SQL Duplicates Count Query for two or more columns
This query uses a commonly used query (CTE) to group the results and count duplicates in the zip_to_fips table. The first part of the query, the CTE, selects the columns «fips», «cnty_name» and adds an additional column «DuplicateCount» that uses the ROW_NUMBER() function to assign a unique number to each row that has equal values… Leer más »