Update top N record in SQL Server

June 9, 2009

(4) Comments

Disclaimer : This tutorial is meant for beginners and for anyone who find it useful. The main purpose of this post to keep everything i find useful for future reference for myself and for others.

SQL statement to update top N records

update daily_sales
set is_calc='Y'
from daily_sales
inner join (select top 100 * from daily_sales where product_category='CA') a
on a.unique_record_id=daily_sales.unique_record_id
and a.milestone_code=daily_sales.milestone_code

Source is SQLServerCentral

SQL – delete from join

June 8, 2009

(1) Comment

Disclaimer : This tutorial is meant for beginners and for anyone who find it useful. The main purpose of this post to keep everything i find useful for future reference for myself and for others.

Simple statement to delete record a table with condition from other related table.

delete prod
from excp_amended_daily_sales_deposits prod
inner join excp_amended_daily_sales ds
on ds.id=prod.id
where  ds.status <> 'Active'
and ds.reason_code='51'

Another example

delete  hist_tbl_ASNHeaders 
from    hist_ShipmentHeader,hist_tbl_ASNHeaders
where hist_ShipmentHeader.ShipmentHeaderID=hist_tbl_ASNHeaders.fkShipmentHeaderID

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