--RECURSION IN SQL IS TYPICALLY IMPLEMENTED USING COMMON TABLE EXPRESSIONS (CTES) SOMETIME WE ALSO USE SELFJOIN FOR RECURSION. --THIS FEATURE IS USEFUL FOR HIERARCHICAL DATA, SUCH AS ORGANIZATIONAL ...

Identify missing drug presciption days by patient using sql r python and excel %let pgm=utl-identify-missing-drug-presciption-days-by-patient-using-sql-recursion-r-python-and-excel; %stop_submission; ...

Abstract: Rollup, a key operation in OLAP queries, is to aggregate multidimensional data on dimensional hierarchies. While the operation can be efficiently implemented on regular hierarchies in data ...