Hi,
I have two tables such that in each table I need to make sure that
column x in table A and column y in table B have a unique values
meaning that a user cannot insert a value to column A if its already
exist in column B and vice versa.
How can I enforce it? Please remember that this two different tables.
Thanks,
Ori.
Hi
I am trying to insert values into a table that doesn't exist there yet from another table, my problem is that because it is joined to the other table it keeps on selecting more values that i don't want.
Code Snippet
SET NOCOUNT ON
INSERT INTO _MemberProfileLookupValues (MemberID, OptionID, ValueID)
SELECT M.MemberID, '6', CASE M.MaritalStatusID WHEN 1 THEN '7'
WHEN 2 THEN '8'
WHEN 3 THEN '9'
WHEN 4 THEN '10'
END
FROM Members M
INNER JOIN _MemberProfileLookupValues ML
ON M.MemberID = ML.MemberID
WHERE M.Active = 1
AND OptionID <> 6
When i execute that code it returns all the values, let say OptionID = 3 is smoking already exists in the MemberProfileLookupValues table then it is going to select that persons memberID
I want to insert only members values that aren't already in the _MemberProfileLookupValues from the Members table (I think that it is because of the join statement that is in my code, but i don't know how i am going to select members that aren't in the table, because i have a few other queries that are very similar that are inserting different values, so ultimately
ONLY INSERT THE MemberID the values 6 and the statusID of X if it is not in the table already.
Any ideas / help will be greatly appreciated. Please help.
Kind Regards
Carel Greaves
What would be the best way to insert unique values into a table/unique column ?
I cannot make that table/unique column as indentity. Right now, I use a staging table with indentity column, insert rows then insert rows back to
final table.
Suggestions are much appreciated.
Ivan
Hi, I have been asked to write some code that can check a large table for duplicate values in a non pk column. The table may have up to 1000000 rows. The PK column is an auto increment field. For performance reasons the column in question could not be set to unique values only for inserts, an algorithm is used to create unique no's before the insert but what I am doing is double checking that their have been no duplicates created accidently. If their are duplicates I need to know what rows they occurred on.
Thanks
Hi,
Suppose a table [Inventory]:
Item Color Quantity
-------------------- -------------------- --------------------------
Table Blue 10
Table Red 20
Table Yellow 30
Chair Blue 40
Chair Red 50
I'm wondering if there is a group state like this:
Select Item, ?Function(Color), Sum(Quantity) From Inventory Group by Item
which returns this:
Table Blue,Red,Yellow 60
Chair Blue,Red 90
Does anyone has an idea how this can be achieved?
Regards,
Manolis Perrakis
how to find all possible combinations of values, for example:
My table includes:
Code:
CREATE TABLE temp1 (item varchar(50), ORDER int);
INSERT INTO temp1 (item, order) VALUES ('apple',1);
INSERT INTO temp1 (item, order) VALUES ('pear',2);
INSERT INTO temp1 (item, order) VALUES ('blueberry',3);
I need the output to be like this:
apple
pear
blueberry
apple, pear
apple, blueberry
pear, blueberry
apple, pear, blueberry
I don't need the reverse of each. For example, I need only 'apple, pear'... I don't need 'pear, apple'.
I am working on an ASP.net web application which inserts new record into an underlying table.
It is actually a ConfirmationNumber and should be unique. I have used abs(checksum(newid()))
For this purpose. Is there a better way to accomplice this?
I need a query to return two values. One will be the total units and the other will be total unique units. See exmaple data below. It does not have to be one query. This will be in SP, so I can keep it seperate if I have to.
ID | ID_UNIT
1 | 01
1 | 01
1 | 02
1 | 03
1 | 03
1 | 04
1 | 04
I need two results.
Total Units = 7 - easy to do by using count()
Total unique units = 4 - I cannot use group by as it would return multiple results for each unit, which is not what we want.
I am getting same value all over how to get unique values for each measures.
how to resolve it.
Hi All,
I need a bit of help with a join. I have 2 tables :
TradeSummary
has fields : SymbolID, CurrentPrice, TotalValue
Trades
has fields : SymbolID, TradeID, ExecutionTime, TradeValue
TradeSummary has one entry for each SymbolID, while Trades contains one or more entries per SymbolID
and what I want to retreive is :
For every item in TradeSummary get CurrentPrice, TotalValue from TradeSummary
and also get TradeValue from Trades for the record for max(ExecutionTime)
tables are joined on TradeSummary.SymbolID = Trades.SymbolID
Every attempt of mine so far returns multiple rows for each SymbolID - I want only one row per SymbolID
thanks in advance
I am using Access 2007 and I have 10 columns of data.
I am trying to select all the data from all 10 columns where the first column's data returns only the Unique values and the other columns return all the data from the row that is returned from the first column.
I have used this
SELECT DISTINCT [SFR Rates All].Sorter, [SFR Rates All].SProgram, [SFR Rates All].S_Price, [SFR Rates All].Min_Loan, [SFR Rates All].Max_Loan
FROM [SFR Rates All];
But that returns all the data in the table and all values in the Sorter column with duplicates because each row has distinct data.
I am trying to return unique values from [SFR Rates All].Sorter (the first column) and all the data from the other 9 columns that are contain the row with the unique value in Sorter.
I know that I am missing something basic but well, I can't figure it out.
Thanks
Bob
Hi I am using VS 2005 with SQL 2005.
I had a Datagrid and i Need to bind data into it.
I need to show Random Unique ID's based on the Parameter i pass.
I wrote select top 5 * from Employee order by NEWID()
for this i had created a Stored Procedure as
create Proc Demo(@N int)as beginselect top @N * from Employee order by NEWID()end
Its showing a syntax error near @N. How can i pass the parameter for Select Top @N * from .......
I am in a situation where I need to find out unique field names with different values in a table having 200+ columns.
Let's say I have two rows with 200+ columns ( I exported these rows from Lotus Notes to SQL Server) I am not sure what columns makes unique of these rows. It's going to be tedious by checking each column values.
Is there anyway I can write a squl query on these two rows which outputs column names which are having unique values.
I would appreciate If anybody gives me hint about achieving desired result
I have this query and it works except for I am getting duplicate primary keys with unique column value. I want to combine them so that I have one primary key, but keep all the columns. Example:
Key column 1 column 2 column 3 column 4
A 1 1
A 2 2
B 2 3
B 5 5
it should look like:
A 1 1 2 2
B 2 3 5 5
Here is my query:
SELECT *
FROM [TLC Inventory].dbo.['2014 new$']
WHERE [TLC Inventory].dbo.['2014 new$'].mis_key LIKE '2%'
AND dbo_Product_Info#description NOT LIKE 'NR%'
AND dbo_Line_Info#description NOT LIKE 'OBSOLETE%'
Do I use a sum function?
I have a table which maps two related IDs. That table has 3 columns: ID, BHID & EPID. I need to find all of the BHIDs where the EPID is unique. It seems easy enough, but I keep going in circles..
USE [CGB]
GO
/****** Object: Table [dbo].[ePID_BHID] Script Date: 04/15/2015 15:48:14 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
[code]....
I have a data set as -
ID Set Date DB Date
100 Null 07/01/15
100 07/05/15 07/02/15
100 07/10/15 07/08/15
I want to able to get 2 unique dates
1. 07/02/15 - As I want the DB date for ID - 100 when set date changed from a null value to non null value.
2. 07/08/15 - As I want the DB date for ID - 100 when a non null set date changes.
The table has such records for lot of different ID's.
I'm trying to use merge data from a staging table to a production table. There are a lot of duplicate values for serverName and I only want to insert one instance where there are duplicates.
How I can adapt the code I have so far to achieve this?
MERGE tblServer AS TARGET
USING tblTemp AS SOURCE
ON (TARGET.serverName = SOURCE.serverName)
WHEN MATCHED THEN
UPDATE SET TARGET.serverName = SOURCE.serverName, TARGET.serverLocation = SOURCE.serverLocation
WHEN NOT MATCHED BY TARGET THEN
INSERT (serverName, serverLocation)
VALUES (SOURCE.serverName, SOURCE.serverLocation)
WHEN NOT MATCHED BY SOURCE THEN
DELETE;
After adding a Unique constraint to a database I cannot add more than one record with a null value for the constrained field. I've tried both adding the constraint to an empty table as well as a table with multiple null values already in the subject field; both efforts have failed.
According to BOL SQL-7 allows Unique Constraints on fields with Null values. Am I missing a step? I do need to allow nulls in the field yet ensure that when there is a non-null value it is unique.
The SQL statement I've used is: ALTER TABLE tbl_MasterUIC ADD CONSTRAINT uniquesamplenbr UNIQUE NONCLUSTERED (samplenbr)
Thanks for any and all suggestions
Look at the following code,
Create table #test
(
id int primary key,
Name varchar(100)
)
insert into #test values (1,'John')
insert into #test values (2,'Walker')
[Code] ....
-- Query 1 :
update #test set name = 'Joney' where id = 1
-- Query 2 :
set rowcount 1
update #test set name = 'Joney' where id = 1
set rowcount 0
1. #test table have primary key & clustered index.
2. Obviously only one row will be available for an id.
3. In query 1, will the sql server look for matching rows even after it found 1 row?
4. Will query 2 really gains some performance?
Hi, all,
I have a question about adding a unique key column to an existing table.
what i trying to do is that: I have already created a table, now i wanna add a ID column to this table, and generate the values for ID column from 1 to the existing row number. How can I get this done?
Thanks a lot in advance for any guidance.
Hi all,
I've got a large table (3mil records) with a number of columns, but currently no way to refer to any individual column. I therefore need a primary key, but does anyone know of a SQL statement I can use that will create a column (say, ID) that is automatically filled with an incrementing 'counter'? Or, instead, how can I set unique incremental values after first creating the column?
Many thanks,
Graham
I have the following two tables...
tblServer
-serverID
-serverName
-serverLocation
tblSite
-siteID
-serverID
-siteName
-siteIpAddress
I need to write a select query that gets the values of all columns but only returns unique sites because some sites are load balanced across several servers and where this is the case I don't want the site to appear multiple times in the list.
Below is my sample data. I can't figure out how to select Unique phonenumber contacts for the same Ranked values from the set.
Basically the table is a mix of contactIDs. Some of them have duplicate phone numbers and through a separate mechanism we have ranked them.
It's easier then to pull out max(ranked) CLI_Numbers and their counterpart contactID(s). But I am also getting 2 or more records where the rank happens to be the same. I don't want that. Any one of the contactID will do for me.
The table has also same cliNumbers with different rank values, which are then correctly being picked up in the query below.
Note: ContactId is a unique value for each person in the table.
RecordID is simply RowID.
( I have attempted to populate a sample data suited for this forum - not sure how it comes out on the browser)
if object_id('tempdb..#MyData') is not null
drop table #MyData
create table #MyData
(
RecordID int,
contactID int,
forename varchar(25),
surname varchar(25),
[Code] ....
This is my query attempt
With RankedmobileDuplicateSet
as(
select cliNumber, max(ranked_value) as ranked_max_value
from #temp_UK_mobiledata
group by cliNumber)
[Code] .....
Why we the Unique Constraint doesn't allow the multiple null values in Sql Server?
View 2 Replies View RelatedHi!
I'm not sure how to resolve this problem:
I've got 4 tables:
- Table1 (UniqueCode, Col11, .. , Col1N)
- Table2 (UniqueCode, Col21, .. , Col2M)
- Table3 (UniqueCode, Col31, .. , Col3X)
- Table4 (UniqueCode, Col41, .. , Col4X)
Each TableX has the same column: UniqueCode and its column's value can't be duplicated in the tables.
Ex.
Insert Table1 Values ('Code1', 'Ex1', ... )
Insert Table2 Values ('Code1', 'Ex2', ... ) -> Error!
1) Should I control this programming a Trigger?
2) Would be better to do a new Table?
TableUnique( UniqueCode, IdTable1, IdTable2, IdTable3, IdTable4)
.. for example??
Thanks!!!
Is it possible to create a unique constraint on two tables?In mssql2000?
View 7 Replies View RelatedI feel sure that this is a very naive question, but it is freeky me out that I can solve it. With SQL server what is the easiest way to make a field other than the Primary key unique?Would appreciate help with this. ThanksPaul
View 3 Replies View Relatedhi guys,
i have 3 tables (T1, T2, T3), each with the same structure:
ID1 -> char(10)
ID2 -> char(12) NULL
ID3 -> char(10)
Value1 -> money
Value2 -> money
Value3 -> money
Note1 -> Text
Note2 -> Text
ID1+ID2+ID3 is the clusterd unique key in each table
what i want:
ID1, ID2, ID3 (with distinct occurencies of all 3 tables), T1.Value2, T2.Value2, T2.Value3, T3.Value1, T3.Note1
what i tried is to get all possible rows with
SELECT ID1,ID2,ID3 FROM T1
UNION
SELECT ID1,ID2,ID3 FROM T2
UNION
SELECT ID1,ID2,ID3 FROM T3
but i dont know how to join or add the other columns. maybe with
WITH RowList (ID1,ID2,ID3) AS ( ... code above.... ) SELECT ...
any ideas?
thx
I have a comma separated field containing numerous 2 digit numbers that I would like splitting out by a corresponding unique code held in another field on the same row.
E.g
Unique Code Comma Separated Field
14587934 1,5,17,18,19,40,51,62,70
6998468 10,45,62,18,19
79585264 1,5,18
These needs to be in column format or held in an array to be used as conditional criteria.
Unique Code Comma Separated Value
79585264 1
79585264 5
79585264 18
A common partitioning scenario is when the partition column has the same value for every record in the partition, as opposed to a range of values. Am I the only person who wonders why there isn't an option to automatically partition a table based on the unique values of the partition column? Instead of defining a partition function with constants, you ought to be able to just give it the column and be done. This would be particularly valuable for tables partitioned on a weekly or monthly date; when new data is added it could simply create a new partition if one doesn't already exist.
View 4 Replies View RelatedHello,
I am working with a database that among other things uses multipart keys as the unique indexes which are not consistent from say one table where a parent record resides to another table which contains related child records. For example I am working with two tables right now, one that contains content that I'll call Contents and the other which contains Usage information about the contents (number of view, a rating and comments give by a customer) which I'll call ContentsUsage. The system that manages the data for the tables has a versioning system by which, whn a content item is added (first time) a "unique" id (guid) and a version number of 1 is created along with the rest of data items in the Contents table and likewise in the ContentsUsage table (essentially a one to one mapping) on the like named fields in that table. Now, each time a given record in the Contents table is updated a new version, with the same guid is created in the Contents and ContentsUsage table. So one side I have:ContentGUID > AAAAVersion > 1ContentGUID > AAAAVersion > 2And the other table (ContentsUsage)ContentGUID > AAAAVersion > 1ContentGUID > AAAAVersion > 2
While both of these tables have a quasi-unique record (row_id) of type char and stored as a guid neither obviously are the same in the two tables and having reviewed the database columns for these tables I find that the official unique key's for these tables are different (table 1, Contents combines the ContentGUID and Version) as the composite / mutli-key index, while table ContentsUsage uses the RowGUID as it's unique index.
Contents RowGUID (unique key)ContentGUIDVersionViewsRatingComments................RowGUID ContentGUID (unique key)Version (unique key)Description.....
Bearing this in mind I am unable of course to link directly the two tables by using the just the ContentGUID and have to combine the additional Version to I believe obtain the actual "unique" record in question. The question is in terms of writing queries, what would the most efficient query be? What would be the best way to join the two in a query? And are there any pitfalls with the current design that you can see with the way this database (or specifically these tables are defined)? It's something I inherited, so fire away at will on the critique. Having my druthers I would have designed these tables using a unique key of type int that was autogenerated by the database.
Any advice, thoughts or comments would be helpful.
Thanks,P.
What query gives me the list of child tables accessing a unique key (But Not PK) for a given table?
For. E.g. In the folloiwng scenario I should get o/p as t3
create table t1 (id1 int primary key , id2 int unique )
create table t2 (id1 int references t1(id1))
create table t3 (id2 int references t1(id2))
------------------------
I think, therefore I am - Rene Descartes
I have a procedure which updates a sequence number in a table such as the one below.
Seq Sequence_Id
------ ------------------
NextNum 1
This is the procedure ...
create procedure DBO.MIG_SYS_NEXTVAL(@sequence varchar(10), @sequence_id int)
as
begin
update mig_sys_sequences
set
@sequence_id = sequence_id = sequence_id + 1
where
seq = 'CSN'
return(@sequence_id)
end
The purpose of this is to generate a sequential number each time the procedure is called. This number would then be used in a number of different tables to allocate a unique id so that the id is unique across the different tables.
1). What is the most efficient way of allocating these unique ids? The tables that I plan to update will already be populated with data.
2). How would I call the above procedure from an UPDATE statement?
Many thanks,
Fred