database - Updating a table after adding Index -


I'm preparing a database using SQLExpress I have a table that contains three columns I table appears below .

I already have some data in this table. Whenever I want to add a new line, I first someLongString is a calculated hash and query the table to see whether there is already a line with the hash as increasing size of the table, this query'm speaks longer and so I make it someLongText_Hash plan pointer column.

How can please suggest that How do Also in SQL Server Management Studio, after adding to the index, how the existing rows in the table index? What

Why 'are set to just make some' long string 'area unique? In this way do you need to have a hash and an additional primary key?

You can try to use a CHECKSUM. 

  create table [dbo]. [Dummy] ([id] [Int] identified (1,1) NOT NULL, [some Lngstres] [text] No, [some Laँgtekstkaksems] No Constraints [UC-Skeelaँgtekstkackesm] unique (some Longtakstkackesm), Kantroinst [Pike_dimmi ] [Primary] TEXTIMAGE_ON [Primary] GO  
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