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Dynamic SQL: IN/JOIN Expand / Collapse
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Posted Friday, April 05, 2013 9:36 AM
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I'm trying to get two drop-down multi-valued parameters working in my report. If I hard-code my values into my query, then the report runs as it should. When I switch out the hard-coded values for parameters then it does not work. I am using dynamic SQL.

Report works with...
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN(''OCA'') AND AL1.status_code IN(''CMP'',''CNF'))'

Report does not work with...
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN('' + @ResType + '') AND AL1.status_code IN('' + @StatusCode + ''))'

With the latter code I am using =Join(Parameters!ResType.Value,"'',''") and =Join(Parameters!StatusCode.Value,"'',''") on the parameters.

Where am I going wrong?


"Nicholas"
Post #1439302
Posted Friday, April 05, 2013 9:58 AM


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5280_Lifestyle (4/5/2013)
I'm trying to get two drop-down multi-valued parameters working in my report. If I hard-code my values into my query, then the report runs as it should. When I switch out the hard-coded values for parameters then it does not work. I am using dynamic SQL.

Report works with...
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN(''OCA'') AND AL1.status_code IN(''CMP'',''CNF'))'

Report does not work with...
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN('' + @ResType + '') AND AL1.status_code IN(' + @StatusCode + ''))'

With the latter code I am using =Join(Parameters!ResType.Value,"'',''") and =Join(Parameters!StatusCode.Value,"'',''") on the parameters.

Where am I going wrong?


First, you need this:


USE [SandBox]
GO

/****** Object: UserDefinedFunction [dbo].[DelimitedSplit8K] Script Date: 04/05/2013 09:53:41 ******/
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[DelimitedSplit8K]') AND type in (N'FN', N'IF', N'TF', N'FS', N'FT'))
DROP FUNCTION [dbo].[DelimitedSplit8K]
GO

USE [SandBox]
GO

/****** Object: UserDefinedFunction [dbo].[DelimitedSplit8K] Script Date: 04/05/2013 09:53:41 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE FUNCTION [dbo].[DelimitedSplit8K]
/**********************************************************************************************************************
Purpose:
Split a given string at a given delimiter and return a list of the split elements (items).

Notes:
1. Leading a trailing delimiters are treated as if an empty string element were present.
2. Consecutive delimiters are treated as if an empty string element were present between them.
3. Except when spaces are used as a delimiter, all spaces present in each element are preserved.

Returns:
iTVF containing the following:
ItemNumber = Element position of Item as a BIGINT (not converted to INT to eliminate a CAST)
Item = Element value as a VARCHAR(8000)

Statistics on this function may be found at the following URL:
http://www.sqlservercentral.com/Forums/Topic1101315-203-4.aspx

CROSS APPLY Usage Examples and Tests:
--=====================================================================================================================
-- TEST 1:
-- This tests for various possible conditions in a string using a comma as the delimiter. The expected results are
-- laid out in the comments
--=====================================================================================================================
--===== Conditionally drop the test tables to make reruns easier for testing.
-- (this is NOT a part of the solution)
IF OBJECT_ID('tempdb..#JBMTest') IS NOT NULL DROP TABLE #JBMTest
;
--===== Create and populate a test table on the fly (this is NOT a part of the solution).
-- In the following comments, "b" is a blank and "E" is an element in the left to right order.
-- Double Quotes are used to encapsulate the output of "Item" so that you can see that all blanks
-- are preserved no matter where they may appear.
SELECT *
INTO #JBMTest
FROM ( --# & type of Return Row(s)
SELECT 0, NULL UNION ALL --1 NULL
SELECT 1, SPACE(0) UNION ALL --1 b (Empty String)
SELECT 2, SPACE(1) UNION ALL --1 b (1 space)
SELECT 3, SPACE(5) UNION ALL --1 b (5 spaces)
SELECT 4, ',' UNION ALL --2 b b (both are empty strings)
SELECT 5, '55555' UNION ALL --1 E
SELECT 6, ',55555' UNION ALL --2 b E
SELECT 7, ',55555,' UNION ALL --3 b E b
SELECT 8, '55555,' UNION ALL --2 b B
SELECT 9, '55555,1' UNION ALL --2 E E
SELECT 10, '1,55555' UNION ALL --2 E E
SELECT 11, '55555,4444,333,22,1' UNION ALL --5 E E E E E
SELECT 12, '55555,4444,,333,22,1' UNION ALL --6 E E b E E E
SELECT 13, ',55555,4444,,333,22,1,' UNION ALL --8 b E E b E E E b
SELECT 14, ',55555,4444,,,333,22,1,' UNION ALL --9 b E E b b E E E b
SELECT 15, ' 4444,55555 ' UNION ALL --2 E (w/Leading Space) E (w/Trailing Space)
SELECT 16, 'This,is,a,test.' --E E E E
) d (SomeID, SomeValue)
;
--===== Split the CSV column for the whole table using CROSS APPLY (this is the solution)
SELECT test.SomeID, test.SomeValue, split.ItemNumber, Item = QUOTENAME(split.Item,'"')
FROM #JBMTest test
CROSS APPLY dbo.DelimitedSplit8K(test.SomeValue,',') split
;
--=====================================================================================================================
-- TEST 2:
-- This tests for various "alpha" splits and COLLATION using all ASCII characters from 0 to 255 as a delimiter against
-- a given string. Note that not all of the delimiters will be visible and some will show up as tiny squares because
-- they are "control" characters. More specifically, this test will show you what happens to various non-accented
-- letters for your given collation depending on the delimiter you chose.
--=====================================================================================================================
WITH
cteBuildAllCharacters (String,Delimiter) AS
(
SELECT TOP 256
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',
CHAR(ROW_NUMBER() OVER (ORDER BY (SELECT NULL))-1)
FROM master.sys.all_columns
)
SELECT ASCII_Value = ASCII(c.Delimiter), c.Delimiter, split.ItemNumber, Item = QUOTENAME(split.Item,'"')
FROM cteBuildAllCharacters c
CROSS APPLY dbo.DelimitedSplit8K(c.String,c.Delimiter) split
ORDER BY ASCII_Value, split.ItemNumber
;
-----------------------------------------------------------------------------------------------------------------------
Other Notes:
1. Optimized for VARCHAR(8000) or less. No testing or error reporting for truncation at 8000 characters is done.
2. Optimized for single character delimiter. Multi-character delimiters should be resolvedexternally from this
function.
3. Optimized for use with CROSS APPLY.
4. Does not "trim" elements just in case leading or trailing blanks are intended.
5. If you don't know how a Tally table can be used to replace loops, please see the following...
http://www.sqlservercentral.com/articles/T-SQL/62867/
6. Changing this function to use NVARCHAR(MAX) will cause it to run twice as slow. It's just the nature of
VARCHAR(MAX) whether it fits in-row or not.
7. Multi-machine testing for the method of using UNPIVOT instead of 10 SELECT/UNION ALLs shows that the UNPIVOT method
is quite machine dependent and can slow things down quite a bit.
-----------------------------------------------------------------------------------------------------------------------
Credits:
This code is the product of many people's efforts including but not limited to the following:
cteTally concept originally by Iztek Ben Gan and "decimalized" by Lynn Pettis (and others) for a bit of extra speed
and finally redacted by Jeff Moden for a different slant on readability and compactness. Hat's off to Paul White for
his simple explanations of CROSS APPLY and for his detailed testing efforts. Last but not least, thanks to
Ron "BitBucket" McCullough and Wayne Sheffield for their extreme performance testing across multiple machines and
versions of SQL Server. The latest improvement brought an additional 15-20% improvement over Rev 05. Special thanks
to "Nadrek" and "peter-757102" (aka Peter de Heer) for bringing such improvements to light. Nadrek's original
improvement brought about a 10% performance gain and Peter followed that up with the content of Rev 07.

I also thank whoever wrote the first article I ever saw on "numbers tables" which is located at the following URL
and to Adam Machanic for leading me to it many years ago.
http://sqlserver2000.databases.aspfaq.com/why-should-i-consider-using-an-auxiliary-numbers-table.html
-----------------------------------------------------------------------------------------------------------------------
Revision History:
Rev 00 - 20 Jan 2010 - Concept for inline cteTally: Lynn Pettis and others.
Redaction/Implementation: Jeff Moden
- Base 10 redaction and reduction for CTE. (Total rewrite)

Rev 01 - 13 Mar 2010 - Jeff Moden
- Removed one additional concatenation and one subtraction from the SUBSTRING in the SELECT List for that tiny
bit of extra speed.

Rev 02 - 14 Apr 2010 - Jeff Moden
- No code changes. Added CROSS APPLY usage example to the header, some additional credits, and extra
documentation.

Rev 03 - 18 Apr 2010 - Jeff Moden
- No code changes. Added notes 7, 8, and 9 about certain "optimizations" that don't actually work for this
type of function.

Rev 04 - 29 Jun 2010 - Jeff Moden
- Added WITH SCHEMABINDING thanks to a note by Paul White. This prevents an unnecessary "Table Spool" when the
function is used in an UPDATE statement even though the function makes no external references.

Rev 05 - 02 Apr 2011 - Jeff Moden
- Rewritten for extreme performance improvement especially for larger strings approaching the 8K boundary and
for strings that have wider elements. The redaction of this code involved removing ALL concatenation of
delimiters, optimization of the maximum "N" value by using TOP instead of including it in the WHERE clause,
and the reduction of all previous calculations (thanks to the switch to a "zero based" cteTally) to just one
instance of one add and one instance of a subtract. The length calculation for the final element (not
followed by a delimiter) in the string to be split has been greatly simplified by using the ISNULL/NULLIF
combination to determine when the CHARINDEX returned a 0 which indicates there are no more delimiters to be
had or to start with. Depending on the width of the elements, this code is between 4 and 8 times faster on a
single CPU box than the original code especially near the 8K boundary.
- Modified comments to include more sanity checks on the usage example, etc.
- Removed "other" notes 8 and 9 as they were no longer applicable.

Rev 06 - 12 Apr 2011 - Jeff Moden
- Based on a suggestion by Ron "Bitbucket" McCullough, additional test rows were added to the sample code and
the code was changed to encapsulate the output in pipes so that spaces and empty strings could be perceived
in the output. The first "Notes" section was added. Finally, an extra test was added to the comments above.

Rev 07 - 06 May 2011 - Peter de Heer, a further 15-20% performance enhancement has been discovered and incorporated
into this code which also eliminated the need for a "zero" position in the cteTally table.
**********************************************************************************************************************/
--===== Define I/O parameters
(@pString VARCHAR(8000), @pDelimiter CHAR(1))
RETURNS TABLE WITH SCHEMABINDING AS
RETURN
--===== "Inline" CTE Driven "Tally Table" produces values from 0 up to 10,000...
-- enough to cover NVARCHAR(4000)
WITH E1(N) AS (
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1
), --10E+1 or 10 rows
E2(N) AS (SELECT 1 FROM E1 a, E1 b), --10E+2 or 100 rows
E4(N) AS (SELECT 1 FROM E2 a, E2 b), --10E+4 or 10,000 rows max
cteTally(N) AS (--==== This provides the "base" CTE and limits the number of rows right up front
-- for both a performance gain and prevention of accidental "overruns"
SELECT TOP (ISNULL(DATALENGTH(@pString),0)) ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) FROM E4
),
cteStart(N1) AS (--==== This returns N+1 (starting position of each "element" just once for each delimiter)
SELECT 1 UNION ALL
SELECT t.N+1 FROM cteTally t WHERE SUBSTRING(@pString,t.N,1) = @pDelimiter
),
cteLen(N1,L1) AS(--==== Return start and length (for use in substring)
SELECT s.N1,
ISNULL(NULLIF(CHARINDEX(@pDelimiter,@pString,s.N1),0)-s.N1,8000)
FROM cteStart s
)
--===== Do the actual split. The ISNULL/NULLIF combo handles the length for the final element when no delimiter is found.
SELECT ItemNumber = ROW_NUMBER() OVER(ORDER BY l.N1),
Item = SUBSTRING(@pString, l.N1, l.L1)
FROM cteLen l
;

GO



Then you will need to incorporate that into your code. Unfortunately I am having a brain dead moment and can't come up with the solution as you didn't really provide enough info for me to work with.

It is basically used like this:

select Item from dbo.DelimitedSplit8K(@ResType,',');




Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

SQL Musings from the Desert Fountain Valley SQL (My Mirror Blog)
Post #1439328
Posted Friday, April 05, 2013 10:03 AM
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Full query...
DECLARE @c varchar(4000)
SET @c = '

SELECT DISTINCT AL1.user_id_entered, AL1.reservation_id, AL1.start_date, AL1.status_code, AL1.actual_minutes, AL1.scheduled_minutes,
AL1.customer_abbr, AL2.company_name, AL2.parent_company, AL1.reservation_name, AL1.product, AL1.customer_extend, AL1.category_abbr,
AL1.reason_code, CONVERT(varchar(3),AL1.start_date,100) AS StartDateMonth, YEAR(AL1.start_date) AS StartDateYear,
CASE
WHEN MONTH(AL1.start_date) = 1 THEN ''Q1''
WHEN MONTH(AL1.start_date) = 2 THEN ''Q1''
WHEN MONTH(AL1.start_date) = 3 THEN ''Q1''
WHEN MONTH(AL1.start_date) = 4 THEN ''Q2''
WHEN MONTH(AL1.start_date) = 5 THEN ''Q2''
WHEN MONTH(AL1.start_date) = 6 THEN ''Q2''
WHEN MONTH(AL1.start_date) = 7 THEN ''Q3''
WHEN MONTH(AL1.start_date) = 8 THEN ''Q3''
WHEN MONTH(AL1.start_date) = 9 THEN ''Q3''
WHEN MONTH(AL1.start_date) = 10 THEN ''Q4''
WHEN MONTH(AL1.start_date) = 11 THEN ''Q4''
WHEN MONTH(AL1.start_date) = 12 THEN ''Q4''
END AS StartDateQuarter
FROM vbus_dss.dbo.adt_reservations AL1, dbo.company AL2
WHERE (AL1.customer_abbr=AL2.company_abbr)
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN('' + @ResType + '') AND AL1.status_code IN('' + @StatusCode + ''))'

EXEC (@c)



"Nicholas"
Post #1439338
Posted Friday, April 05, 2013 10:20 AM


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5280_Lifestyle (4/5/2013)
Full query...
DECLARE @c varchar(4000)
SET @c = '

SELECT DISTINCT AL1.user_id_entered, AL1.reservation_id, AL1.start_date, AL1.status_code, AL1.actual_minutes, AL1.scheduled_minutes,
AL1.customer_abbr, AL2.company_name, AL2.parent_company, AL1.reservation_name, AL1.product, AL1.customer_extend, AL1.category_abbr,
AL1.reason_code, CONVERT(varchar(3),AL1.start_date,100) AS StartDateMonth, YEAR(AL1.start_date) AS StartDateYear,
CASE
WHEN MONTH(AL1.start_date) = 1 THEN ''Q1''
WHEN MONTH(AL1.start_date) = 2 THEN ''Q1''
WHEN MONTH(AL1.start_date) = 3 THEN ''Q1''
WHEN MONTH(AL1.start_date) = 4 THEN ''Q2''
WHEN MONTH(AL1.start_date) = 5 THEN ''Q2''
WHEN MONTH(AL1.start_date) = 6 THEN ''Q2''
WHEN MONTH(AL1.start_date) = 7 THEN ''Q3''
WHEN MONTH(AL1.start_date) = 8 THEN ''Q3''
WHEN MONTH(AL1.start_date) = 9 THEN ''Q3''
WHEN MONTH(AL1.start_date) = 10 THEN ''Q4''
WHEN MONTH(AL1.start_date) = 11 THEN ''Q4''
WHEN MONTH(AL1.start_date) = 12 THEN ''Q4''
END AS StartDateQuarter
FROM vbus_dss.dbo.adt_reservations AL1, dbo.company AL2
WHERE (AL1.customer_abbr=AL2.company_abbr)
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN('' + @ResType + '') AND AL1.status_code IN('' + @StatusCode + ''))'

EXEC (@c)



Nope, not everything. What are @OperParam and @Date_String. Trying to rewrite as a non-dynamic query to see what is going on and these don't make sense.

Perhaps if you posted the output of a PRINT @c that would show an actual sample of the SQL being generated along with the infor on the variables requested.



Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

SQL Musings from the Desert Fountain Valley SQL (My Mirror Blog)
Post #1439347
Posted Friday, April 05, 2013 11:20 AM
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@OperParam works as a drop-down menu containing =, <>, >, <, >=, <= to work with @Date_String. In my parameters folder, available parameters for @OperParam are set as Label: 'Equal To', Value: ' AL1.start_date =', Label: 'Not Equal To', Value: ' AL1.start_date =', and so on. Also in my parameters folder, @Date_String (hidden on report) available/default values are set to expression ="'" + Parameters!Date.Value + "'". Another parameter was created in the folder called @Date (visible to report user).

I tried using PRINT (@c) in the SSRS Query Designer but when I use the current query, nothing is output. When switch to the hard-coded multi-values then I get an error message saying that the operation cannot be completed.


"Nicholas"
Post #1439380
Posted Friday, April 05, 2013 11:24 AM


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Bottom line, there isn't enough informatiion in your posts for me to do anything. I don't know what an actually query is supposed to look like, I don't know what values are being passed in to the variables being used to create the dynamic sql.

I can't go any further without all the information needed to recreate your problem. All I can to is guess and I really don't want to do that as there are also other changes that can be made to this query.




Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

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Post #1439382
Posted Friday, April 05, 2013 12:19 PM


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Lacking further information this is the best I can provide. You will have figure out the rest.


declare @SQLCmd nvarchar(max),
@sparams nvarchar(max);

set @sparams = N'@ResType varchar(8000), @StatusCode varchar(max)';

set @SQLCmd =
N'
SELECT DISTINCT
AL1.user_id_entered,
AL1.reservation_id,
AL1.start_date,
AL1.status_code,
AL1.actual_minutes,
AL1.scheduled_minutes,
AL1.customer_abbr,
AL2.company_name,
AL2.parent_company,
AL1.reservation_name,
AL1.product,
AL1.customer_extend,
AL1.category_abbr,
AL1.reason_code,
LEFT(DATENAME(MONTH, AL1.start_date), 3) AS StartDateMonth,
YEAR(AL1.start_date) AS StartDateYear,
''Q'' + cast(datepart(quarter,AL1.start_date) as varchar) as StartDateQuarter
FROM
vbus_dss.dbo.adt_reservations AL1
inner join dbo.company AL2
on (AL1.customer_abbr = AL2.company_abbr)
WHERE
-- ('' + @OperParam + @Date_String + '' AND -- this part commented as I do not know what is trying to accomplish
AL1.reservation_type IN (select Item from dbo.DelimitedSplit8K(@ResType,'','')) AND
AL1.status_code IN (select Item from dbo.DelimitedSplit8K(@StatusCode,'',''));
';
-- Display generated code
print @SQLCmd;
-- Execute generated code
exec sp_executesql @SQLCmd, @sparams, @ResType, @StatusCode;





Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

SQL Musings from the Desert Fountain Valley SQL (My Mirror Blog)
Post #1439411
Posted Friday, April 05, 2013 2:47 PM
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It's working now. The following slice of pie was causing a hick-up earlier; I needed to add another single quote to each side of the ResType and StatusCode parameters.

Non-working code:
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN('' + @ResType + '') AND AL1.status_code IN('' + @StatusCode + ''))'

and the Join I used looked like this...
=Join(Parameters!ResType.Value,"'',''")




Working code:
AND (' + @OperParam + @Date_String + ' AND AL1.reservation_type IN(''' + @ResType + ''') AND AL1.status_code IN(''' + @StatusCode + '''))'

and that join needed to be changed to this...
=Join(Parameters!ResType.Value,"','")


"Nicholas"
Post #1439492
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