[ http://issues.apache.org/jira/browse/DERBY-882?page=comments#action_12364288 ]
Satheesh Bandaram commented on DERBY-882: ----------------------------------------- Merged this fix into 10.1 branch. Sending java\engine\org\apache\derby\impl\sql\compile\ModifyColumnNode.java Sending java\testing\org\apache\derbyTesting\functionTests\master\modifyColumn.out Sending java\testing\org\apache\derbyTesting\functionTests\tests\lang\modifyColumn.sql Transmitting file data ... Committed revision 373066. > Increasing size of varchar type using ALTER TABLE can implicitly change the > column from NOT NULL to NULLable. > ------------------------------------------------------------------------------------------------------------- > > Key: DERBY-882 > URL: http://issues.apache.org/jira/browse/DERBY-882 > Project: Derby > Type: Bug > Components: SQL > Versions: 10.1.2.2, 10.2.0.0 > Environment: generic > Reporter: Satheesh Bandaram > Assignee: Satheesh Bandaram > Fix For: 10.2.0.0, 10.1.3.0 > > Altering size of a varchar column using ALTER TABLE command can change the > column from not nullable to nullable. > ij version 10.1 > ij> connect 'jdbc:derby:bdb;create=true'; > ij> create table a (id integer not null, name varchar(20) not null, primary > key(name)); > 0 rows inserted/updated/deleted > ij> insert into a values (1, 'abc'); > 1 row inserted/updated/deleted > ij> insert into a values (2, null); > ERROR 23502: Column 'NAME' cannot accept a NULL value. > <==== Initially doesn't accept nulls > ij> alter table a alter name set data type varchar(50); > <==== Change size of varchar column > 0 rows inserted/updated/deleted > ij> insert into a values (3, 'hijk'); > 1 row inserted/updated/deleted > ij> insert into a values (4, null); > <==== Now NULLs are accepted > 1 row inserted/updated/deleted > ij> select * from a; > ID |NAME > -------------------------------------------------------------- > 1 |abc > 3 |hijk > 4 |NULL -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
