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https://issues.apache.org/jira/browse/DERBY-4001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689894#action_12689894
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Knut Anders Hatlen commented on DERBY-4001:
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Same problem exists for NOT IN queries when both sides are not nullable (they
get rewritten to NOT EXISTS in that case).
ij> create table t(x int);
0 rows inserted/updated/deleted
ij> insert into t values 1,2,3;
3 rows inserted/updated/deleted
ij> select * from t where x not in (select x from t where 1<>1); -- ok, not
rewritten because x is nullable
X
-----------
1
2
3
3 rows selected
ij> alter table t alter column x not null;
0 rows inserted/updated/deleted
ij> select * from t where x not in (select x from t where 1<>1); -- wrong
result, query rewritten to NOT EXISTS because x is not nullable
X
-----------
0 rows selected
> Sequence comparison with "ALL" does not yield correct results
> -------------------------------------------------------------
>
> Key: DERBY-4001
> URL: https://issues.apache.org/jira/browse/DERBY-4001
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.3.2.1
> Environment: Windows
> Reporter: Venkateswaran Iyer
> Priority: Minor
> Fix For: 10.4.2.0
>
>
> A query involving "< ALL" does not yield the right results for decimal
> datatype. "< ANY" works, though.
> To reproduce the issue:
> % create table t1(col1 decimal(10,5));
> % insert into t1 values (-21483.64800);
> % insert into t1 values (74837.00000);
> % select col1 from t1 where col1 < ALL (select 0.0 from t1);
> The above yields no results whereas it should return the first row.
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