Abstract: In the software industry, Structured Query Language (SQL) remains a highly sought-after skill required by most employers. SQL is widely adopted as the preferred declarative language to ...

Over the past few years, there has been a subtle but significant shift in the way that data is structured in databases. Whereas yesterday’s databases were typically limited to storing data in rows and ...

SELECT LEVEL AS ID, LEVEL-1 AS aa, LEVEL AS ab, LEVEL+1 AS ac FROM dual CONNECT BY LEVEL<6 SELECT LEVEL AS ID, LEVEL-1 AS aa, LEVEL AS ab, LEVEL+1 AS ac FROM dual CONNECT BY LEVEL<6 ...