This whitepaper covers experience of database migration from Oracle to PostgreSQL made by Intelligent Converters for a large cargo delivery company. The key reason of migration was reducing cost of ...

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Students of database courses usually encounter difficulties in learning structured query language (SQL). Numerous studies have been conducted to improve how students learn SQL. However, learning SQL ...

AND PRH.CREATION_DATE BETWEEN PPF1.EFFECTIVE_START_DATE AND PPF1.EFFECTIVE_END_DATE AND PPF2.AGENT_ID(+) = MSI.BUYER_ID AND (:P_PRAPPROVE_FROM_DT IS NULL OR TRUNC(PRH.APPROVED_DATE) BETWEEN ...

There is a text consisting of only the letters A, and B. You are going to play a game with your friend. Without seeing the text, you and your friend both will choose a three-letter code. The one whose ...

所以，我觉得客户单开发的时候，不能把存储过程的调用程序写死; 然后把这些数据库里所有的存储过程，包，函数都转换到这个表里； 所以写了以下这个包，有兴趣的朋友，可以把这个包做得很优化，运行速度更快； ...