duplicates query oracle
Posted on 2014-09-03
Hi - pretty new to SQL, but I have a table with an ID column with is apparently unique, i.e. there should be no more than 1 ID per " cost centre". The field of interest is called "code_combination_ID" in a table called apps.gl_code_combinations. Is there a query that can be run to ensure there is only 1 row of data per "code_combination_ID" or check for where there is more than 1 row of data per code_combination_ID?