Abstract: SQL:1999 recursive queries are almost a quarter century old. In this standard the recursive queries have the form of recursive common table expressions. In recent years vendors of almost all ...

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects simply to a non-technical, business audience. Over… SQL is a programming ...

Advanced SQL, covering Oracle PL/SQL and PostgreSQL PL/pgSQL with phases on using procedures, functions, triggers, query optimizations, packages, and Docker server setup 💡 ...

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hot buffers moved to head of LRU 40 282 -242 -605 ...

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 ...