Bugs item #2604583, was opened at 2009-02-16 07:35
Message generated for change (Comment added) made by stmane
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>Category: SQL/Core
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: z lh (zlh)
>Assigned to: Niels Nes (nielsnes)
Summary: the count() return null while expect 0
Initial Comment:
--the count() return null while expect 0
create table t1( a int , b int ) ;
insert into t1 values ( 3, 1 ) , ( 4, 2 ) , ( 5, 3 ) , ( 6, 4 ) , ( 7, 5 ) ;
select * from t1;
select ( select count( * )+1
from t1 as tt3
where tt3.b < tt2.b )
from t1 as tt2 ;
---------------------------------
--the result : the last SQL should returns 1,2,3,4,5 , not null,2,3,4,5
sql>create table t1( a int , b int ) ;
0 tuples
sql>insert into t1 values ( 3, 1 ) , ( 4, 2 ) , ( 5, 3 ) , ( 6, 4 ) , ( 7, 5 )
;
Rows affected 5
sql>
0 tuples
sql>select * from t1;
+---+---+
| a | b |
+===+===+
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 5 |
+---+---+
5 tuples
sql>select ( select count( * )+1
more> from t1 as tt3
more> where tt3.b < tt2.b )
more>from t1 as tt2 ;
+-----------------+
| sql_add_count_b |
+=================+
| null |
| 2 |
| 3 |
| 4 |
| 5 |
+-----------------+
5 tuples
----------------------------------------------------------------------
>Comment By: Stefan Manegold (stmane)
Date: 2009-02-16 08:08
Message:
zlh,
could you please indicate, which version of MonetDB you are using,
e.g., by selecting either 'SQL CVS Head' or 'SQL "stable"' as 'Group" for
this bug report,
and providing the output of `mserver5 --version`.
Thanks!
----------------------------------------------------------------------
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