Top "Check-constraints" questions

CHECK constraints enforce domain integrity by limiting the values that are accepted by one or more columns.

Can CHECK constraints act like if else?

I have a table with 4 columns: (ID (PK, int, NOT NULL), col1 (NULL), col2 (NULL), col3 (NULL)) I'd like to …

sql sql-server check-constraints
add CHECK constraint to already populated table

I created a table called test with column called code: create table test( code char(3) not null); I then populated …

sql sql-server-2008-r2 check-constraints
CHECK CONSTRAINT in Oracle SQL

I have the following table Goods_In_Wagon(Goods_ID,Wagon_ID,Total_Weight). I need to create a number …

sql oracle constraints check-constraints
Check constraint in SQL Server 2008

Please, I just starting to learn SQL and got stuck. I'm trying to build a database for my test project, …

sql-server-2008 check-constraints
SQL can I have a "conditionally unique" constraint on a table?

I've had this come up a couple times in my career, and none of my local peers seems to be …

sql sql-server sql-server-2005 unique-constraint check-constraints
Date range overlapping check constraint

I've a simple table in sql server 2005 with 3 columns: DateStart, DateEnd and Value. I tried to set a "table check …

sql-server database sql-server-2005 database-design check-constraints
Create custom error message in check constraints in SQL SERVER 2008

I'd like to see the ability to attach custom error messages to CONSTRAINT objects, specifically CHECK constrints. Either directly or …

sql-server database sql-server-2008 check-constraints
Oracle 11g - Check constraint with RegEx

I'm using Oracle 11g, and trying to create a table define constraints on the creation. I was trying to add …

sql regex oracle oracle11g check-constraints
Postgresql: Violates check constraint. Failing row contains

I tried to insert some data in a database with postgresql but still showing the same message: ERROR: new row …

sql postgresql pgadmin check-constraints
MySql workbench CHECK constraint

Here I want to create 2 CHECK constraint before the record insert to the database. ALTER TABLE SubjectEnrollment ADD CONSTRAINT register …

mysql mysql-workbench check-constraints