What To Do With An Empty Result Set
Mar 13, 2008
I'm querying my database with a datetime constraint, only picking up records newer than the last ETL. Although I doubt it would ever happen I was going to put a check in the data flow to trap the case when NO rows were read due to inactivity in the OLAP. I set up a row count and tried to trap it. Apparently if you use an OLE DB source to get a result set and that result set is empty, the program flow bypasses everything and keeps running until it hits something causing an error, like an SQL Insert or Update command.
Is there any way to trap this condition? Currently it is going to cause the program to fail which will cause a snapshot restore (after kicking everyone out of the database).
Thanks.
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Mar 23, 2007
Enviroment
O.S. = Windows Small Business 2003
DB = SQL 2000 Server with SP3a
No windows or third party firewalls that are set up.
Problem:
When performing a Link Table in MS Access 2003 it runs into this error message "The Microsoft Jet Database engine could not find the object 'zstblSetup' (the name of our table). Make sure the object exists and that you spell its name and path name correctly.
But when we try to another server but at this time the SQL 2000 is patch with SP4, the link table works fine in Ms Access 2003. So we decided to use SQL Profiler to trace the cause of the problem. It so happen when sp_columns N'zstblSetup' is called no result is returned. Going through the code in sp_columns, it calls spt_datatype_info. When calling spt_datatype_info, again no record is returned. We suspect that spt_datatype_info is the culprit of the problem that's why Link Table in MS Access 2003 doesn't work.
Calling the sp_columns and spt_datatype_info into the working server that I mentioned aboved can return results. The way I understand it spt_datatype_info holds the SQL data type info.
My question is if we apply SP4 in the server that is problematic will this problem be resolved? Or are there any possible reason to solve this problem?
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Apr 22, 2004
Hello guys,
MS SQL server 2000 behavies strange with big queries that involves relatively large number of tables:
If I just enumerate columns I want to receive, the result set is empty. Adding * to the column list without making any change to where clause seems to solve the problem but I guess it's not the best practice.
The most amazing is that this behavior is not stable, so I suppose there's something to deal with server itself, not the application.
Has anybody suffered this problem and what solution was adopted?
Thanks for any information you can provide.
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Aug 1, 2007
hi,
i want to execute a finctionX() based on the returned resultset of SQLDataSource. For example, if the SELECT command returns nothing based on a specific search criteria then I want to execute functionX(). Currently, I have a string that displays "No Result" in the GridView in such case.
How to catch the resultset of SQLDataSource?
-nero
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Oct 7, 2014
I am trying to create a SSIS package that will create a csv of a dataset for daily events in the database. However there will be days that there was no activity and thus an empty dataset. The package still runs fine but I want to stop the package if the dataset is empty.
FLOW:
DATA FLOW task: get daily data and put in CSV file
FTP TASK: upload the file to FTP server
MAIL/Copy file task: Move the file and then send a confirmation mail on task completion status.
Pretty simple and it all works great, I do have a few complexities in there. What I would like to add and I am at a loss is at the beginning, if the OLE DB Task resultset is empty then move to Mail Task otherwise process normally. I have tried conditional split, derived columns, the only thing I haven't tried in Script task and am not sure about that yet.
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Jul 20, 2005
I need to send the result of a procedure to an update statement.Basically updating the column of one table with the result of aquery in a stored procedure. It only returns one value, if it didnt Icould see why it would not work, but it only returns a count.Lets say I have a sproc like so:create proc sp_countclients@datecreated datetimeasset nocount onselect count(clientid) as countfrom clientstablewhere datecreated > @datecreatedThen, I want to update another table with that value:Declare @dc datetimeset @dc = '2003-09-30'update anothertableset ClientCount = (exec sp_countclients @dc) -- this line errorswhere id_ = @@identityOR, I could try this, but still gives me error:declare @c intset @c = exec sp_countclients @dcWhat should I do?Thanks in advance!Greg
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Dec 26, 2007
I have an Execute SQL Task that executes "select count(*) as Row_Count from xyztable" from an Oracle Server. I'm trying to assign the result to a variable. However when I try to execute I get an error:
[Execute SQL Task] Error: An error occurred while assigning a value to variable "RowCount": "Unsupported data type on result set binding Row_Count.".
Which data type should I use for the variable, RowCount? I've tried Int16, Int32, Int64.
Thanks!
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Dec 11, 2007
Hi all,
I copied the following code from Microsoft SQL Server 2005 Online (September 2007):
UDF_table.sql:
USE AdventureWorks;
GO
IF OBJECT_ID(N'dbo.ufnGetContactInformation', N'TF') IS NOT NULL
DROP FUNCTION dbo.ufnGetContactInformation;
GO
CREATE FUNCTION dbo.ufnGetContactInformation(@ContactID int)
RETURNS @retContactInformation TABLE
(
-- Columns returned by the function
ContactID int PRIMARY KEY NOT NULL,
FirstName nvarchar(50) NULL,
LastName nvarchar(50) NULL,
JobTitle nvarchar(50) NULL,
ContactType nvarchar(50) NULL
)
AS
-- Returns the first name, last name, job title, and contact type for the specified contact.
BEGIN
DECLARE
@FirstName nvarchar(50),
@LastName nvarchar(50),
@JobTitle nvarchar(50),
@ContactType nvarchar(50);
-- Get common contact information
SELECT
@ContactID = ContactID,
@FirstName = FirstName,
@LastName = LastName
FROM Person.Contact
WHERE ContactID = @ContactID;
SELECT @JobTitle =
CASE
-- Check for employee
WHEN EXISTS(SELECT * FROM HumanResources.Employee e
WHERE e.ContactID = @ContactID)
THEN (SELECT Title
FROM HumanResources.Employee
WHERE ContactID = @ContactID)
-- Check for vendor
WHEN EXISTS(SELECT * FROM Purchasing.VendorContact vc
INNER JOIN Person.ContactType ct
ON vc.ContactTypeID = ct.ContactTypeID
WHERE vc.ContactID = @ContactID)
THEN (SELECT ct.Name
FROM Purchasing.VendorContact vc
INNER JOIN Person.ContactType ct
ON vc.ContactTypeID = ct.ContactTypeID
WHERE vc.ContactID = @ContactID)
-- Check for store
WHEN EXISTS(SELECT * FROM Sales.StoreContact sc
INNER JOIN Person.ContactType ct
ON sc.ContactTypeID = ct.ContactTypeID
WHERE sc.ContactID = @ContactID)
THEN (SELECT ct.Name
FROM Sales.StoreContact sc
INNER JOIN Person.ContactType ct
ON sc.ContactTypeID = ct.ContactTypeID
WHERE ContactID = @ContactID)
ELSE NULL
END;
SET @ContactType =
CASE
-- Check for employee
WHEN EXISTS(SELECT * FROM HumanResources.Employee e
WHERE e.ContactID = @ContactID)
THEN 'Employee'
-- Check for vendor
WHEN EXISTS(SELECT * FROM Purchasing.VendorContact vc
INNER JOIN Person.ContactType ct
ON vc.ContactTypeID = ct.ContactTypeID
WHERE vc.ContactID = @ContactID)
THEN 'Vendor Contact'
-- Check for store
WHEN EXISTS(SELECT * FROM Sales.StoreContact sc
INNER JOIN Person.ContactType ct
ON sc.ContactTypeID = ct.ContactTypeID
WHERE sc.ContactID = @ContactID)
THEN 'Store Contact'
-- Check for individual consumer
WHEN EXISTS(SELECT * FROM Sales.Individual i
WHERE i.ContactID = @ContactID)
THEN 'Consumer'
END;
-- Return the information to the caller
IF @ContactID IS NOT NULL
BEGIN
INSERT @retContactInformation
SELECT @ContactID, @FirstName, @LastName, @JobTitle, @ContactType;
END;
RETURN;
END;
GO
----------------------------------------------------------------------
I executed it in my SQL Server Management Studio Express and I got: Commands completed successfully. I do not know where the result is and how to get the result viewed. Please help and advise.
Thanks in advance,
Scott Chang
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Feb 13, 2001
HI,
I ran a select * from customers where state ='va', this is the result...
(29 row(s) affected)
The following file has been saved successfully:
C:outputcustomers.rpt 10826 bytes
I choose Query select to a file
then when I tried to open the customer.rpt from the c drive I got this error message. I am not sure why this happend
invalid TLV record
Thanks for your help
Ali
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May 1, 2008
As the topic suggests I need the end results to show a list of shows and their dates ordered by date DESC.
Tables I have are structured as follows:
SHOWS
showID
showTitle
SHOWACCESS
showID
remoteID
VIDEOS
videoDate
showID
SQL is as follows:
SELECT shows.showID AS showID, shows.showTitle AS showTitle,
(SELECT MAX(videos.videoFilmDate) AS vidDate FROM videos WHERE videos.showID = shows.showID)
FROM shows, showAccess
WHERE shows.showID = showAccess.showID
AND showAccess.remoteID=21
ORDER BY vidDate DESC;
I had it ordering by showTitle and it worked fine, but I need it to order by vidDate.
Can anyone shed some light on where I am going wrong?
thanks
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Aug 2, 2007
I am trying to code a WHERE xxxx IN ('aaa','bbb','ccc') requirement but it the return values for the IN keyword changes according to another column, thus the need for a CASE function.
WHERE GROUP.GROUP_ID = 2 AND DEPT.DEPT_ID = 'D' AND WORK_TYPE_ID IN ( CASE DEPT_ID WHEN 'D' THEN 'A','B','C' <---- ERROR WHEN 'F' THEN 'C','D ELSE 'A','B','C','D' END )
I kept on getting errors, like
Msg 156, Level 15, State 1, Line 44Incorrect syntax near the keyword 'WHERE'.
which leads me to assume that the CASE ... WHEN ... THEN statement does not allow mutiple values for result expression. Is there a way to get the SQL above to work or code the same logic in a different manner in just one simple SQL, and not a procedure or T-SQL script.
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Apr 7, 2015
I'm using a subquery to return a delivery charge line as a column in the result set. I want to see this delivery charge only on the first line of the results for each contract. Code and results are below.
declare @start smalldatetime
declare @end smalldatetime
set @start = '2015-03-22 00:00' -- this should be a Sunday
set @end = '2015-03-28 23:59' -- this should be the following Saturday
select di.dticket [Contract], di.ddate [Delivered], di.item [Fleet_No], di.descr [Description], dd.min_chg [Delivery_Chg], dd.last_invc_date [Delivery_Invoiced],
[code]....
In this example, I only want to see the delivery charge of 125.00 for the first line of contract HU004377. For simplicity I have only shown the lines for 1 contract here, but there would normally be many different contracts with varying numbers of lines, and I only want to see the delivery charge once for each contract.
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Mar 2, 2008
help strange result whan i do this
Code Snippet
SELECT unit_date, unit, ISNULL(NULLIF ((unit + DATEDIFF(mm, GETDATE(), unit_date)) % 4, 0), 4) AS new_unit
FROM dbo.empList
i try to get next unit value to next month
why i get this -1
on date
01/01/2008
1
-1
unit_date unit new_unit
01/02/2008
2
1
01/02/2008
1
4
01/01/2008
1
-1
01/02/2008
1
4
21/01/2008
1
-1
21/01/2008
1
-1
01/02/2008
1
4
TNX
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Sep 29, 2006
SQL Server 2000 SP4. Hoping to find a logical explanation for a certainbehavior.Consider this script:USE pubsGOIF 1 = ALL (SELECT contract FROM dbo.authors WHERE state = 'CA')PRINT 'TRUE'ELSEPRINT 'FALSE'This, as expected, prints FALSE, since not all authors in CA are undercontract. Now, if the script is changed as follows:USE pubsGOIF 1 = ALL (SELECT contract FROM dbo.authors WHERE state = '')PRINT 'TRUE'ELSEPRINT 'FALSE'then the result is TRUE. In other words, the expression evaluates to TRUEwhen the select statement produces an empty set, which doesn't make senseto me. Even more interesting, the expressionNULL = ALL (SELECT contract FROM dbo.authors WHERE state = '')still evaluates to TRUE (ANSI_NULLS is ON).Can anyone explain these results? Is this the expected behavior in the SQLstandard, or something that is specific to SQL Server? Thanks.--remove a 9 to reply by email
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Feb 26, 2007
@Names is a query string passed in, I need to count the number of records as a result of the below query/
Dim test As String
Dim sqlConnection3 As New SqlConnection("data Source=EQ-520-WEBSQLEXPRESS;Initial Catalog=CRDB.MDF;Integrated Security=True")
Dim cmd As New SqlCommand
Dim returnValue As Object
cmd.CommandText = "SELECT COUNT(ReqID) AS Expr1, LineManager FROM TblReqMain GROUP BY LineManager HAVING (LineManager = @Names)"
cmd.CommandType = Data.CommandType.Text
cmd.Connection = sqlConnection3
cmd.Parameters.Add("@Names", Data.SqlDbType.NVarChar)
sqlConnection3.Open()
cmd.Parameters("@Names").Value = test
If test = "" Then
Response.Write("An error occured")
Exit Sub
Else
returnValue = cmd.ExecuteScalar()
sqlConnection3.Close()
Label6.Text = "Number " & returnValue
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Feb 12, 2008
I am fetching records from a table and putting in a datatable using the "sqlda.fill(datatable)"
when i see the datable in "data visualizer" i find no rows.
It is confused eventhough it does not throw any error
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Mar 14, 2008
Hi, is there an equivalent to the mysql's " INSERT INTO table () VALUES ();"? The fields don't allow null values, and there is a primary key with auto increment. Any ideas?Thanks a lot.
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Jun 28, 2004
Hi i would like to know how to empty the transaction log programmaticly.
Someone got a clue? :)
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Jan 26, 2000
Hi, I have a SQL Server 6.50 - 6.50.415 (Intel X86) and one database has 8Gb of data and 2Gb of log, the problem is that
the log space used is never below 44%, even if I back it up this way:
DUMP TRANSACTION DBName TO DBNAME_log_930 VOLUME = 'SS0003' WITH NOUNLOAD , STATS = 10, INIT , NOSKIP
This should clean the log, right?
I check for open transactions via: dbcc opentran (GMS), but there aren't.
The way I check for the log space used is: dbcc sqlperf(logspace)
The recover interval is 5.
Any Ideas?
Thank You
Gaspar Gonzalez
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Jun 27, 2005
i have a sql sever2000 , and few disk.
when i am doing many opertaion , the log file is full. so how can i empty it?
sorry for my bad english
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Feb 27, 2006
I'm bcp-ing a table to a file. I've noticed that if a varchar column is empty, that both "bcp -c" and "bcp -c -k" export the empty value as #$00. Instead, I'd like to export the value as if it were null.
use monkey
go
create table tab1 (
myColumn varchar(10) null
)
go
insert into tab1 (myColumn) values ('')
go
exec master..xp_cmdshell 'bcp monkey..tab1 out D:data.csv -c -T'
go
drop table tab1
go
I've been fiddling about with other switches but so far haven't come up with a solution other than writing out the full SELECT-statement or updating the original. Anyone with an easier solution?
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May 14, 2007
hi everyone,
i was just wondering, is there anyway to empty a table...like, in mysql u can go EMPTY TABLE
and it resets the identity stuff, so your id's start at zero again...?
Thanks, Justin
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Mar 23, 2006
hello everyone,
am not sure if this is the right forum, but here goes.
We have a couple of clients we support running MS SQL, and as a rule, all db access is by SP and select statements.
However, we noticed earlier today, that a newly created account was empty. All columns except the users columns had been deleted.
1. Is there a way of checking which user account deleted the columns ?
2. Or finding out what went wrong ?
This has never happened before
Afrika
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Apr 19, 2007
Okay, so i have a procedure where i'm trying to build a left join, and for some
reason, if i store it into a procedure, it doesnt work, if i run it in query analyzer
i have no problem.
Manual Code:
create PROCEDURE search_orders_11
@SPSirvarchar(3)= null,
@debug bit = 0 AS
DECLARE @sql nvarchar(4000),
@paramlist nvarchar(4000)
if @spsir='1'
select @sql = @sql+ 'SELECT o.state_abbrv, count(o.state_abbrv) as kount FROM dbo.mortgage o left join dbo.Spanish s on o.per1_lname = s.lname'
select @sql=@sql+' WHERE 1 = 1'
SELECT @sql = @sql + ' group by o.state_abbrv ORDER BY o.state_abbrv '
here is the procedure:
create PROCEDURE search_orders_11
@SPSirvarchar(3)= null,
@debug bit = 0 AS
DECLARE @sql nvarchar(4000),
@paramlist nvarchar(4000)
if @spsir='1'
select @sql = @sql+ 'SELECT o.state_abbrv, count(o.state_abbrv) as kount FROM dbo.mortgage o left join dbo.Spanish s on o.per1_lname = s.lname'
select @sql=@sql+' WHERE 1 = 1'
SELECT @sql = @sql + ' group by o.state_abbrv ORDER BY o.state_abbrv '
here is the execution:
exec search_orders_11 @spsir=1
i get the whole command completed sucessfully, but no result. am i missing something here...
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Apr 24, 2007
Hi,
I have to change collation for certain database. I think the only solution is to export or create through scripts the empty db structure (tables, PK & FK, defaults) and thereafter import data.
Since I don't have empty structure of this database I have to create somehow from the existing one which is with data, can somebody suggest how can I do this - take out the structure of the database from the db with data on it. I have 256 tables and I have to order them first with the dependencies of the tables?!
I will be really thankfull if somebody can help me on this issue.
Thnks,
sqlzagi
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Nov 14, 2007
Is there any way to sort your results in a way that the empty results comes last? When I sort my recordset on a certain column I first get the empty values and the A, B, C etc. I would like to have it A, B, C, ..., Empty ones.
Regards
Ajmufic
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Feb 11, 2008
I am trying to import Data from an Excel file to a SQL DB table. there are around 106 rows and 2 columns.
By default, the ssis is selecting around 200 columns and over 2000 rows. But all cells except for the 2 columns and 106 rows are empty. While I can specify that I need to read only 2 columns, I could not figure out a way to specify the rows. Any help?
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Jul 22, 2007
Hello,
I have a query that returns the appropriate values I need, however there is one field I'd like to add and utilize but my problem is I only want to use it if it contains data.
If I filter it with IS NOT NULL it returns all the records, including the empty records. The field is simply empty, and doesn't come back as NULL. If I filter it with =' ' , it shows all the records with the empty records only.
I need to do the opposite, be able to filter it only if it's not empty.
Any help would be appreciated.
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Feb 20, 2008
tbl_store
id numeric(9)
enddate datetime(8)
tbl_store Data
ID Enddate
1 01/02/2020
2
3 01/02/2010
4
5 01/02/2001
(empty enddate data is showing <null>)
This is my query...but i want to get date empty records too.
select * from tbl_store where Enddate> '02/20/2008'
I want output
1 01/02/2020
2
3 01/02/2010
4
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Nov 22, 2005
good day to everybody
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Aug 23, 2006
Hi,
I have used Red Gates SQL bundle to make an identical db on sql2005 express from sql 2000. When i run my query against the sql2000 i get what I want, but when i run it against the sql2005, i get nothing.
Anyone got any suggestions to why?
web.config:
<!-- <add name="TPLConnectionString" connectionString="Data Source=[SQL2000],1433;Network Library=DBMSSOCN;Initial Catalog=TPL;User ID=??????;Password=????????;"
providerName="System.Data.SqlClient" />
-->
<add name="TPLConnectionString" connectionString="Data Source=[SQL2005]\SQLEXPRESS,1433;Integrated Security=true;Network Library=DBMSSOCN;Initial Catalog=TPL;User ID=?????;Password=???????;"
providerName="System.Data.SqlClient" />
default.aspx.cs
dbConnection.Open();
String ISPQuery = "SELECT STATEMENT";
SqlCommand command = new SqlCommand(ISPQuery, dbConnection);
SqlDataReader reader = command.ExecuteReader();
Please help!!!
Best regards
Terje Kristensen
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May 16, 2007
I am creating three tables in a DataSet using three stored procedures and I need a way to know that either the tables have at least one row or preferably which if any has no rows. How can I do that?
using three SP's, one for each table:SqlCommand cmd = new SqlCommand("CompanyCheck", con);SqlCommand cmd2 = new SqlCommand("ContractorVerify", con);SqlCommand cmd3 = new SqlCommand("StoreLocation", con);
cmd.CommandType = CommandType.StoredProcedure; cmd2.CommandType = CommandType.StoredProcedure; cmd3.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("@CompanyID", CompanyID); cmd2.Parameters.AddWithValue("@CompanyID", CompanyID); cmd3.Parameters.AddWithValue("@CompanyID", CompanyID); SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = cmd; DataSet ds = new DataSet(); try { da.Fill(ds, "CompanyInfo"); da.SelectCommand = cmd2; da.Fill(ds, "ContractorInfo"); da.SelectCommand = cmd3; da.Fill(ds, "StoreInfo"); } catch { throw new ApplicationException("Data error"); } finally { con.Close(); }
Thank you
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May 18, 2007
Hi,I wrote two queries to search in three tables mp_parent, mp_page and mp_parentThe first one is: SELECT mp_page.PID, mp_page.PageID, mp_page.PageContent, mp_page.ParID, mp_page.ChiID, mp_parent.ParentName FROM mp_page INNER JOIN mp_parent ON mp_page.ParID = mp_parent.ParentID The second one is:SELECT mp_page.PID, mp_page.PageID, mp_page.PageContent, mp_page.ParID, mp_page.ChiID, mp_child.ChildName FROM mp_page INNER JOIN mp_child ON mp_page.ChiID = mp_child.ChildID I used this way to display the records in a FormView public HttpContext context = HttpContext.Current; public void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { ViewState["srch"] = context.Items["srch"]; } FormView1.DataSource = GetTable(); FormView1.DataBind(); } private DataTable GetTable() { SqlConnection SqlCon = new SqlConnection("Data Source=AJ-166DCCD87;Initial Catalog=mp;Integrated Security=True;Pooling=False"); String SQL1 = "select mp_page.PID, mp_page.PageID, mp_page.PageContent, mp_page.ParID, mp_page.ChiID, mp_parent.ParentID, mp_parent.ParentName from mp_page INNER JOIN mp_parent ON mp_page.ParID = mp_parent.ParentID where PageContent like '%" + Convert.ToString(ViewState["srch"]) + "%'"; SqlDataAdapter Adptr = new SqlDataAdapter(SQL1, SqlCon); SqlCommandBuilder CB = new SqlCommandBuilder(Adptr); DataTable Dt = new DataTable(); Adptr.Fill(Dt); return Dt; SqlCon.Close(); } the question is how can I check if one record is empty to witch to another query ??Is it possible to know without using QueryString?Thank you
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