thanx for ur reply dude.. but its showing an error " no such function:
NULL_IF"
Edzard Pasma wrote:
>
> Hello, you are cleverer than you think. Your initial idea to use INSERT OR
> REPLACE might look like:
>
> INSERT OR REPLACE INTO stock_tab(stock_id, prod_batch_code, stock_qty,
> stock_date)
> SELECT
> s.stock_id,
> p.prod_batch_code,
> IF_NULL (s.stock_qty, 0) + p.purchase_qty
> DATETIME('NOW')
> FROM purchase_tab p
> LEFT OUTER JOIN stock_tab s
> ON s.prod_batch_code = p.prod_batch_code
> WHERE p.product_batch_code=1000
> /
> (assuming stock_id PRIMARY KEY)
>
> Best regards, Edzard
>
> --- engelsch...@codeswift.com wrote:
>
> From: Martin Engelschalk <engelsch...@codeswift.com>
> To: General Discussion of SQLite Database <sqlite-users@sqlite.org>
> Subject: Re: [sqlite] how can we solve IF EXIST in SQLite
> Date: Tue, 02 Jun 2009 12:46:58 +0200
>
> Hi,
>
> as far as I know, you cannot do what you want to do in pure SQL.
> However, perhaps someone cleverer can contradict me.
>
> You could first execute the update statement, check if there was a row
> which was updated using sqlite3_changes() (see
> http://www.sqlite.org/capi3ref.html#sqlite3_changes), and then issue the
> insert if there was none.
>
> Martin
>
> robinsmathew wrote:
>> hey thanx for the reply... u leave the things happening inside.. wat i
>> jus
>> wanna do is i wanna insert a new row to a table
>> the table will be like this
>> stock_id PK product_id FK quantity stock_date
>> 10000 1000 10 28-05-2009
>> 10001 1001 5 27-05-2009
>>
>> and wen i insert a new row with values NULL, 1000, 15, 30-05-2009
>>
>> i dont want want it as a new recorde i jus want to update the first row
>> coz
>> its also having the same product id i jus want set the quantity = 10+15
>> and
>> the date new date that is 30-05-2009
>> and suppose if i insert row with different product_id it should be
>> inserted
>> as it is..
>>
>> Martin Engelschalk wrote:
>>
>>> Hi,
>>>
>>> what language is this? it certainly is not SQL or a "query".
>>> I suspect that you can not use "insert or replace" (see
>>> http://www.sqlite.org/lang_insert.html), because you look first for a
>>> record with prod_batch_code=1000, and if you do not find it you insert
>>> one with prod_batch_code = 1003.
>>> S,. it seems to me that you have to implement the logic in your
>>> application.
>>>
>>> Martin
>>>
>>> robinsmathew wrote:
>>>
>>>> hi am new to SQLite can anybody please tell me how this query can be
>>>> solved
>>>> in SQLite?
>>>>
>>>> IF EXISTS (SELECT prod_batch_code FROM stock_tab WHERE
>>>> prod_batch_code=1000)
>>>> UPDATE stock_tab
>>>> SET stock_qty=stock_qty+(SELECT purchase_qty ROM purchase_tab
>>>> WHERE
>>>> oduct_batch_code=1000 )
>>>> WHERE prod_batch_code=1000
>>>> ELSE
>>>> INSERT INTO stock_tab(stock_id, prod_batch_code, stock_qty,
>>>> stock_date) values (20009, 1003, 200,
>>>> DATETIME('NOW') );
>>>>
>>>>
>>> _______________________________________________
>>> sqlite-users mailing list
>>> sqlite-users@sqlite.org
>>> http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
>>>
>>>
>>>
>>
>>
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