Create Constraint To Add Only Alphabet In Column
Aug 21, 2006I need to create constraint in column to add only alphabet .
like "adc" ,"sdfsd" and not "1234adfd".plz reply soon.
ADVERTISEMENT
Create A Sql Loop Using Alphabet Characters
Jun 28, 2007I have a basic while loop but I need to be able to increment the counter from one alpha character to the next:
declare @counter nvarchar(10)
set @counter = 'A'
while @counter < 'Z'
beginprint 'the counter is ' + @counter
set @counter = @counter + @counter
end
In this example I would need to see the following output:
the counter is Athe counter is Bthe counter is Cthe counter is D.....
Is this possible in SQL?
Unable To Create Unique Constraint On A NULL Column
Apr 5, 2004Hi all,
I am trying to add a unique index/constraint on a column that allows NULL values. The column does have NULL values and when I try to create a unique constraint, I get the following error.
CREATE UNIQUE INDEX terminated because a duplicate key was found for index ID 9. Most significant primary key is '<NULL>'.
Are'nt you allowed to create a UNIQUE constraint on a NULL column? Books Online says that you are allowed to create a unique constraint on NULL columns, then why am I getting this error.
Any help would be appreciated.
Thanks,
Amir
SQL 2012 :: Create A Check Constraint Where Another Table Column Value Is Also Involved
Mar 12, 2015Table ATable B
AIDBID
Col 1BCol1
Col 2
Col3
I want to put a check constraint on A.col3 that depends on the values of A.Col1, A.Col2 and B.BCol1
How can I achieve this without using function.
Transact SQL :: Adding Alphabet Letters To Column Values
Oct 14, 2015I am trying to do the following;
declare @table table
(
ID int,
InvoiceNumber varchar(10)
)
insert into @table
values (1, 20),
(2, 20),
(2, 20),
(3, 60),
(3, 60)
I am trying to add sequential alphabet letters to the InvoiceNumber value on each row. Example;
1 20a
2 20b
3 20c
4 60a
5 60b
and so on.
T-SQL (SS2K8) :: Cannot Define Primary Key Constraint On Nullable Column But Column Not Null
Sep 30, 2014We have a database where many tables have a field that has to be lengthened. In some cases this is a primary key or part of a primary key. The table in question is:-
/****** Object: Table [dbo].[DTb_HWSQueueMonthEnd] Script Date: 09/25/2014 14:05:09 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[DTb_HWSQueueMonthEnd](
[Code] ....
The script I am using is
DECLARE@Column varchar(100)--The name of the column to change
DECLARE@size varchar(5)--The new size of the column
DECLARE @TSQL varchar(255)--Contains the code to be executed
DECLARE @Object varchar(50)--Holds the name of the table
DECLARE @dropc varchar(255)-- Drop constraint script
[Code] ....
When I the the script I get the error message Could not create constraint. See previous errors.
Looking at the strings I build
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] DROP CONSTRAINT PK_DTb_HWSQueueMonthEnd
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] Alter Column [Patient System Number] varchar(10)
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] ADD CONSTRAINT PK_DTb_HWSQueueMonthEnd PRIMARY KEY NONCLUSTERED ([Patient System Number] ASC,[Episode Number] ASC,[CensusDate] ASC)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
They all seem fine except the last one which returns the error
Msg 8111, Level 16, State 1, Line 1
Cannot define PRIMARY KEY constraint on nullable column in table 'DTb_HWSQueueMonthEnd'.
Msg 1750, Level 16, State 0, Line 1
Could not create constraint. See previous errors.
None of the fields I try to create the key on are nullable.
How To Create A Constraint Like This:
Nov 8, 2006Hi,
Suppose the following table definition in Sql Server 2005,
create table CompanySymbol
CompanyId int,
SymbolId int,
IsPrimarySymbol bit
Primary Key (CompanyId, SymbolId)
How can I create a constraint which wil ensure that IsPrimarySymbol will be set to 1(true) only once per CompanyId while allowing it to be set to 0 an unlimited amount of time per CompanyId. i.e.:
CompanyId SymbolId IsPrimarySymbol
-----------------------------------------------------------
1 1 1 (IsPrimarySymbol to 1 for CompanyId 1)
1 2 0
1 3 0
2 1 1 (IsPrimarySymbol to 1 for CompanyId 2)
2 2 0
3 1 0
4 1 1 (IsPrimarySymbol to 1 for CompanyId 4)
4 2 0
4 3 0
Thanks
Can't Create Unique Constraint
Nov 3, 2000I am attempting to create a unique constraint on an nvarchar field named theology (it is not the primary key field)
that allows nulls. The table contains multiple rows with the value of null for
field theology. The documentation says one can create a unique constraint on a
field with all unique value except for null. Here is the error message:
'testtable1' table
- Unable to create index 'IX_testtable1'.
ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]CREATE UNIQUE INDEX
terminated because a duplicate key was found. Most significant primary key
is ''.
[Microsoft][ODBC SQL Server Driver][SQL Server]Could not create constraint. See
previous errors.
Any ideas? I am creating a unique constraint and not a unique index. Is there
some other database option to set to allow this?
.
Create CHECK Constraint
Mar 23, 2014I need to create a check constraint for an email column/field, where the field must contain an "@" symbol. Does sql (oracle or SQL in general) let you do this.
1. Tried myself:
ALTER TABLE Q_Customer
ADD CONSTRAINT Q_chk_Cus_email CHECK (Cus_email LIKE '%@%');
...but
ORA-02293: cannot validate (C3267304.Q_CHK_CUS_EMAIL) - check constraint violated
2. Tried from a forum: alter table Q_CUSTOMER
add constraint Q_Chk_cus_email check (Cus_email like '%_@__%.__%')
...but
ORA-02293: cannot validate (C3267304.Q_CHK_CUS_EMAIL) - check constraint violated
Create Constraint Error
May 16, 2007Hi.I have a procedure with this in it (there are no other references toasset_number_bak_tmp_pk in the procedure and it calls nothing else written byme, just system calls or normal dml).create table #asset_bak(asset_number varchar(60) not null,asset_desc varchar(100) null,location varchar(40) null,constraint asset_number_bak_tmp_pk primary key clustered (asset_number))When I run the procedure, I get this message:(1 row(s) affected)Msg 2714, Level 16, State 4, Procedure updatenavharrierdb, Line 19There is already an object named 'asset_number_bak_tmp_pk' in the database.Msg 1750, Level 16, State 0, Procedure updatenavharrierdb, Line 19Could not create constraint. See previous errors.How can I find where else the system thinks this constraint exists?I tried this but it only finds it in one place (one row in the result set),i.e. my procedure:select sysobjects.name, syscomments.textfrom sysobjects, syscommentswhere sysobjects.id = syscomments.id and((lower(sysobjects.name) like '%asset_number_bak_tmp_pk%') or(lower(syscomments.text) like '%asset_number_bak_tmp_pk%'))Is this somehow a case where I need to do something dynamically, or purge someinformation? I thought temp tables and their crony constraints disappearedafter the procedure exited.thanksJeff Kish
View 2 Replies View RelatedCreate A Foreign Key To Unique Constraint?
Jul 3, 2015why it is not possible to create a Foreign key to a Unique constraint?
Table A has column 1 holding a Primay key and two columns (2 and 3) holding a Unique combination (and some more columns).He created an Unique constraint on column 2 and 3 together.
He wanted to use this Unique combination to point to table B (instead of the table 1's PK) so he tried to create a foreign key on a column in table B but an error popped up prompting;
The columns in table 'TABLE_A' do not match an existing primary key or UNIQUE constraint.
Ok - these two columns ar no PK but the hold an Unique constraint......
SQL 2012 :: How To Create Check Constraint On A View
Mar 12, 2015I want to create a check constraint on a table but the constraint values depend upon another table column as well, now one possible way is to create a function to check the column value. But I don’t want to use the function.
Can I do this in a view if so then how can I achieve this.
Replication :: Not Create New Constraint Range For Subscriber
Jul 14, 2015I have a merge replication in place. I increased the identity_range to 100000 for a table. I have done this both ways, via the properties of the publication on SSMS, and via TSQL. I have call sp_adjustpublisheridentityrange. Then I recreated the sanpshot. EXEC sp_adjustpublisheridentityrange @table_name = N'Label', @table_owner = N'caseup';but after synchronization, the range defined in the table's constraint has not changed and now all of the identity values are used up. All inserts are failing.What needs to be done to force the publisher to recreate the identity range on a subscriber(s).
View 3 Replies View RelatedHow To Create A Unique Constraint On Composite Columns
May 5, 2008I am trying to create a Unique Constraint on a SQL Server 2005 table where the uniqueness is based on 2 columns.
Could anybody provided some help on how I could enforce this on an existing table (link, or example) I have been looking around without luck.
Thanks in advance
John.
How To Create A Constraint On A Header And Detail Tables?
Feb 5, 2008
Hello,
I have a header and detail table. I want to create a constraint on the detail table, based on a value it's linked to in the header table. If the bit is checked in header then a unique value is required , if it's not checked then a NULL value is acceptable.
Many thanks in advance.
More Than One Column FOREIGN KEY Constraint Specified For Column
Jul 23, 2005How can you indicate that a FOREIGN KEY constraint references twocolumns in two different tables?"SQL Server Books Online" show an example of how to reference twocolumns in the SAME table:REFERENCES ref_table [ ( ref_column [ ,...n ] )Here is the error and the 'bad' SQL code:Server: Msg 8148, Level 16, State 1, Line 4More than one column FOREIGN KEY constraint specified for column'UserOrGroupId', table 'salesforce3.dbo.AccountShare'.CREATE TABLE salesforce3.dbo."AccountShare" ("Id" varchar(18) PRIMARYKEY , ... , "UserOrGroupId" varchar(18) CONSTRAINTFK_UserOrGroupId6349 FOREIGN KEY REFERENCES "User"(Id) REFERENCES"Group"(Id) , ... )
View 2 Replies View RelatedConstraint On Column
Dec 13, 2007Hmm,
I'm creating a table that contains information from two other tables. I'd like to have a constraint on some columns so that thay can only contain information that exists in the other two tables. This is what I got:
create table dbo.KUSE_Bills
(
SERVICE_ID int IDENTITY(1,1) NOT NULL primary key,
BILLDATE datetime NOT NULL,
CNAME varchar(100) NOT NULL,
SNAME varchar(100) NOT NULL,
PRICE money NOT NULL,
UNIT varchar(50) NOT NULL,
NUMBER integer NOT NULL,
BILLSUM money NOT NULL
)
GO
I tried something like this:
create table dbo.KUSE_Bills
(
SERVICE_ID int IDENTITY(1,1) NOT NULL primary key,
BILLDATE datetime NOT NULL,
CNAME varchar(100) NOT NULL,
SNAME varchar(100) NOT NULL,
PRICE money NOT NULL,
UNIT varchar(50) NOT NULL,
NUMBER integer NOT NULL,
BILLSUM money NOT NULL
CONSTRAINT chk_cname CHECK (CNAME NOT IN (
SELECT CNAME FROM KUSE_Customer))
)
GO
But subqueries are not allowed...
So how can I do it?
FK Constraint From One Column To Two Different Tables
Apr 13, 2012I have a requirement where one column of a table is supposed to have two foreign key constraints i.e. it can be referring to two different columns in two tables.
View 1 Replies View RelatedUnique Column Constraint
Jun 6, 2008I like to use the management console to design tables, but have
been unable to figure out how to add a unique column constraint.
I have a primary key defined in col1 and want to make col2, char(10),
unique, but keep col1 as the primary key.
I have tried the Check constraint menu path, but do not know how
to write the expression.
If I go along the Indexes/Key path, I am forced to change the primary
key which I do not want to do.
Can anyone help?
TIA, Joe
Column Name In A Primary Key Constraint
Jul 20, 2005Hi allWould there be a easy way to find the column name(s) which constitutea Primary constraint for a table through navigating the systemcatalogs.I found that the PK Constraint object in syscontraints is showing thecolid = 0.TIANorman
View 2 Replies View RelatedDrop Column With Constraint
Sep 25, 2007
Hello !
I am using Microsoft SQL Server 2000
I am trying to drop a column that has a constraint, executing the script inside a transaction:
BEGIN TRANSACTION
ALTER TABLE MOPTeste DROP CONSTRAINT FK_IDMOPPais
ALTER TABLE MOPTeste DROP COLUMN IDMOPPais
COMMIT
If i dont commit the drop constraint, it wont let me drop the column
Solutions?
How To Pick Alphabet In A String
Aug 9, 2013I need to increment values
I have written this script execute this :
This is for this scenario
Insert Into #String SELECT 'S601-S630',1,'Desc1'
Drop table #IDs
CREATE TABLE #IDs(ID INT IDENTITY(1,1) ,String VARCHAR(100),Flag Int,Description VARCHAR(1000))
CREATE TABLE #string(ID INT IDENTITY(1,1) ,String VARCHAR(100),Falg Int,Descript VARCHAR(1000))
DECLARE @min INT ,@Max INT ,@String VARCHAR(50),@Start VARCHAR(50),@End VARCHAR(50),@Flag INT,@Desc VARCHAR(1000)
[Code] ....
How I need to increment if the input is like this
Insert Into #String SELECT '6S01-6S30',1,'Desc1'
if alphabet is in middle of the number??
Ordering Table By Alphabet
Aug 4, 2014I have one table with one column:
region
Global
USA
England
Germany
Spain
What I want is that the first entry Global is always in the first row the rest should be ordered by alphabet.
I tried this but order by works only for the result of union:
SELECT * FROM csappcidb_region WHERE region='Global'
UNION ALL
SELECT * FROM csappcidb_region WHERE region<>'Global' ORDER BY region
What else can I do?
Greek Alphabet Ordering
Jul 20, 2005Got a tough one here for you SQL junkies.I'm working on a website (in ASP) for a national greek/collegeorganization. All it's college chapters have greek chapter names,i.e. Alpha Chapter, Delta Chapter, Delta Iota Chapter, Gamma PhiChapter, ect. ect.I need the SQL to return the chapters in greek alphabet ordering. Seebelow:1. Alpha2. Beta3. Gamma4. Delta5. Epsilon6. Zeta7. Eta8. Theta9. Iota10. Kappa11. Lambda12. Mu13. Nu14. Xi15. Omicron16. Pi17. Rho18. Sigma19. Tau20. Upsilon21. Phi22. Chi23. Psi24. OmegaBasically I need a way to specify this type of presedence for wordingand keep all the results in greek-letter order, so Sigma Upsilon comesbefore Sigma Tau, and so on.Also, to make it even more difficult, these are written words, not theactual greek symbols like α β etc. Everything is stored inthe DB as Alpha Beta Whateva Chapter.Hopefully some of you SQL junkies will be able to help on this one ;)
View 2 Replies View RelatedCHECK Constraint - Referencing Another Column
Aug 31, 2000I receive the following error when creating a CHECK constraint that references another column. According to the good old Wrox SQL Server book, I'm using the correct syntax. Anyone have any ideas???
Thanks in advance!
Server: Msg 8141, Level 16, State 1, Line 1
Column CHECK constraint for column 'end_date' references another column, table 'Session'.
Here's an example of the script that I'm using:
CREATE TABLE Session (
session_key char(18) NOT NULL,
course_key char(18) NOT NULL,
site_key char(18) NOT NULL,
instructor_key char(18) NOT NULL,
start_date smalldatetime NULL,
end_date smalldatetime NULL
CHECK (end_date >= start_date)
)
.
ALTERing A Column CHECK Constraint
Aug 18, 1999How do I alter a column check constraint?
I have the table:
CREATE TABLE Mytable(
mykey integer,
mycol integer
CHECK(mycol BETWEEN 1 AND 2)
PRIMARY KEY(mykey))
How do I change the constraint to
CHECK(mycol BETWEEN 0 AND 2)
...without losing any data?
Thanks!
Jim
Trigger? Constraint? Computed Column?
Feb 23, 2007Hi.
I was wondering how I should go about doing this thing. I need to put a value in a column that is based on values on other columns in the same row.
When this statement executes I need to put a value in Col3.
insert into myTable(Col1, Col2)
values(25, -14)
Something like so:
if(Col1 >0 AND Col2 <0)
set Col3 = Col1 - Col2
else
set Col3 = Col1;
I don't now quite how to solve this. I am really going to need this value in a column. Calculating the value at retrieval is not on option...
I appreciate all help. I'm using SQL Server 2005.
Thanks!
Alter Column With Default Constraint
Dec 7, 2001I can't seem to get the syntax correct for ALTERing an existing column with a default constraint. I've been to Help and BOL. There are examples that show how to use the ALTER command to add a column with a default constraint but not how to do it on an existing column.
Any help would be appreciated.
Sidney Ives
Check Constraint On Part Of Column
Jun 6, 2007Can anyone please tell me how can i create a uniqueness contraint on part of column and index that part too. i.e.
consider the following table.
table A
Col1
furadfaf
fsradfasd
dddafadsf
hjfhdfjakdj
now i want only left three characters of the Col1 to be unique and indexed.
any idea ??????
Unique Constraint On Nullable Column
Jul 16, 2004I have a producer table with a nullable column that stores SSN's. In some cases producers inherit SSN's from other producers. These records will have a null producer.ssn and a record stored in a child table to track the inheritance. Anyway, I've found two techniques to enforce uniqueness on a nullable column and wanted to get opinions as to which was better. First, write a trigger. Second, create a computed column that has a unique constraint on it. The computed column would use the SSN if not NULL Else use the PK identity value of the record. EXAMPLE DML:CREATE TABLE test ( ssn CHAR(9) NULL, testId INT identity(1,1) NOT NULL, ComputedConstraint AS CASE WHEN ssn IS NULL THEN CAST(testId AS CHAR(9)) ELSE ssn END, UNIQUE (ComputedConstraint)) Any comments would be greatly appreciated.
View 6 Replies View RelatedUNQIUE Constraint On String Column?
Jan 21, 2008What do you guys think about creating a unique constraint on a string column in a database?
Currently, I'm enforcing uniqueness through the stored procedure that inserts rows into the table. E.g.
PROCEDURE addRow( name )
DECLARE r INT;
SELECT COUNT(*) INTO r FROM foo WHERE foo.foo_name = name;
IF r = 0 THEN
INSERT INTO foo (foo_name) values(name);
ELSE
// Not unique throw an error
END PROCEDURE
What do you guys think?
Column Foreign Key Constraint 'EOR_ITE_REF_EOR'
Mar 17, 2004I am importing data from a flat, comma delimited text file. It appears to properly import all the records and then on the last record it give me the error
INSERT statement conflicted with COLUMN FOREIGN KEY constraint for 'EOR_ITE_REF_EOR'.
Then it goes on to tell me the database, table and column in which the problem occured which is the first column in the table. It looks like it doesn't like the end of the file for some reason (EOR, end of record?) so I tried deleting the last record from the file and it still does it. I do have a file that I have imported that worked so I tried copying the last record of that file and pasting it into the last record of the file I wanted but that did not work either. The ends of file that works and the file that doesn't work look the same and I can find nothing on 'EOR_ITE_REF_EOR'. Any help would be appreciated.
SQL 2012 :: Column Constraint And PK Autoincrement
May 18, 2015Running an insert into a table where a column has a constraint for unique records
i have an autonumber pk that increments but numbers are not in sequence etc. if constraints are found
e.g.
10 records are inserted but only 2 are unique but there is a gap of 8 in the PK autoincrement value (it's like the unique records that were not inserted are still being recorded by the autoincrement).