variable that is declare as part of a table valued function ? I've tried the following but I can't get it to work.
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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Passing Table Names To Table Valued Functions
Hello, It is possible to write stored procedures which take table names as parameters; is it also possible to do this with table valued functions? For example, a simple stored procedure is this: CREATE PROCEDURE SelectTop(@tableName sysname) AS BEGIN Execute('Select top 10 * from ' + @tableName + ';') END I want to be able to do the analogous thing with a table valued function (so that I can query the result set, without having to create a temp table). How should I do this (i.e., pass a tablename as an argument to a table valued function)?
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Passing Variable To Table Function In Join
Hello, thanks in advance for reading this. I am having difficulty trying to get a statement to work. There is a MAIN table: ItemNo int identity(1,0), ItemType tinyint There is a WETPAINT table: ItemNo int, Color varchar(20) There is a DRYPAINT table: ItemNo int, Color varchar(20) Now, what I want to do is JOIN the MAIN table to either the WETPAINT table or the DRYPAINT table depending on the value of MAIN.ItemType So I created a table function called getTable: CREATE FUNCTION [dbo].[gettable] ( @ItemType int = 1 ) RETURNS @thistable TABLE ( Color varchar(20) ) AS BEGIN if @ItemType = 1 insert into @thistable (color) select color from WETPAINT if @ItemType = 2 insert into @thistable (color) select color from DRYPAINT RETURN END This is all fine and dandy if I iterate through the MAIN table one row at a time, but how can I JOIN the tables, like: SELECT MAIN.ItemNo, a.Color FROM MAIN INNER JOIN gettable(Main.ItemNo) as a ON a.ItemNo = MAIN.ItemNo Obviously, there is more than one field in the DRYPAINT and WETPAINT tables, and there is a need to have both tables instead of combining them into one. Any help in how to create a table alias by passing a value from the select statement would be greatly appreciated! Thanks again. PS -- I am trying to create a view with this, so I can't use variables and iterate through the MAIN table one row at a time.
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Table Valued Functions : Why?
I'm studying for the MCDBA test & understand table valued functions but am struggling to find a good use for them... can anyone explain to me why you'd want to use one over a view?
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How To Find Filegroups For A Given Table And Table's Indexes
Hi I am using SQL Server 2005 Developer Edition. I want a list of the following things from the database: - Table Name , FileGroup Table resides on Table Name, Index Name, FileGroup index resides on To put it simply, consider the following example:- Lets say I have a table XYZ in my database created on Filegroup F1. It has a PK PK1 nonclustered index on Filegroup F2. List1 ------- XYZ F1 List2 --------- XYZ PK1 F2 Please do not tell me of sp_help <table> option Regards Imtiaz
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Views Or Table Valued Functions?
Hi I am writting Stored Procedures that have to be built on the base of other tables specially created for this purpose, is it better to create these intermediate tables as views or as functions returning tables? I guess views would be lighter on performance as they would not be created on the fly?
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Table-valued UDF With Conditional RETURN
I'm getting syntax errors that just aren't helping me at all, so I thought maybe what I'm trying to do can't be done. I'm creating a UDF with 4 parameters, and I want it to return a result set (i.e. a table). But I want a different result set depending upon the value of one of the parameters. This works totally fine as a SP, but I can't tell where to put the RETURN clause(s) on the UDF. I've got: CREATE FUNCTION myFunction(@param1,...,@param4) RETURNS TABLE AS BEGIN IF @param1='x' BEGIN RETURN(SELECT columns FROM TableX) END ELSE BEGIN RETURN(SELECT columns FROM TableY) END END I get an "Incorrect syntax near the keyword 'IF'" error. I also tried using just one RETURN() wrapped around the outside of the IF construction (right after the very first BEGIN and before the last END), but to no avail. I get no errors when I run this logic as an SP. Is this type of construct not allowed in a UDF? Is there an alternative? I can't just leave this as a proc because I'm going to have to call these results from several views. Help! Thanks, -Ed H.
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CLR Table Valued Functions Error
Hi, I'm trying to create a CLR functions this is the Sql Function attribute and the FillRowMethod signature [Microsoft.SqlServer.Server.SqlFunction(DataAccess = DataAccessKind.Read, SystemDataAccess = SystemDataAccessKind.Read, FillRowMethodName = "FillRows",IsPrecise=true, TableDefinition = "SOCIETA nvarchar(55),CLIENTE nvarchar(150),NUMEROCONTRATTO nvarchar(255),FIRMA datetime,CHIUSURA datetime,AUTORIZZATO float" )] public static IEnumerable dbf_Create_RiepilogoAccordi(SqlInt32 commessa, SqlInt32 tipo_commessa, SqlInt32 progetto, SqlInt32 DAC, SqlInt32 figura, SqlDateTime dataFatturazioneDa, SqlDateTime dataFatturazioneA) public static void FillRows(Object obj, out SqlString SOCIETA, out SqlString CLIENTE, out SqlString NUMEROCONTRATTO, out SqlDateTime FIRMA, out SqlDateTime CHIUSURA, SqlDouble AUTORIZZATO) Whe I try to deploy my function, I get the following error: Error 1 Function signature of "FillRow" method (as designated by SqlFunctionAttribute.FillRowMethodName) does not match SQL declaration for table valued CLR function 'dbf_Create_RiepilogoAccordi' due to column 6. CM.Reports.SIA.RiepilogoAccordi I get this error whichever combination of name/value I use for column 6 Can someone help me? Thanks Marco
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Help!!! Troubles With Table-valued Functions
Hi! Here's my function. The trouble - I can not make ORDER BY the "visits_count", "properties_count", "enquiries_count" fields. May be some one could help me with this? CREATE FUNCTION [dbo].[GetPagedStatistics] ( @start_index int, @count int, @condition nvarchar(255), @order_field nvarchar(255), @date_from datetime, @date_to datetime ) RETURNS @total_stat TABLE ( username nvarchar(255), first_name nvarchar(255), last_name nvarchar(255), properties_count int, enquiries_count int, visits_count int, id_user int) BEGIN INSERT @total_stat SELECT top (@count) dbo.users.username, dbo.users.first_name, dbo.users.last_name, ISNULL(COUNT(DISTINCT dbo.advertisement.id_advertisement), 0) AS properties_count, ISNULL(COUNT(DISTINCT dbo.enquiry_emails.id_enquiry_email), 0) AS enquiries_count, ISNULL(COUNT(DISTINCT dbo.property_statistics.id_statistics), 0) AS visits_count, dbo.users.id_user FROM dbo.property_statistics RIGHT OUTER JOIN dbo.advertisement RIGHT OUTER JOIN dbo.users ON dbo.advertisement.id_user = dbo.users.id_user LEFT JOIN dbo.enquiry_emails ON dbo.enquiry_emails.id_advertisement = dbo.advertisement.id_advertisement ON dbo.property_statistics.id_advertisement = dbo.advertisement.id_advertisement WHERE 1=@condition and (dbo.advertisement.creation_date <= @date_to and dbo.advertisement.creation_date >= @date_from ) and ( (dbo.enquiry_emails.creation_date <= @date_to and dbo.enquiry_emails.creation_date >= @date_from and dbo.property_statistics.view_date <= @date_to and dbo.property_statistics.view_date >= @date_from ) or (dbo.property_statistics.view_date is null) or (dbo.enquiry_emails.creation_date is null) ) and (ISNULL(dbo.advertisement.id_parent, 0) = 0) GROUP BY dbo.users.username, dbo.users.first_name, dbo.users.last_name, dbo.users.id_user order by case when @order_field='username' then dbo.users.username end, case when @order_field='first_name' then dbo.users.first_name end, case when @order_field='last_name' then dbo.users.last_name end, case when @order_field='properties_count' then 1 end, case when @order_field='enquiries_count' then 1 end, case when @order_field='visits_count' then 1 end RETURN END
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Inline-table-valued Functions
Help! Been doing the box step with BOL for several hours , Using tables in Adventureworks to create inline-table-valued function to provide a parameterized view of three JOINS - Have sucessfully created the function but can't figure out where to 'Declare' my variable "@SalesAgentID" need to be able to invoke the function with a particular ID - If you can help me cut this dance short I would REALLY Appreciate it.
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Help!!! Troubles With Table-valued Functions
Hi! Here's my function. The trouble - I can not make ORDER BY the "visits_count", "properties_count", "enquiries_count" fields. May be some one could help me with this? CREATE FUNCTION [dbo].[GetPagedStatistics] ( @start_index int, @count int, @condition nvarchar(255), @order_field nvarchar(255), @date_from datetime, @date_to datetime ) RETURNS @total_stat TABLE ( username nvarchar(255), first_name nvarchar(255), last_name nvarchar(255), properties_count int, enquiries_count int, visits_count int, id_user int) BEGIN INSERT @total_stat SELECT top (@count) dbo.users.username, dbo.users.first_name, dbo.users.last_name, ISNULL(COUNT(DISTINCT dbo.advertisement.id_advertisement), 0) AS properties_count, ISNULL(COUNT(DISTINCT dbo.enquiry_emails.id_enquiry_email), 0) AS enquiries_count, ISNULL(COUNT(DISTINCT dbo.property_statistics.id_statistics), 0) AS visits_count, dbo.users.id_user FROM dbo.property_statistics RIGHT OUTER JOIN dbo.advertisement RIGHT OUTER JOIN dbo.users ON dbo.advertisement.id_user = dbo.users.id_user LEFT JOIN dbo.enquiry_emails ON dbo.enquiry_emails.id_advertisement = dbo.advertisement.id_advertisement ON dbo.property_statistics.id_advertisement = dbo.advertisement.id_advertisement WHERE 1=@condition and (dbo.advertisement.creation_date <= @date_to and dbo.advertisement.creation_date >= @date_from ) and ( (dbo.enquiry_emails.creation_date <= @date_to and dbo.enquiry_emails.creation_date >= @date_from and dbo.property_statistics.view_date <= @date_to and dbo.property_statistics.view_date >= @date_from ) or (dbo.property_statistics.view_date is null) or (dbo.enquiry_emails.creation_date is null) ) and (ISNULL(dbo.advertisement.id_parent, 0) = 0) GROUP BY dbo.users.username, dbo.users.first_name, dbo.users.last_name, dbo.users.id_user order by case when @order_field='username' then dbo.users.username end, case when @order_field='first_name' then dbo.users.first_name end, case when @order_field='last_name' then dbo.users.last_name end, case when @order_field='properties_count' then 1 end, case when @order_field='enquiries_count' then 1 end, case when @order_field='visits_count' then 1 end RETURN END
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Multi-statement Table-valued Functions
Hello I am trying to do the following: 1. Create a Multi-statement Table-valued Functions, say mstvF1, with 1 parameter. 2. Then, use it like this: "Select * from table T, mstvF1( T.id )" 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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Table-valued User-defined Functions
Is there a way to execute a table-valued user-defined function within SSIS - one that no only returns a "table" of values but also passes in variables to the udf? Example of it in query form: DECLARE @Var1 INT SET @Var1=ID FROM dbo.dbtable WHERE Status = 1 SELECT * FROM udf_Foo(@Var1) Thanks.
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Problem With Stored Procedure And Table-valued Functions
Hello Gurus, I have a stored procedure that gathers data from three tables and joins them, two of the tables need to have different rowcounts set, ie. pull only a certain number of rows from one table and only a certain number of rows from another table... The number of rows it should pull are stored within a table for each. Let me explain.... these tables hold Exchange storage group and mailstore data for a number of servers. Each server has a table entry with the number of child storage groups and each storage group has a table entry with the number of child mailstores. The tables get updated every two minutes via a program. I need to be able to get the most Data with the correct child counts for each server and storage group. I believe that i've found a way to do this with a stored procedure that calls a table-valued function. The table-valued function simply filters down the storage group table to it's number of storage groups, ordered by timestamp. I may be way off here, but i can't tell because both the stored procedure and function check out fine but when i execute the stored procedure it gives me the following error: Cannot find either column "dbo" or the user-defined function or aggregate "dbo.GetExchSGInfo", or the name is ambiguous. My code is below: Stored Procedure: SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROCEDURE [dbo].[GetExchangeData2] @top INT, @SID INT, @SGCount INT, @ServerName VARCHAR(50) AS Set @SID = (SELECT ServerID FROM dbo.Servers WHERE ServerName = @ServerName) Set @top = (SELECT sum(Children) FROM dbo.ExchangeSG WHERE ServerID = @SID) Set @SGCount = (SELECT SGCount FROM dbo.Servers WHERE ServerID = @SID) SET ROWCOUNT @top SELECT dbo.ExchangeMSData.*, dboExchangeMailStore.*, dbo.GetExchSGInfo(@SID,@SGCount) As ExchangeSG, dbo.Servers.* FROM dbo.Servers INNER JOIN ExchangeSG ON dbo.Servers.ServerID = ExchangeSG.ServerID INNER JOIN dbo.ExchangeMailStore ON ExchangeSG.StorageGroupID = dbo.ExchangeMailStore.StorageGroupID INNER JOIN dbo.ExchangeMSData ON dbo.ExchangeMailStore.MailstoreID = dbo.ExchangeMSData.MailstoreID WHERE (dbo.Servers.ServerName = @ServerName) ORDER BY dbo.ExchangeMSData.[TimeStamp] DESC, dbo.ExchangeSG.[TimeStamp] DESC SET ROWCOUNT 0 And the Function: SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE FUNCTION [dbo].[GetExchSGInfo] ( @SID INT, @SGCount INT ) RETURNS TABLE AS RETURN ( SELECT TOP (@SGCount) * FROM dbo.ExchangeSG WHERE ServerID = @SID ORDER BY [TimeStamp] ) Can anyone help me? Thanks.
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Multi Statement Table-valued UDF Without Declaring Columns?
Hey I have created a multi-statement table valued function alter function fn_x(@x int)returns @tbl table ( position int identity primary key, i int) as begin insert into @tbl values (@x) insert into @tbl values (@x) insert into @tbl values (@x) insert into @tbl values (@x) returnend Is it possible skipping the definition of the table columns (the light blue part)?I need to return a different structure based on a parameter.Dropping those lines throws an error "incorrect syntax near 'as'" The other solution is declaring each udf separately as one statement udf.Thanks
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Table Valued Functions - Yield Return Error
So I was creating a new table-valued function today which queries some data from a preexisting table. Since this is my first table-valued function, I decided to check out some of the examples and see what I can figure out. One particular example helped me out a bit until I ran into some data access issues... http://msdn2.microsoft.com/en-us/library/ms165054.aspx So I create my function: [SqlFunction(DataAccess = DataAccessKind.Read,SystemDataAccess=SystemDataAccessKind.Read,FillRowMethodName = "FillMyRow",TableDefinition ="p1 int, p2 int"] public static IEnumerable getMyTable() { using (SqlConnection conn = ....) { using (SqlCommand command = conn.CreateCommand()) { ///.... populate command text, open connection using (SqlDataReader rdr = command.ExecuteReader()) { while (rdr.Read()) { customObject1 o = new customObject1(); ///... populate o's parameters from reader ... yield return o; } } } } public static void FillMyRow( object source, out int p1, out int p2) { customObject1 f = (customObject1)source; p1 = f.p1; p2 = f.p2; } Notice, this example yield returns the value o upon each iteration of the reader. Despite the fact that the DataAccess is set to Read I still get the error... An error occurred while getting new row from user defined Table Valued Function : System.InvalidOperationException: Data access is not allowed in this context. Either the context is a function or method not marked with DataAccessKind.Read or SystemDataAccessKind.Read, is a callback to obtain data from FillRow method of a Table Valued Function, or is a UDT validation method. I did however get past this error, by creating a collection of customObject1, populated it within the while(rdr.Read()) loop, then return the collection after closing the connection, command and reader. I assume this error has something to do with the fact that you can't yield return results from within an open reader. Is this error right though in this case? Whats causing it to throw a InvOp Exception? Or is this a bug? Thanks for the attention.
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Differences Between SQL Stored Procedures And Table-valued Functions
I am a bit confused by the difference between a stored procedure and a table-valued function. Can somebody please either give me a simple explanation, or point me at something I can read. I thought I had it worked out, and had coded some action queries as stored procedures, and I wrote a table-valued function that was effectively an encapsulated SELECT so that SELECT * FROM Spouse(@ID) worked fine. Then I wanted to use a function SpousePair, that was similar to Spouse, to power a Gridview. I discovered that I couldn't. It seems that a SQLDataSource requires either a SELECT statement or a stored procedure. So I wrote a stored procedure SpousePair(@ID1, @ID2). I find that whereas I tested Spouse with SELECT * FROM SPOUSE(@ID) I tested SpousePair with EXEC SpousePair @ID1 @id2 Now I want to combine these: if I could I would write SELECT * FROM SPOUSE(@ID) WHERE SPOUSEID NOT IN (SELECT SPOUSEID FROM SpousePair(@ID1, @ID2)) However this is invalid because you can't put a stored procedure in a Select statement, and SELECT .... NOT IN (EXEC SpousePair @ID1 @ID2) is also invalid. Is there any alternative to creating a table-valued function, SpousePairA, that is identical to SpousePair but coded as a function. I'm reluctant to do this because then I'll have two bits of quite complicated SQL logic to maintain.
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