Update Statement Logic

May 9, 2008

Hi guys

We have a table X with a gender column taking values M(male) or F(Female).There are 52 rows in the table X.We want to update all the rows with Gender M as F and update all remaining F as males (M) in a single Update Query.Im looking for the exact logic we would write in the single update statement.
Please help me out.

Thanks in advance

Regards
ARvind L

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Please Help With Complex Update Statement Logic

Nov 8, 2006

hi.I am having probelms with an update statement. every timei run it, "every" row updates, not just the one(s) intended.so, here is what i have. i have tried this with both AND and ORand neither seem to work.i dont know why this is elluding me, but i'd appreciate help with thesolution.thanks.UPDATE addSET add_s = 1WHERE add.add_status = 0 and add.add_email = 'mags23@rice.edu'or add_s in(SELECT a.add_sFROM add a, edit eWHERE a.email_address = e.email_addressand e.public_name = 'professor')

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SQL Server 2012 :: Replacing CASE Statement In Update With Table-driven Logic

Oct 20, 2014

I have a stored proc that contains an update which utilizes a case statement to populate values in a particular column in a table, based on values found in other columns within the same table. The existing update looks like this (object names and values have been changed to protect the innocent):

UPDATE dbo.target_table
set target_column =
case
when source_column_1= 'ABC'then 'XYZ'
when source_column_2= '123'then 'PDQ'

[Code] ....

The powers that be would like to replace this case statement with some sort of table-driven structure, so that the mapping rules defined above can be maintained in the database by the business owner, rather than having it embedded in code and thus requiring developer intervention to perform changes/additions to the rules.

The rules defined in the case statement are in a pre-defined sequence which reflects the order of precedence in which the rules are to be applied (in other words, if a matching value in source_column_1 is found, this trumps a conflicting matching value in source_column_2, etc). A case statement handles this nicely, of course, because the case statement will stop when it finds the first "hit" amongst the WHEN clauses, testing each in the order in which they are coded in the proc logic.

What I'm struggling with is how to replicate this using a lookup table of some sort and joins from the target table to the lookup to replace the above case statement. I'm thinking that I would need a lookup table that has column name/value pairings, with a sequence number on each row that designates the row's placement in the precedence hierarchy. I'd then join to the lookup table somehow based on column names and values and return the match with the lowest sequence number, or something to that effect.

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May 29, 2007

I'd like to make a logic statement, that would take as arguments result of the sql select query. In more details: I would like to create a local Bool variable that would be false if some value is NULL in the table (or select query).Query example:select taskID from Users where Login=@usernameWhich classes/methods should i use to solve this problem? I use SqlDataSource to get access to database and i think i should use something like SqlDataSource.UpdateCommand and SqlDataSource.UpdateParameters but dont know how to build from this a logic statement.Thanks in advance 

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Update Trigger Logic

Nov 8, 2004

Posts: 20
Joined: Aug 2003
Mon November 08, 2004 9:42 AM



I have a table where from 1 to 3 fields will be update (lastname,firstname,birthdate). Any combination of the 3 can be updated. I need a trigger to handle the updates which update some other db tables. I can handle the update trigger part, the ? is how to best approach the logic. I can do thee separate statements to handle an update for each of the columns, but that could cause 3 separate updates to fire. I was looking at doing something like

If UPDATE(last_name)
and UPDATE(first_name)
and update(date_of_birth)
BEGIN
...
end
else if
If UPDATE(last_name)
and UPDATE(first_name)
begin
...
end

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Logic On UPDATE Query

Jan 25, 2006

I am dealing with two tables and I am trying to take one column from a table and match the records with another table and append the data of that column.

I used an update query that looks like this:

UPDATE Acct_table Set Acct_table.Score =
(Select Score_tbl.Score from Score_tbl
Where Acct_table.Acctnb = Score_tbl.Acctnb

This process has been running for over an hour and a half and is building a large log file. I am curious to know if there is a better command that I can use in order to join the tables and then just drop the column from one to the other. Both tables are indexed on Acctnb.

Any insight would truly help.
Thanks!

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Update Logic In Warehouse ...

Feb 5, 2008

Hi,

I am facing a small problem while updating the warehouse using SSIS package.

Here is an sample scenario.
I have a staging table T1 with some important columns as stateid,ename etc ..
and target table as Trg with only two columns stateid and statecnt.
The Rule is, each state will be sending an excel file which basically contains state and employees belonging to the state information.
For the first time when i execute the SSIS package, i need to load statetid and count_of_employees for that particular state.
say for example.

SELECT stateid,
count(ename)
from T1
where stateid = ?

For the next time if the same state information is received then we need to update the count to the existing record in the Dataware house rather than creating a brand new record once again.

I am little bit confused of implementig this logic.
Can anyone help me out in accomplishing this task.
What can done or what steps is involved in achiving the task.

Thanks in advance.

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Case Statement - How To Overwrite Logic In Column

Feb 13, 2014

Aim – when Fee_Code = ‘42B’ and month_end_date =>2013-02-01 change the Fee_Code from “42B” to “42C”. Anything prior to 2013-02-01 the fee_code needs to remain the same

I can do this as a case statement(as seen below) but this creates a new column. How can i overwrite this logic in the fee_code column ?My query is

SELECT
FDMSAccountNo,
Fee_Code,
month_end_date,
sum(Fact_Fee_History.Retail_amount) as 'PCI',
Case
when
fee_code = '42B' and (month_end_date >='2013-02-01') then '42C' end as Test
from Fact_Fee_History

[code]....

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Implement Logic For Update Or Insert

May 1, 2006

I have a stored procedure that I need to either perform an update if a record exists or an insert if the record doesn't exist.

Here is my procedure:

CREATE PROCEDURE dbo.Insert_Temp_ContactInfo

@sessionid varchar(50),
@FirstName varchar(50),
@LastName varchar(50),
@SchoolName varchar(50),
@address varchar(50),
@City varchar(50),
@State int,
@Zip varchar(5),
@Phone varchar(10),
@Email varchar(50),
@CurrentCustomer varchar(3),
@ImplementationType int,
@ProductType int = null,
@Comment varchar(500)

AS

--check if a current record exists

SET NOCOUNT ON

SELECT FirstName, LastName, SchoolName, Address, City, State, Zip, Phone, Email, CurrentCustomer, ImplementationType, ProductType, Comment
FROM dbo.Temp_ContactInfo
WHERE sessionid = @sessionid


SET NOCOUNT OFF


--if exists update the record

UPDATE dbo.Temp_ContactInfo
SET
FirstName = @FirstName,
LastName = @LastName,
SchoolName = @SchoolName,
Address = @address,
City = @City,
State = @State,
Zip = @Zip,
Phone = @Phone,
Email = @Email,
CurrentCustomer = @CurrentCustomer,
ImplementationType = @ImplementationType,
ProductType = @ProductType,
Comment = @Comment
WHERE sessionid = @sessionid

--if the record does not exist, then insert a new record

INSERT INTO dbo.Temp_ContactInfo (sessionid, FirstName, LastName, SchoolName, address, City, State, Zip, Phone, Email, CurrentCustomer, ImplementationType, ProductType, Comment)
VALUES (@sessionid, @FirstName, @LastName, @SchoolName, @address, @City, @State, @Zip, @Phone, @Email, @CurrentCustomer, @ImplementationType, @ProductType, @Comment)

GO

I think I can use an if statement. Can anyone help me out with this?

Thanks.

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Apr 20, 2015

In order to feed a fact table of a dwh from a staging table I'm using the MERGE statement in order to control insert and update operations. It is possible that the staging table has duplicate rows respect to the fields controlled in the merge condition:

When I run the first time the MERGE statement unwanted rows could be inserted in the fact table.

Does the MERGE statement allow to manage this case or do I need to filter data from the staging table before to write them into the fact table?

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Please Need Rescue- Complex Update Logic Swap

May 14, 2008

please need rescue- complex update logic
this is my table







1

2

3

4

5

EMPID
fld1
fld11
fld111
fld2
fld22
fld222
fld3
fld33
fld4
fld44

fld444
fld5
fld55
fld555


















1111

A

B

C

7

8

9

G

H

I

J

K

L

M

N


















2222

N

M

L

K

J

I

H

G

F

E

D

C

B

A


















3333

1

2

3

A

B

C

C

E

Y

I

O

W

Y

P




















i need to update for example the eployee 1111 with employee 3333
but with swap ( take the value of employee 1111 in field- fld2,fld22,fld222 and swap value between employee 3333
in field- fld2,fld22,fld222 )



Code Snippet
---update eployee 1111 with employee 3333
-so
if i put the value 2
than ------------------ swap value between 2 employee
set empid1= 1111
set empid2=3333
value_swap=2
if value_swap=2
than
update fld2,fld22,fld222
with fld2,fld22,fld222
------------------- take the value of employee 1111 in field- fld2,fld22,fld222 and swap value between employee 3333
--------------------in field- fld2,fld22,fld222








value_swap

=1

=2

=3

=4

=5

EMPID
fld1
fld11
fld111
fld2
fld22
fld222
fld3
fld33
fld4
fld44

fld444
fld5
fld55
fld555


















1111

A

B

C

A

B

C

G

H

I

J

K

L

M

N


















2222

N

M

L

K

J

I

H

G

F

E

D

C

B

A


















3333

1

2

3

7

8

9

C

E

Y

I

O

W

Y

P



















Code Snippet
---update eployee 2222 with employee 1111
-so
if i put the value 5
than ------------------ swap value between 2 employees
set empid1= 1111
set empid2=2222
value_swap=5
if value_swap=5
than
update fld5,fld55,fld555
with fld5,fld55,fld555
------------------- take the value of employee 1111 in field- fld5,fld55,fld555 and swap value between employee 3333
--------------------in field- fld5,fld55,fld555













=1

=2

=3

=4

=5

EMPID
fld1
fld11
fld111
fld2
fld22
fld222
fld3
fld33
fld4
fld44

fld444
fld5
fld55
fld555


















1111

A

B

C

7

8

9

G

H

I

J

K

W

Y

P


















2222

N

M

L

K

J

I

H

G

F

E

D

C

B

A


















3333

1

2

3

A

B

C

C

E

Y

I

O

L

M

N















TNX FOR ALL THE HELP I GET IN THIS Forum

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Aug 9, 2015

I have a data model with 7 tables and I'm trying to write a stored procedure for each table that allows four actions. Each stored procedure should have 4 parameters to allow a user to insert, select, update and delete a record from the table.

I want to have a stored procedure that can accept those 4 parameters so I only need to have one stored procedure per table instead of having 28 stored procedures for those 4 actions for 7 tables. I haven't found a good example online yet of conditional logic used in a stored procedure.

Is there a way to add a conditional logic IF statement to a stored procedure so if the parameter was INSERT, go run this statement, if it was UPDATE, go run this statement, etc?

I have attached my data model for reference.

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Nov 17, 2006

I have got a business logic update conflict handler working, but I have had to work round what appears to be a bug.

Please can someone confirm if this is indeed a bug and if it is a known bug?

My conflict handler needs to take some columns from the publisher row and some from the subscriber row in the event of conflict.

I can quite happily generate a custom dataset which contains the winning row that I want I can see that because I can step through the conflict handler with debug when a conflict occurs.

However, just returning ActionOnUpdateConflict.AcceptCustomConflictData from the UpdateConflictsHandler method does not set the publisher and subscriber columns correctly. I end up with different values on the two databases.

I have found that the only way to get the correct rows on both publisher and subscriber is to create a new ADO connection to the publisher and actually perform an update updating all the modified columns. This now works reliably in my testing.

Fortunately, due to business rules the frequency of update conflicts are likely to be very infrequent, but I would very much like to avoid having to do the unnecessary update.

Notes:

I am using column level tracking but I have seen the problem with row level tracking too
I have mainly been using SP1 but have repeated the test on a configuration using the SP2 CTP and the problem occurs there too
The problem is not due to complex logic in my code. If the method just sets customDataSet = publisherDataSet.Copy and then returns ActionOnUpdateConflict.AcceptCustomConflictData, the changed and winning publisher values are not sent to the subscriber

Any thoughts would be much appreciated

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Apr 21, 2015

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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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Jan 9, 2015

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Aug 13, 2014

i was tasked to created an UPDATE statement for 6 tables , i would like to update 4 columns within the 6 tables , they all contains the same column names. the table gets its information from the source table, however the data that is transferd to the 6 tables are sometimes incorrect , i need to write a UPDATE statement that will automatically correct the data. the Update statement should also contact a where clause

the columns are [No] , [Salesperson Code], [Country Code] and [Country Name]

i was thinking of doing

Update [tablename]
SET [No] =
CASE
WHEN [No] ='AF01' THEN 'Country Code' = 'ZA7' AND 'Country Name' = 'South Africa'
ELSE 'Null'
END

What is the best way to script this

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May 5, 2015

I am attempting to run update statements within a SELECT CASE statement.

Select case x.field
WHEN 'XXX' THEN
  UPDATE TABLE1
   SET TABLE1.FIELD2 = 1
  ELSE
   UPDATE TABLE2
   SET TABLE2.FIELD1 = 2
END
FROM OuterTable x

I get incorrect syntax near the keyword 'update'.

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Jul 23, 2005

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Hello,

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UPDATE [dbo].[CC_Info_T]
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WHERE [Acct_Num_CH] IS NOT NULL
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BEGIN
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Jun 14, 2007

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Aug 22, 2007

Dim lblock As Boolean           chkChecked = lblock        strSQL = "UPDATE CLIENTS SET "            If blnCompleted = True Then            strSQL = strSQL & "COMPLETED_DT = '" & Format(Now(), "MM/dd/yyyy") & "', "            Else            strSQL = strSQL & "LAST_SAVED_DT = '" & Format(Now(), "MM/dd/yyyy") & "', "            End If            strSQL = strSQL & "COMMENTS = '" & FixString(txtcomments.Text) & "' " _            & "WHERE client_ID = " & iclientID & ""I want to put my booleen value lblock to sql too, I probably need value of it, It is checkbox, called  chkblock, . how would I include this to update statement  database field for that  BLOCK =

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Sep 7, 2007

Hi, i nid help on update statement. I using 03 and a microsoft sql server 2000 database.
I use a more simple example of my error. A Northwind Database is use to update the Region table(RegionDescription)
User will 1st go in WebForm2.aspx and enter a id, if found will retrieve the data to WebForm1.aspx. User type "1" and retrieve Eastern to  TextBox1.
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WebForm2.aspx.vb Imports System.Data.SqlClient Public Class WebForm2
Inherits System.Web.UI.PageWeb Form Designer Generated Code Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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Response.Redirect("WebForm1.aspx")End Sub
End Class
 
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Inherits System.Web.UI.Page
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Label1.Text = Session("id")
retrieveTitle()End SubSub retrieveTitle()
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cmd.Connection = cnnDim dr As SqlDataReader
dr = cmd.ExecuteReader()
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cmd.ExecuteNonQuery()
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I have a SQL Table with the following columns
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May 17, 2004

Hey all,

I need to set a column value where the id is within a string. However, I need to set the column to a default value if the id is not within the string. Hope that was easy to understand!

ie:

This currently works...

SET @strSQL = 'UPDATE tblTest SET Archive = 1 WHERE RecID IN (' + @IDList + ')

If the ID is not in the list then I want that column set to 0. How can I do this?

Thanks in advance,

Pete

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Sep 2, 2004

Hi
I use a update sub, the problem is that i got an error, the error is:
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I guess the UPDATE statement is:
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Remark:I use Acceess DataBase, exactly the same code works fine in SQL, i just changed the DataBase(From Access to SQL).

Is the problem can be in other place?
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Update Statement ?

Oct 14, 2004

Hi, I'm having trouble writing this update statement and was wondering if anyone could help me out :

My database is sort of set up lilke this:
There are 3 tables: Orders, OrderDetails and Inventory

Orders has a pk called OrderID.
OD has several ProductIDs listed for that OrderID
Inventory has 2 fields, the pk InventoryID(which is the same as
ProductID) and QOH

So OD kinda looks like this:
OrderID ProductID Quantity Cost
192 12 2 $10
192 3 1 $12
192 14 2 $50
193 12 1 $11
.... .
...
...

so what i want to do is take each productID for a specific orderid
and decrement the inventory for it by OD.quantity


This is what I was trying

UPDATE Inventory
Set QOH = QOH - @qty
WHERE Inventory.InventoryID IN (
SELECT ProductID
FROM OrderDetails
WHERE OrderDetails.OrderID = @OrderID
and @qty = OrderDetails.Quantity
)


but, i'm having no luck...... any suggestions ?

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SQL Update Statement

Dec 15, 2004

what would the syntax be for the following update statement?

"UPDATE [Stocklist]

SET
[client] to textbox2.text
[notes] to textbox3.text
[paid] to textbox4.text
[status] to "old"

WHERE
[Make] = dropdownlist1.SelectedValue
[Model] = dropdownlist2.SelectedValue
[IMEI] = dropdownlist3.SelectedValue
[status] = new"

I know this is a simple question even for someone who is just starting out , thats why I posted it into the "Getting Started" forum.

Thanx in Advance

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Help With Update Statement

Feb 15, 2001

Hi,

I am a SQL Novice - I have a table called 'users' in which I need to modify the user's email id e.g., from seanu@hotmail.com to seanu@yahoo.com and I have over 150 rows where I should be changing 'domain' name only..

Any help with an Update Statement is highly appreciated..

Thanks,
-Srini.

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Help With Update Statement - Again

Oct 27, 2000

I have a table that looks like this.

tkinit adir adate1


0007 0.00 01/01/1996
0007 0.00 01/01/1997
0007 25.00 01/01/1998
0007 27.00 06/01/1998
0008 0.00 01/01/1996
0008 0.00 01/01/1997
0008 32.00 01/01/1998
0008 37.00 06/01/1998

I need to populate the adir field where the adate < 12/31/1998 with the rate where adate = 01/01/1998.

I cant seem to figure out exactly how the statement should go so that I populate each timekeepers rate with their specific rate.

Thanks
Jason Fitch

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