Dynamic Select/Update Statement Possible?

Dec 3, 2004

Would it be possible to retrieve a "dynamically" named field from a table by using an input parameter?

For example, if a table has fields named Semester1, Semester2, Semester3, Semester4, and I was lazy and only wanted to create one stored procedure for all semesters could I do the following...

ALTER PROCEDURE u_sp_x
@semester int
AS
Select Semester@semester
From ThisTable

Just curious.

Thanks,
Steve Hanzelman

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SQL Server 2012 :: Create Dynamic Update Statement Based On Return Values In Select Statement

Jan 9, 2015

Ok I have a query "SELECT ColumnNames FROM tbl1" let's say the values returned are "age,sex,race".

Now I want to be able to create an "update" statement like "UPATE tbl2 SET Col2 = age + sex + race" dynamically and execute this UPDATE statement. So, if the next select statement returns "age, sex, race, gender" then the script should create "UPDATE tbl2 SET Col2 = age + sex + race + gender" and execute it.

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Jul 23, 2005

In general, What is the best approach in creating a dynamic updatestored procedure, that can handle recieving varying input paramters andupdate the approporiate columns.

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Aug 29, 2006

I am currently having this problem with gridview and detailview. When I drag either onto the page and set my select statement to pick from one table and then update that data through the gridview (lets say), the update works perfectly.  My problem is that the table I am pulling data from is mainly foreign keys.  So in order to hide the number values of the foreign keys, I select the string value columns from the tables that contain the primary keys.  I then use INNER JOIN in my SELECT so that I only get the data that pertains to the user I am looking to list and edit.  I run the "test query" and everything I need shows up as I want it.  I then go back to the gridview and change the fields which are foreign keys to templates.  When I edit the templates I bind the field that contains the string value of the given foreign key to the template.  This works great, because now the user will see string representation instead of the ID numbers that coinside with the string value.  So I run my webpage and everything show up as I want it to, all the data is correct and I get no errors.  I then click edit (as I have checked the "enable editing" box) and the gridview changes to edit mode.  I make my changes and then select "update."  When the page refreshes, and the gridview returns, the data is not updated and the original data is shown. I am sorry for so much typing, but I want to be as clear as possible with what I am doing.  The only thing I can see being the issue is that when I setup my SELECT and FROM to contain fields from multiple tables, the UPDATE then does not work.  When I remove all of my JOIN's and go back to foreign keys and one table the update works again.  Below is what I have for my SQL statements:------------------------------------------------------------------------------------------------------------------------------------- SELECT:SELECT People.FirstName, People.LastName, People.FullName, People.PropertyID, People.InviteTypeID, People.RSVP, People.Wheelchair, Property.[House/Day Hab], InviteType.InviteTypeName FROM (InviteType INNER JOIN (Property INNER JOIN People ON Property.PropertyID = People.PropertyID) ON InviteType.InviteTypeID = People.InviteTypeID) WHERE (People.PersonID = ?)UPDATE:UPDATE [People] SET [FirstName] = ?, [LastName] = ?, [FullName] = ?, [PropertyID] = ?, [InviteTypeID] = ?, [RSVP] = ?, [Wheelchair] = ? WHERE [PersonID] = ? ---------------------------------------------------------------------------------------------------------------------------------------The only fields I want to update are in [People].  My WHERE is based on a control that I use to select a person from a drop down list.  If I run the test query for the update while setting up my data source the query will update the record in the database.  It is when I try to make the update from the gridview that the data is not changed.  If anything is not clear please let me know and I will clarify as much as I can.  This is my first project using ASP and working with databases so I am completely learning as I go.  I took some database courses in college but I have never interacted with them with a web based front end.  Any help will be greatly appreciated.Thank you in advance for any time, help, and/or advice you can give.Brian 

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Nov 9, 2006

Hi,
I rewrote my working Sql statement to prevent Sql Injections. I copied some code I used in another project but this time I can't get it to work, possibly because it's an update statement and not an Insert one, which I used before.
Sorry for the boring question, but does anyone have a clue what's wrong with the syntax?
Here's the original code (I changed the parameter names for clarity and security):
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Here's the code from codebehind:
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Here's my test message; first the sql, then the new string to be inserted:
Update MyTable Set (picturename) Values (@pname) WHERE personID = 2       2_adin.jpg  
Here's my error code:
Line 1: Incorrect syntax near '('. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near '('.
Source Error:
Line 489:            TestLabel.Text = strSQL & "  " & pnameLine 490:            cmd.Connection.Open()Line 491:            cmd.ExecuteNonQuery()Line 492:            cmd.Connection.Close()Line 493:        End If 
I could understand it if I'd get an error in VWD Express for using dynamic variables, but they work correctly in the text message so I'm clueless. Any help is deeply appreciated!
Pettrer (VB, Sql Server 2000)
 
 

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Aug 14, 2014

I'm trying to generate an update statement based off select statement results. A very basic example,

SELECT ListID FROM DListing WHERE Status = 2Results return 3 rows.
1234
2345
3456

How can I take those results and turn them into WHERE criteria for UPDATE statement?

Generated UPDATE statement should look like this.

UPDATE DListing SET Status = 1 WHERE ListID IN (1234,2345,3456)

I have started by creating a temp table to hold my SELECT results, but I don't know how to get those results into format for IN condition. Right now I get 3 UPDATE statements with 1 ListID in each IN condition.

CREATE TABLE #TempStatusUpdate(ListID INT)
INSERT INTO #TempStatusUpdate
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May 5, 2015

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  ELSE
   UPDATE TABLE2
   SET TABLE2.FIELD1 = 2
END
FROM OuterTable x

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Oct 13, 2001

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Jul 27, 2004

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Example:

I need to count the number of weeks between two dates, my columns in the table need to be at least one for every week returned in my query.

I'm thinking of getting a count of the number of weeks then building my column string comma separated then do my CREATE TABLE statement rather then the SELECT INTO... But I'm not sure I'll be able to do that using a variable that holds the string of column names. I'm guess the only way I can do this is via either VBScript or VB rather then from within the database.

BTW - this would be a stored procedure...

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In Dot net 2.0 we change using SQLDataSource to Conect with SQLDB.
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Jul 30, 2007

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USE [PO]
GO
/****** Object: StoredProcedure [dbo].[npSSUserLoad] Script Date: 4/18/2015 3:57:38 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON

[Code] ...

-- Generated code - DO NOT MODIFY

-- From Object Schema: 'C:XXXXXX.NetPOPOModel\_ObjectSchema

-- To regenerate this procedure use the 'Open With' option on file _ObjectSchema and select POCodeGen.exe

Declare @SqlCmd nvarchar(max)
Declare @ParamDefinitions nvarchar(1024)
Set @ParamDefinitions = N'@UserId int,NTUser varchar(30), @XmlResult XML OUTPUT'
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(
Select
[UserId] [a],
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I search on google and i find openrowset but this generate a meta data error

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May 7, 2007

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                            ATVDDR1       1.1.1.1     2ndFloor
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Jul 20, 2005

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Apr 15, 2008

Hello!

I am trying to write an update t-SQL statement from the following select statement:

SELECT EduNextContacts.ssn
FROM EduNextContacts Left JOIN
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I tried many versions of writing my update statement with no luck. My most recent version is as follows:


UPDATE EduNextContacts

SET EduNextContacts.overLMLimit = 'Y'

FROM EduNextContacts Left JOIN

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EduNextContacts.campaign_code = EduContactsAuditChanges.campaign_code

WHERE EduNextContacts.ssn = (SELECT DISTINCT EduContactsAuditChanges.ssn

FROM EduNextContacts Left JOIN

EduContactsAuditChanges ON EduNextContacts.ssn = EduContactsAuditChanges.ssn AND

EduNextContacts.campaign_code = EduContactsAuditChanges.campaign_code

GROUP BY EduContactsAuditChanges.ssn

HAVING(SUM(CASE EduContactsAuditChanges.release_code WHEN '103' THEN 1 ELSE 0 END) +

SUM(CASE EduContactsAuditChanges.release_code WHEN '102' THEN 1 ELSE 0 END) >= 2))


And gives the following error:

Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.


Can anyone help shed some light on how to make an update statement from my SELECT query above?

Thanks in advance,
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Oct 22, 2014

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Results

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22 Animal
15 Birds
-1 --Please Select--
40 Reptiles
36 Snakes

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Jun 12, 2014

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here is my code:


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Hello All
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thanks all I hope it make sence, if not I wrill write another post to bring step by step info into it.
 

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I've looked up Books Online on Dynamic Cursor/ Dynamic SQL Statement.

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Does anyone know how to use Dynamic Cursor/ Dynamic SQL Statement?

James



-- SQL ---------------

EXEC SQL BEGIN DECLARE SECTION;
char szCommand[] = "SELECT au_fname FROM authors WHERE au_lname = ?";
char szLastName[] = "White";
char szFirstName[30];
EXEC SQL END DECLARE SECTION;

EXEC SQL
DECLARE author_cursor CURSOR FOR select_statement;

EXEC SQL
PREPARE select_statement FROM :szCommand;

EXEC SQL OPEN author_cursor USING :szLastName;
EXEC SQL FETCH author_cursor INTO :szFirstName;



--Error--------------------
Server: Msg 170, Level 15, State 1, Line 23
Line 23: Incorrect syntax near ';'.
Server: Msg 1038, Level 15, State 1, Line 24
Cannot use empty object or column names. Use a single space if necessary.
Server: Msg 1038, Level 15, State 1, Line 25
Cannot use empty object or column names. Use a single space if necessary.
Server: Msg 170, Level 15, State 1, Line 27
Line 27: Incorrect syntax near ';'.
Server: Msg 170, Level 15, State 1, Line 30
Line 30: Incorrect syntax near 'select_statement'.
Server: Msg 170, Level 15, State 1, Line 33
Line 33: Incorrect syntax near 'select_statement'.
Server: Msg 102, Level 15, State 1, Line 35
Incorrect syntax near 'author_cursor'.
Server: Msg 170, Level 15, State 1, Line 36
Line 36: Incorrect syntax near ':'.

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i was thinking of doing

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UPDATE SQL Statement In Excel VBA Editor To Update Access Database - ADO - SQL

Jul 23, 2005

Hello,I am trying to update records in my database from excel data using vbaeditor within excel.In order to launch a query, I use SQL langage in ADO as follwing:------------------------------------------------------------Dim adoConn As ADODB.ConnectionDim adoRs As ADODB.RecordsetDim sConn As StringDim sSql As StringDim sOutput As StringsConn = "DSN=MS Access Database;" & _"DBQ=MyDatabasePath;" & _"DefaultDir=MyPathDirectory;" & _"DriverId=25;FIL=MS Access;MaxBufferSize=2048;PageTimeout=5;" &_"PWD=xxxxxx;UID=admin;"ID, A, B C.. are my table fieldssSql = "SELECT ID, `A`, B, `C being a date`, D, E, `F`, `H`, I, J,`K`, L" & _" FROM MyTblName" & _" WHERE (`A`='MyA')" & _" AND (`C`>{ts '" & Format(Date, "yyyy-mm-dd hh:mm:ss") & "'})"& _" ORDER BY `C` DESC"Set adoConn = New ADODB.ConnectionadoConn.Open sConnSet adoRs = New ADODB.RecordsetadoRs.Open Source:=sSql, _ActiveConnection:=adoConnadoRs.MoveFirstSheets("Sheet1").Range("a2").CopyFromRecordset adoRsSet adoRs = NothingSet adoConn = Nothing---------------------------------------------------------------Does Anyone know How I can use the UPDATE, DELETE INSERT SQL statementsin this environement? Copying SQL statements from access does not workas I would have to reference Access Object in my project which I do notwant if I can avoid. Ideally I would like to use only ADO system andSQL approach.Thank you very muchNono

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JDBC 2005 Update Statement - Failing Multi Row Update.

Nov 9, 2007

It appears to update only the first qualifying row. The trace shows a row count of one when there are multiple qualifying rows in the table. This problem does not exist in JDBC 2000.

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Using Conditional Statement In Stored Prcodure To Build Select Statement

Jul 20, 2005

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TSQL - Use ORDER BY Statement Without Insertin The Field Name Into The SELECT Statement

Oct 29, 2007

Hi guys,
I have the query below (running okay):



Code Block
SELECT DISTINCT Field01 AS 'Field01', Field02 AS 'Field02'
FROM myTables
WHERE Conditions are true
ORDER BY Field01

The results are just as I need:


Field01 Field02

------------- ----------------------

192473 8461760

192474 22810



Because other reasons. I need to modify that query to:



Code Block
SELECT DISTINCT Field01 AS 'Field01', Field02 AS 'Field02'
INTO AuxiliaryTable
FROM myTables
WHERE Conditions are true
ORDER BY Field01
SELECT DISTINCT [Field02] FROM AuxTable
The the results are:

Field02

----------------------

22810
8461760

And what I need is (without showing any other field):

Field02

----------------------

8461760
22810


Is there any good suggestion?
Thanks in advance for any help,
Aldo.

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