[DERBY-3478] Simple column names specified as part of "AS" clause in a table expression are ignored if the table expression is a view.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1, 10.2.1.6, 10.2.2.0, 10.3.1.4, 10.3.2.1
• Fix Version/s: 10.5.3.1, 10.6.1.0
• Component/s: SQL
• Urgency: Normal
• Issue & fix info: High Value Fix
• Bug behavior facts: Wrong query result
• Assignee: Dag H. Wanvik
• Reporter: A B
• Created: 27/Feb/08 23:02
• Updated: 21/Jan/11 17:51
• Resolved: 27/Aug/09 16:36

Description

Simple repro as follows:

create table t1 (i int, j int);
insert into t1 values (1, 1), (1, -1), (2, 2), (3, -3), (4, 4);

create view v1 as select j, i from t1;
create view v2 (x,y,z) as select j, i, i+j from t1;

– OK: Returns column names specified in AS clause.
select * from t1 as x(a,b);

– OK: Returns column names for the views
select * from v1;
select * from v2;

– WRONG: Ignores column names specified in AS clause for the views.
select * from v1 x(a,b);
select * from v2 as x(a,b,c);

I observed this as far back as 10.0.2.1, so this is not a regression.