Batch Update using SQL

Though this is a fairly easy process, its worth mentioning here since it is something which cannot be thought about. Using top x in your query, you could basically choose how many records need to be updated. This is helpful for processing the records as required

UPDATE top (100)  TableName 
SET
    column1 = getdate(),
    remarks = 'batch for API Upload'
 where column2 is not null and column1 > '2012-1-1'