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Questions tagged [check-constraint]

Check constraints in a relational database ensure that only certain values can be stored in one (or more columns). Check constraints can only validate columns of a single row.

Check constraints validate the value of one or more columns in a single row of a relational table. Typical check constraints are salary > 0 (validating a single column) or hire_date < fire_date (validating the dependency between two columns).

Check constraints can not be used to validate columns between different rows.

All relational DBMS except MySQL support check constraints.

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Sql table adding constraint to check for number limit

I am creating a table in oracle DB and trying to add constraint so that the numbers allowed in the column are 1,2,3. CREATE TABLE "TABLE_EXAMPLE" ( . . "PROTOCOL" NUMBER (1,2,3), ....) CONSTRAINT "CH1" CHECK ("PROTOCOL" BETWEEN 1 AND…
constantlearner
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Metadata of Check constraints SQL Server

I have a SQL Server database that holds a table where a varchar column has a check constraints on it to make sure only a few different words can be entered as a value (names). Like this CONSTRAINT chk_Names CHECK (name IN ('John', 'Eva', 'Carl',…
Fredkr
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check constraint for date column as format wise check its an valid date during the insertion

I want a check constraint. That checks the date column, whether date is in yyyy-MM-dd format or not. I have no idea. But I simply tried, create table #date( dob date check (dob like 'yyyy-MM-dd')) insert #date values( '2018-09-24') So date…
Pugal
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MySQL constraint based on previous row value

I have 2 tables: Table A: AID 1 2 3 4 Table B: BID AID Status 1 1 Open 2 2 Open 3 3 Closed 4 1 Open - don't allow this row until AID 1 Status changes to closed 5 2 Open - don't allow this row until AID 2 Status changes to…
Victordb
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Error in calling user defined function while adding check constraint in oracle

I want to add a check constraint that will make sure no one can enter more than one spouse in family table. I am trying to use a custom defined function for the same. I am doing some thing like this: ALTER TABLE PMT_TRN_FAMILY ADD CONSTRAINT…
Vinay Ranjan Shukla
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Microsoft Access - CHECK errors

these are the requirements that we have to use SQL to code and we have to build in a check on the table. I can't find a helpful answer -- CREATE TABLE data ( data_Name VARCHAR(10) UNIQUE, data_totals INT, CONSTRAINT [data_totals_test] CHECK…
Elizabeth
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I am trying to extract only date value from Oracle's SYSDATE but my query is giving me ORA-02290: check constraint violated

I want to insert current date into my record, First I executed this query successfully. insert into Member values (1, 'Richa Sharma', 'Pune', TO_DATE('10-Dec-05', 'DD-MM-YY'), 'Lifetime', '25000', 5, 50); Then while executing the following query…
Aman Singh
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Check SQL query like enum in MySQL

In MySQL I'm using enum and display variable with enum_range. How can I display check variable range in SQL Server if roles VARCHAR(10) NOT NULL CHECK (roles IN('Admin', 'Staff', 'User'))
marshall
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sqlite.net code first: add check constraint

Given an sqlite database, and a code first approach, how can I add a check constraint to a table? I can't use sql, so is there an attribute or so I can use, like [PrimaryKey]? I'm hoping for something like public class XXX { [PrimaryKey,…
Volker
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PropelORM+PostgreSQL: How do I define an SQL-like CHECK constraint on a column in 'schema.xml'?

A little snippet of a database schema I'm trying to define in my "schema.xml" file:
Ilian Vasilev Kulishev
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SQL DDL - 2 CHECK Constraints on 1 Attribute

Below is DDL for the table I want to create. However, I want the attribute 'Appointment_datetime' to be a future date and during working hours (between 8:00AM and 5:00PM). I can get the future date part with -'CHECK (Appointment_datetime >=…
AbdulHollings
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MySQL Create Table That Accept Check values That Starts With

I created a table for my cellphone contacts and I want to sort the cellphone numbers. Example if the phone number starts with 1 to 3 it belongs to the first telecommunications company and 4 to 6 belongs to other. What I want to do is if the user…
ZeroCool
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Oracle: Function Parameter - how to implement?

i have a little problem and i want to ask you for help :) so to make it simple, im using an oracle database and i want to create an "check constraint" on one of my tables, i.e. below. Table XY Attribute A || Attribute B || Attribute C for…
Alex
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SQL Server 2012: Invoke user defined function in CHECK constraint

I've written a function that returns int Still, I can't use it in CHECK constraint, this error is output: 'myFunction' is not a recognized built-in function name. create table MyTable( attr varchar(100) CHECK(myFunction(attr)=1) ); I also…
Orif Khodjaev
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Will AutoIncrement work with Check constraints?

The question is simple: In SQLite, if I choose to AutoIncrement a primary key of type NUMERIC which has a check constraint like CHECK(LENGTH(ID) == 10), will it work correctly inserting the first value as 0000000001 and so on?
João Rodrigues
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