Reason behind this query ,SELECT * FROM table WHERE 1 0

HEllo,
I would like to know the reason behind using this query ,
SELECT * FROM <table> WHERE 1 < 0
before executing the actual SQL query.
Is there any special reason or the JDBC receiver side is configured like that.
Is there any option to overcome this process like, can we remove this option or stop using this.
Why the JDBC adapter basically sending this query on the DB?
Thanks,
Soorya,

Hi,
if you run this query, you wont be able to see any records of the table.
SELECT * FROM <table> WHERE 1 < 0
if you run this query you will see all records
SELECT * FROM <table> WHERE 0 < 1
same with SELECT * FROM <table> WHERE 1=1
So you can check this out that whats happening in your code before executing actual query. just try to co-relate.
regards
Aashish Sinha
PS : reward points if helpful

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"Nancy *Adobe Community Expert*" <[email protected]>
wrote in message
news:[email protected]...
>I would think so .. now that you have the core statement
working .. try
>adding the other portions. Put the main statement in ( )
and add the
>others. Like this:
>
> SELECT *
> FROM dbo.qryOrders
> WHERE (orderID IN (SELECT qryPaidOrders.orderID FROM
qryPaidOrders)
> ORDER BY orderdate ASC) AND (customerid = MMColParam1)
AND (vanopID =
> MMColParam2)
>
> See what that gives you and fiddle with those till you
get what you want.
>
>
> --
> Nancy Gill
> Adobe Community Expert
> BLOG:
http://www.dmxwishes.com/blog.asp
> Author: Dreamweaver 8 e-book for the DMX Zone
> Co-Author: Dreamweaver MX: Instant Troubleshooter
(August, 2003)
> Technical Editor: DMX 2004: The Complete Reference, DMX
2004: A
> Beginner's
> Guide, Mastering Macromedia Contribute
> Technical Reviewer: Dynamic Dreamweaver MX/DMX: Advanced
PHP Web
> Development
>
>
>
>
> "tradmusic.com" <[email protected]> wrote
in message
> news:[email protected]...
>> Hi,
>>
>> After a bit of twiddling, I changed the statement to
this:
>>
>> SELECT *
>> FROM dbo.qryOrders
>> WHERE orderID IN (SELECT qryPaidOrders.orderID FROM
qryPaidOrders)
>> ORDER BY orderdate ASC
>>
>> ...and it displays only those records who appear in
the Paid Orders
>> table. If I change this to NOT IN, it displays only
the orders in the
>> Orders table.
>>
>> Ideal, but I need to apply the customerID and
vanopID variables....is
>> that possible within this one statement?
>>
>> Really appreciate the help,
>> Regards
>> Nath.
>>
>> "Nancy *Adobe Community Expert*"
<[email protected]> wrote in message
>> news:[email protected]...
>>> You've added to it since the first post. Take
out the customerID and
>>> vanopID parts and try focusing on just the
orderID part. Get that
>>> working first.
>>>
>>> I would try seeing if you can select those
orderID's that are IN the
>>> subquery first .. that would see whether or not
the problem is the NOT
>>> .. which should work .. but let's see first
whether the culprit is the
>>> query structure or not. See if you can select
the orderID's that are in
>>> the paid orders table from the main query.
>>>
>>>
>>> --
>>> Nancy Gill
>>> Adobe Community Expert
>>> BLOG:
http://www.dmxwishes.com/blog.asp
>>> Author: Dreamweaver 8 e-book for the DMX Zone
>>> Co-Author: Dreamweaver MX: Instant
Troubleshooter (August, 2003)
>>> Technical Editor: DMX 2004: The Complete
Reference, DMX 2004: A
>>> Beginner's
>>> Guide, Mastering Macromedia Contribute
>>> Technical Reviewer: Dynamic Dreamweaver MX/DMX:
Advanced PHP Web
>>> Development
>>>
>>>
>>> "tradmusic.com"
<[email protected]> wrote in message
>>> news:[email protected]...
>>>> Hi Nancy,
>>>>
>>>> Have just tried that, but it is still
displaying records whose orderID
>>>> is also in a record in the Paid Orders
table?
>>>>
>>>> I've got:
>>>>
>>>> SELECT *
>>>> FROM dbo.qryOrders
>>>> WHERE customerID = MMColParam OR vanopID =
MMColParam1 AND orderID NOT
>>>> IN (SELECT qryPaidOrders.orderID FROM
qryPaidOrders)
>>>> ORDER BY orderdate ASC
>>>>
>>>> Hope you can help.
>>>> Thanks. :o)
>>>> Nath.
>>>>
>>>>
>>>> "Nancy *Adobe Community Expert*"
<[email protected]> wrote in message
>>>> news:[email protected]...
>>>>> Why couldn't your inner query just be
SELECT orderID from
>>>>> dbo.tblPaidOrders? Wouldn't the top 100%
be all of them?
>>>>>
>>>>>
>>>>> --
>>>>> Nancy Gill
>>>>> Adobe Community Expert
>>>>> BLOG:
http://www.dmxwishes.com/blog.asp
>>>>> Author: Dreamweaver 8 e-book for the DMX
Zone
>>>>> Co-Author: Dreamweaver MX: Instant
Troubleshooter (August, 2003)
>>>>> Technical Editor: DMX 2004: The Complete
Reference, DMX 2004: A
>>>>> Beginner's
>>>>> Guide, Mastering Macromedia Contribute
>>>>> Technical Reviewer: Dynamic Dreamweaver
MX/DMX: Advanced PHP Web
>>>>> Development
>>>>>
>>>>>
>>>>> "tradmusic.com"
<[email protected]> wrote in message
>>>>>
news:[email protected]...
>>>>>> Hi,
>>>>>>
>>>>>> Two tables. Orders (orderID = PK)
and Paid Orders (orderID = FK)
>>>>>> I want to display a recordset of
orders from the Orders table where
>>>>>> the order ID doesn't appear in the
Paid Orders table.
>>>>>>
>>>>>> I have tried something like this:
>>>>>>
>>>>>> SELECT *
>>>>>> FROM dbo.tblOrders
>>>>>> WHERE orderID NOT IN ( SELECT TOP
100 PERCENT tblPaidOrders.orderID
>>>>>> FROM dbo.tblPaidOrders )
>>>>>>
>>>>>> ...no joy with that though. Would
appreciate some guidance. Thank
>>>>>> you.
>>>>>>
>>>>>> Regards
>>>>>> Nath.
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

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P156550 wrote:>
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