[#DERBY-158] PRIMARY KEY does not imply NOT NULL

Derby

PRIMARY KEY does not imply NOT NULL

Created: 04/Mar/05 06:46 AM Updated: 04/May/05 04:02 AM

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Component/s:

SQL

Affects Version/s:

None

Fix Version/s:

10.1.1.0

Time Tracking:

Not Specified

File Attachments:

File Name	Date Attached	Attached By	Size
derby-158-1.patch	2005-03-05 01:37 PM	Jeremy Boynes	8 kB
derby-158-2.patch	2005-03-06 06:14 AM	Jeremy Boynes	16 kB

Resolution Date:

09/Mar/05 06:25 AM

Description

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PRIMARY KEY does not imply NOT NULL. Derby issues error message:

ij> create table tab (i integer primary key);
ERROR 42831: 'I' cannot be a column of a primary key or unique key because it can contain null values.

This is neither compliant with SQL-92 nor with SQL-99 (Feature E141-08, I think).

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Work Log

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Repository	Revision	Date	User	Message
ASF	#156570	Tue Mar 08 21:22:59 UTC 2005	jboynes	Fix for ~~DERBY-158~~ PRIMARY KEY does not imply NOT NULL Columns specified in a PRIMARY KEY constraint in CREATE TABLE are implicitly set to NOT NULL per the SQL spec. If a PRIMARY KEY constraint is added using ALTER TABLE then all columns must also be NOT NULL. Similarly, columns specified in a UNIQUE constraint must still be explictly NOT NULL.
				Files Changed
				MODIFY /incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/functionTests/master/primarykey.out MODIFY /incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/functionTests/tests/lang/nulls.sql MODIFY /incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/functionTests/tests/lang/db2Compatibility.sql MODIFY /incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/functionTests/tests/lang/primarykey.sql MODIFY /incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/functionTests/master/nulls.out MODIFY /incubator/derby/code/trunk/java/engine/org/apache/derby/impl/sql/compile/TableElementList.java MODIFY /incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/functionTests/master/db2Compatibility.out