Delete Duplicate Rows SQL Server

1. Add an Identity Column to the Table

alter table MASTER
add identity_col int identity(1,1);

2. Delete duplicate data using Below Query (In the GROUP BY CLAUSE you can specify multiple columns if the row is indetified using more than one field)

delete from MASTER where identity_col not in ( select Min(identity_col) from MASTER group by trnx_uid);

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