How To Use User Defined Variables As Table Names In SSIS

Dec 4, 2007

I am a SSIS novice, and need help to do the following:

Every day a Table is generated by the system of format XR+present Year + present month + present day. My task is pretty simple. I am to devise a SSIS package that will import this table on to a different server.

I have defined the variable as user defined variable. I am also able to specify the variable in OLE db source editor -> Data Access Mode : Table name or view name variable. When I am click the 'Columns' feature, I get the following error

TITLE: Microsoft Visual Studio
------------------------------
Error at Data Flow Task [OLE DB Source [1]]: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80040E37.
Error at Data Flow Task [OLE DB Source [1]]: Opening a rowset for "xr+ convert(char(8),getdate(), 112)" failed. Check that the object exists in the database.
------------------------------
ADDITIONAL INFORMATION:
Exception from HRESULT: 0xC02020E8 (Microsoft.SqlServer.DTSPipelineWrap)
------------------------------
BUTTONS:
OK
------------------------------

In short can any one tell me a correct way of using a table name as variable in
Data Access Mode : Table name or view name variable ?

One other question: can I make use of a dynamic SQL in Execute SQL Task? If yes, how do I write the query

exec( 'select * from ' + @table)

or just

select * from @table

Any suggestions will be appreciated.






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User Defined Variables

Jan 5, 2007

I am running a procedure that declares a table with a user defined variable called ZipCodes8000. This datatype is on the systypes table as a valid datatype that we created. Here is the code and the error that is returned. Can anyone help me understand why I receive the error that I do.

Code:

DECLARE @SortPlanBinZipCodeRanges TABLE
(
SortPlanBinZipCodeRangeIDINT IDENTITY (1, 1) NOT NULL,
SortPlanBinID INT NULL,
SortPlanID INT NULL,
BinTypeID TINYINT NULL,
BinFlagTypeID TINYINT NULL,
BinNumber INT NULL,
ZipCodeRanges ZipCodes8000 NULL
)


error:
Msg 2715, Level 16, State 7, Line 1
Column or parameter #7: Cannot find data type ZipCodes8000.

Thank you in advance.

Todd

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Oct 19, 2006

I want to pass user-defined column names to views or procedures



I am using SQL Server 2005 Express.



I tried this.



CREATE PROCEDURE @userDefinedColumn varChar(10) = 'My_Column'

select @userDefinedColumn, count(ID) as [Total Records] from My_Table

GROUP BY @userDefinedColumn



This was not accepted. It won't allow a user defined parameter in the group by.



But I need to pass user defined parameters to views as well.

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Mar 24, 2004

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Jul 20, 2005

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Mar 10, 2001

I have a database and I want to retrieve informations about all tables
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Thank you.

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Nov 14, 2005

I have a cursor which populates a variable with the name of each user table within my DB.
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Query analyzer tells me that there's incorrect syntax near the keyword 'INTO'.
This seems fair enough to me as I assume it's trying to put the data into the variable rather than the table name which is held within the variable. Does any know how I can get around this?
Are there any alternative ways of copying the table structure (preferable without the data)?

BTW both variables are of type char(100)

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Apr 10, 2008

How do I use table names stored in variables in stored procedures?




Code Snippetif (select count(*) from @tablename) = 0 or (select count(*) from @tablename) = 1000000





I receive the error 'must declare table variable '@tablename''

I've looked into table variables and they are not what I would require to accomplish what is needed.
After browsing through the forums I believe I need to use dynamic sql particuarly involving sp_executesql. However, I am pretty new at sql and do not really understand how to use this and receive an output parameter from it(msdn kind of confuses me too). I am tryin got receive an integer count of the records from a certain table which can change to anything depending on what the user requires.




Code Snippet

if exists(Select * from sysobjects where name = @temptablename)
drop table @temptablename




It does not like the 'drop table @temptablename' part here. This probably wouldn't be an issue if I could get temporary tables to work, however when I use temporary tables i get invalid object '#temptable'.

Heres what the stored procedure does.
I duplicate a table that is going to be modified by using 'select into temptable'
I add the records required using 'Insert into temptable(Columns) Select(Columns)f rom TableA'
then I truncate the original table that is being modified and insert the temporary table into the original.

Heres the actual SQL query that produces the temporary table error.




Code Snippet
Select * into #temptableabcd from TableA

Insert into #temptableabcd(ColumnA, ColumnB,Field_01, Field_02)
SELECT ColumnA, ColumnB, Sum(ABC_01) as 'Field_01', Sum(ABC_02) as 'Field_02',
FROM TableB
where ColumnB = 003860
Group By ColumnA, ColumnB

TRUNCATE TABLE TableA

Insert into TableA(ColumnA, ColumnB,Field_01, Field_02)
Select ColumnA, ColumnB, Sum(Field_01) as 'Field_01', Sum('Field_02) as 'Field_02',
From #temptableabcd
Group by ColumnA, ColumnB




The above coding produces

Msg 208, Level 16, State 0, Line 1

Invalid object name '#temptableabcd'.

Why does this seem to work when I use an actual table? With an actual table the SQL runs smoothly, however that creates the table names as a variable problem from above. Is there certain limitation with temporary tables in stored procedures? How would I get the temporary table to work in this case if possible?

Thanks for the help.


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quote:
DECLARE
@a_tmptbl varchar(15),
@a_fieldid1 varchar(15)

set @a_fieldid1 = 'newFieldid'
set @a_tmptbl = 'newTable'

create table @a_tmptbl ( @a_fieldid1 varchar(15), value float, counter INT);

insert into @a_tmptbl values ( "foobar", 21.76, 1);

select * from @a_tmptbl;

The error I am getting is:

quote:Server: Msg 170, Level 15, State 1, Line 8
Line 8: Incorrect syntax near '@a_tmptbl'.
Server: Msg 137, Level 15, State 1, Line 10
Must declare the variable '@a_tmptbl'.
Server: Msg 137, Level 15, State 1, Line 12
Must declare the variable '@a_tmptbl'.


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Create Procedure VerifySubjectNum
(@forum_ID VARCHAR(10), @subject_num INT)
As
If Exists
(SELECT subject_num FROM @forum_ID WHERE subject_num = @subject_num)
Return 1
Else
Return 0

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@DayName varchar,@DayIDName varchar
AS
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END
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Regards,

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However, it cannot be compiled coz of this error:
Error 2715: Column or parameter #1: Cannot find data type udt_PRNum.

This user-defined data type is created in a user database only.

I tried to created the user-defined type into BOTH tempdb and master but same error.

How can i resolove it?
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In the past,
i use this method:
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and cerate udt_PRNum in tempdb only could solve it.

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I wonder if I need to establish a user-defined table type ?I really just want a pointer to the table, and not to have to create a new copy.

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Ideally I would like to be able to have a # of columns and directions in this table like so:

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Since our database can be a bit sizable, I'd also like to use Common Table Expressions so I can page through them fairly easy.So my standard cte is something like this:

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So where 'ORDER BY name' is I'd like to use the @OrderByClause in some sort of dynamic way. I've tried all kinds of stuff but even something like this doesn't get the actual column name I need

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I may be chasing the wrong stick, but outside of dynamic sql, is something like this possible?

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CREATE TABLE tUser (UserID int PRIMARY KEY, UserName varchar(50))
CREATE TABLE tAcctGroup (AcctGroupID int PRIMARY KEY, AcctGroupName varchar(50))
CREATE TABLE tAcct (AcctID int PRIMARY KEY, AcctGroupID int, AcctName varchar(50))
CREATE TABLE tMapUserToGroup (UserID int, AcctGroupID int)
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INSERT INTO tAcctGroup VALUES (1, 'NY')
INSERT INTO tAcct VALUES (11, 1, 'New York City')
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INSERT INTO tAcctGroup VALUES (2, 'GA')
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INSERT INTO @tAcct
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RETURN
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I know that I can do:
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But I want the equivalent of:
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-----------------------------
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22 Savannah
23 Augusta
41 Los Angeles
42 San Francisco

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@strFieldNamenvarchar(255),
@strTableName nvarchar(255)

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DECLARE @maxID int


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RETURNS int AS
BEGIN
DECLARE @emp_count AS int
declare @declaration varchar(100)

[Code] ....

The errors I am getting are as follows:

Msg 102, Level 15, State 1, Procedure count_rows, Line 3
Incorrect syntax near 'RETURNS'.
Msg 102, Level 15, State 1, Procedure count_rows, Line 10
Incorrect syntax near '@declaration'.
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Or really should drop and create again?

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Hello,

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What we have found in our implementations of variations of this code on three seperate servers is that as the rowset grows, the length of time required to return the rows grows exponentially. With 10 columns, we have maxed out at approximately 2 500 rows. Once our rowset hit that size, no rows were being returned and the queries were timing out.

Here is a chart comparing the time elapsed to the rows returned at that time for a sample trial i ran:

Sec / Actual Rows Returned
0 0
10 237
20 447
30 481
40 585
50 655
60 725
70 793
80 860
90 940
100 1013
110 1081
120 1115
130 1151
140 1217
150 1250
160 1325
170 1325
180 1430
190 1467
200 1502
210 1539
220 1574
230 1610
240 1645
250 1679
260 1715
270 1750
280 1787
290 1822
300 1857
310 1892
320 1923
330 1956
340 1988
350 1988
360 2022
370 2060
380 2094
390 2094
400 2130
410 2160
420 2209
430 2237
440 2237
450 2274
460 2274
470 2308
480 2342
490 2380
500 2380
510 2418
520 2418
530 2451
540 2480
550 2493
560 2531
570 2566

It took 570 seconds (just over 9 1/2 minutes to return 2566 rows).

The minute breakdown during my trial is as follows:
1 = 655 (+ 655)
2 = 1081 (+ 426)
3 = 1325 (+244)
4 = 1610 (+285)
5 = 1822 (+212)
6 = 1988 (+166)
7 = 2160 (+172)
8 = 2308 (+148)
9 = 2451 (+143)

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Allow me to explain the code in further detail:

[SqlFunction(FillRowMethodName = "FillListItem")]
public static IEnumerable DiscoverListItems(...)
{

ArrayList listItems = new ArrayList();

SPToSQLService service = new SPToSQLService();

[...]

DataSet itemQueryResult = service.DoItemQuery(...); // This is a synchronous call returning a DataSet from the Web Service

//Load the DS to the ArrayList


return listItems;
}


public static void FillListItem(object obj, out string col1, out string col2, out string col3, ...)
{

ArrayList item = (ArrayList) obj;


col1 = item.Count > 0 ? (string) item[0] : "";
col2 = item.Count > 0 ? (string) item[1] : "";
col3 = item.Count > 0 ? (string) item[2] : "";
[...]
}

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Thanks,

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Apr 2, 2008

hai,

how can i identify the function is user defined or the system defined function....................

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