Using Array content in IN expression

[jabernet]

Is it possible in the new DB2 9.5 to use the content of an array in an
IN expression?

Say we have the ddl:

CREATE TYPE Numbers AS Integer ARRAY[];

CREATE tab1 AS (
id integer,
numbers Numbers
);

CREATE tab2 AS (
id integer
);
Is such SQL possible:

SELECT tab2.* FROM tab2 WHERE tab2.id IN (SELECT numbers FROM tab1
WHERE id = 12)

And are the semantics, that it will match all rows from tab2 where the
id is contained in the numbers array from tab1?

Regards,
Janick

[Serge Rielau]

ja******@swissasp.ch wrote:

Is it possible in the new DB2 9.5 to use the content of an array in an
IN expression?

Say we have the ddl:

CREATE TYPE Numbers AS Integer ARRAY[];

CREATE tab1 AS (
id integer,
numbers Numbers
);

CREATE tab2 AS (
id integer
);
Is such SQL possible:

SELECT tab2.* FROM tab2 WHERE tab2.id IN (SELECT numbers FROM tab1
WHERE id = 12)

And are the semantics, that it will match all rows from tab2 where the
id is contained in the numbers array from tab1?

IN (SELECT numbers FROM (UNNEST(numberarray)) AS X(numbers)

Now, ARRAYs are supported in stored procedures only.
No column type.

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab

[db2]

This is a frequently used query.
I think upgrading to 9.5 might need lot of code changes.
Thanks,
Joseph
http://db2examples.googlepages.com
On Jan 9, 3:41*am, Serge Rielau <[e-mail]:

[e-mail] wrote:

Is it possible in the new DB2 9.5 to use the content of an array in an
IN expression?

Say we have the ddl:

CREATE TYPE Numbers AS Integer ARRAY[];

CREATE tab1 AS (
* id integer,
* numbers Numbers
);

CREATE tab2 AS (
* id integer
);

Is such SQL possible:

SELECT tab2.* FROM tab2 WHERE tab2.id IN (SELECT numbers FROM tab1
WHERE id = 12)

And are the semantics, that it will match all rows from tab2 where the
id is contained in the numbers array from tab1?

IN (SELECT numbers FROM (UNNEST(numberarray)) AS X(numbers)

Now, ARRAYs are supported in stored procedures only.
No column type.

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab- Hide quoted text -

- Show quoted text -

[jabernet]

IN (SELECT numbers FROM (UNNEST(numberarray)) AS X(numbers)

>
Now, ARRAYs are supported in stored procedures only.
No column type.

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab

Ok, but I could use this in static SQL like

SELECT * FROM tab1 WHERE col1 IN (SELECT numbers FROM
(UNNEST(:numberarray)) AS X(numbers)

where numbearray would be a host-variable (in java, say)?
Because this would be really cool, as right now, we often pass a set
of ids as a string to a stored procedure and then have to create
dynamic sql like

String sql = "SELECT * FROM tab1 WHERE col1 IN ("+ids+") ";

Regards,
Janick

[Serge Rielau]

ja******@swissasp.ch wrote:

>IN (SELECT numbers FROM (UNNEST(numberarray)) AS X(numbers)

Now, ARRAYs are supported in stored procedures only.
No column type.

Ok, but I could use this in static SQL like

SELECT * FROM tab1 WHERE col1 IN (SELECT numbers FROM
(UNNEST(:numberarray)) AS X(numbers)

No. Stored procedures and CALL statements for now.
Feel free to submit a feature request.
Generalizing Java support would actually be quite simple I believe...

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab

[jabernet]

On 10 Jan., 23:03, Serge Rielau <[e-mail]:

[e-mail] wrote:

IN (SELECT numbers FROM (UNNEST(numberarray)) AS X(numbers)

Now, ARRAYs are supported in stored procedures only.
No column type.

Ok, but I could use this in static SQL like

SELECT * FROM tab1 WHERE col1 IN (SELECT numbers FROM
(UNNEST(:numberarray)) AS X(numbers)

No. Stored procedures and CALL statements for now.
Feel free to submit a feature request.
Generalizing Java support would actually be quite simple I believe...

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab

Thx for the Info. How would I submit a feature request? Through ESR?

Regards,
Janick

[Serge Rielau]

ja******@swissasp.ch wrote:

On 10 Jan., 23:03, Serge Rielau <[e-mail]:

>[e-mail] wrote:

>>>IN (SELECT numbers FROM (UNNEST(numberarray)) AS X(numbers)
Now, ARRAYs are supported in stored procedures only.
No column type.
Ok, but I could use this in static SQL like
SELECT * FROM tab1 WHERE col1 IN (SELECT numbers FROM
(UNNEST(:numberarray)) AS X(numbers)

No. Stored procedures and CALL statements for now.
Feel free to submit a feature request.
Generalizing Java support would actually be quite simple I believe...

Thx for the Info. How would I submit a feature request? Through ESR?

I don't know the acronym...
Do you have an IBM rep?

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab

[jabernet]

I don't know the acronym...

Do you have an IBM rep?

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab

ESR is the support service, where you can create PMRs.

No, I don't think we have any IBM representative (I suppose this is
what rep means? :)).

Regards,
Janick

[Serge Rielau]

ja******@swissasp.ch wrote:

>I don't know the acronym...
Do you have an IBM rep?

ESR is the support service, where you can create PMRs.

OK. Logging a PMR for a feature request leaves a track record.
Now, please don't expect you get the feature because you alone ask for it.
We'll see if there are more requests coming in and prioritize
accordingly as customers start picking up usage.

Cheers
Serge
--
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab