delete data FIFO method

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C#

SQL-Server

SQL-Server-2008

how do i delete a data from table using FIRST IN FIRST OUT (FIFO) method.i have date and ID.
using C# and SQL2008.

Posted 29-Aug-13 5:29am

dnsserver

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phil.o 29-Aug-13 11:31am

Could you explain why you need to mix the notion of FIFO with some database delete-query ?
The database system takes care of deleting records as per the rules you give ; why on hell do you want to control the order in which records will be deleted ?

dnsserver 29-Aug-13 11:40am

include my application first i add some items in beginning of the month.so i want to remove added item in last of the same month.(i want to firstly remove first added items).so that's why asked how to delete items using FIFO method..
thnx..

phil.o 29-Aug-13 11:46am

You cannot control the order in which the database system will delete records.
But, you control what will be deleted with the WHERE clause. See my answer.

[no name] 29-Aug-13 11:40am

So write a query for the first occurring date and delete it. What is the actual problem?

dnsserver 29-Aug-13 11:54am

actual problem is i have some items.(example book,item code is 000b). so added some books book count is increase.i want to remove some books and book count is decrease remove no of books.first i want to remove first added book.that's actual i want.

[no name] 29-Aug-13 12:04pm

Okay so your "question" and actual problem have absolutely nothing to do with each other. How is it that you expect to get help when you cannot define an actual problem?

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Nitesh Kejriwal · Accepted Answer · 2013-08-29T05:49:00

You are confusing yourself! As per comments made you can do a simple delete based on either Date field or ID field.

Assuming you are inserting the records in incremental order for either of the date /ID columns, you can delete the 1st record easily.

In case you are not inserting data in incremental order in any of the fields, you should add a IDENTITY column to your table and delete data based on the value of this identity table.

Hope this helps!

phil.o · Accepted Answer · 2013-08-29T05:49:00

QUOTE: include my application first i add some items in beginning of the month.so i want to remove added item in last of the same month.(i want to firstly remove first added items).so that's why asked how to delete items using FIFO method..
thnx..

Then it seems that you need, in your table, a column holding the date the record was added.
And you can delete the records with specifying this column in your WHERE clause (cannot really give a precise SQL statement as your requirement still seems a little bit obscure to me).

Start from here and come back if you have problems along the way.

delete data FIFO method

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