"Farzana" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > We are using SQLite and we have the table structure as CREATE TABLE > Brand(PcNo numeric(4) Not Null,SubPcNo numeric(4) Not Null,BrandNo > numeric(9) Not Null,BrandDescription nVARCHAR(254)Not Null,ST > numeric(1),TS numeric(14)) where the index is CREATE UNIQUE index > BrandKey1 on Brand(PcNo,SubPcNo,BrandNo). When we use this table in > the application we are suppose to sort the datas by > BrandDescription.So we tried to create a unique index as CREATE > UNIQUE INDEX BrandKey2 on Brand(BrandDescription).But we couldn't > able to create the unique index.
Define "couldn't able". What exactly seems to be the problem? Did you get an error message? What did the message say? Is it possible that the values in BrandDescription column are not in fact unique? If they are not, then naturally you would get an error trying to create a unique index. Try this statement: select * from Brand group by BrandDescription having count(*) > 1; If this returns any rows, you have duplicates. Igor Tandetnik _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
