This will insert a row, but if subject or text (or both) already exist. go create trigger insAssset on tblAssets for insert as begin if exists ( select A.ARNumber from tblAssets as A inner join inserted as N on A.AssetIDN.
#CHECKING FR DUPLICACY IN SQL SERVER UPDATE#
INSERT INTO requests ('userid','subject','text','time') VALUES (56,'test','test 1234',6516516) ON DUPLICATE KEY UPDATE time VALUES (time), userid VALUES (userid) Have the relevant columns set to index UNIQUE. Using the following code, I will create a database that allows filestream. Insert statement that checks for duplicate before insert. This cannot be solved easily, but exact copies definitely can.)
Sometimes the files are not perfect duplicates, like if I cropped a picture even a pixel, then it is a different physical picture. (I know this because I pre-created the files. 4 are unique, but one is a duplicate of another.įigure 1. So the second (and third and fourth) time I choose the same picture, it looks different, though it has the exact same bits.įor example, consider the following 5 pictures. I use a naming standard that integrates the files into my database, as well as for the copies to go out for a given day. Perhaps not surprisingly, the same pictures often get chosen a second time. I have tens of thousands of pictures, and I scan them occasionally to add to my directories. In my article “ Filetables, Great For Business, Great For Hobbyist”, I implemented the basis of a hobby database I use for my Twitter accounts and where I post daily pictures of theme parks.Īs my inventory of prepped pictures has grown, one thing has become a major pain. 3 Im trying to find all duplicates in a Table and change one of their values. In SQL Server there are a number of ways to address duplicate records in a table based on the specific circumstances such as: Table with Unique Index - For tables with a unique index, you have the opportunity to use the index to order identify the duplicate data then remove the duplicate records.
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