RE: SQL question with where in clause

Ashish,

Instead of using place markers to "hold a spot" for a variable number of
values, you could build the entire SQL statement, including the actual
values, and then prepare that statement and execute it.

For example,

sqlStatement = "select * from mytable where line in (";

sqlStatement = sqlStatement + "'ABC',";
// Repeat previous statement for each value you need to check for. The last
value should not include the trailing comma after the close single-quote.

sqlStatement = sqlStatement + ")";

Then just prepare that statement and execute it.

Hope this helps!

Richard



-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx]On Behalf Of Ashish Kulkarni
Sent: Thursday, September 13, 2007 3:32 PM
To: Java Programming on and around the iSeries / AS400
Subject: Re: SQL question with where in clause


Hi
No the problem i have is, i dont know how many ? to be
added to my SQL statement
select * from mytable where line in (?,?,?)
will work if i know i will have only 3 values to
replace, but the number of lines selected are going to
come from the screen, which can be from 1 t more then
100, so i wanted to make this portion dynamic

Ashish
--- Michael_Schutte@xxxxxxxxxxxx wrote:

I went back at old code... In places where didn't
want to use the place
marker, I used...

cstmt.setNull( ... );

However, I wasn't doing this with a select statement
it was with a
procedure call that populated databases. But this
may be a place to start
looking at.


Michael Schutte
Admin Professional
Bob Evans Farms, Inc.
"The Secret's the Sauce! Enjoy our new Bob-B-Q
Pulled Pork Knife & Fork
Sandwich!"


java400-l-bounces@xxxxxxxxxxxx wrote on 09/13/2007
02:48:26 PM:

Without seeing your code... I believe you are

wanting to do this. Are
you

doing this?

value1 = 'ABC';
value2 = 'XYZ';
value3 = '';
value4 = '';
value5 = '';
value6 = '';
value7 = '';

sqlStatement = "{SELECT * FROM mytable WHERE line

in (?,?,?,?,?,?,?)});

cstmt = conn.prepareCall(sqlStatement);
cstmt.setString(1, value1);
cstmt.setString(2, value2);
cstmt.setString(3, value3);
cstmt.setString(4, value4);
cstmt.setString(5, value5);
cstmt.setString(6, value6);
cstmt.setString(7, value7);

I cannot test this right now, but this is how I

understand to use the "?"

place holders.



Michael Schutte
Admin Professional
Bob Evans Farms, Inc.
"The Secret's the Sauce! Enjoy our new Bob-B-Q

Pulled Pork Knife & Fork

Sandwich!"


java400-l-bounces@xxxxxxxxxxxx wrote on 09/13/2007

02:35:18 PM:

Hi
I have a sql statment like

select * from mytable where line in ('ABC',

'XYZ')

where this SQL statement is going to extact all

rows

where line is ABC and XYZ,

but now the problem is i do not know if there

are

going to be only one line or 2 or 10, so i

thought i

would define the sql as

select * from mytable where line in ?

and then i created a string like ('ABC', 'XYZ')

and

passed it as input parameter, but it does now

work,

Any ideas for a work around this solution


Ashish

A$HI$H

No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.485 / Virus Database: 269.13.14/999 - Release Date: 9/10/2007
5:43 PM