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Oracle optimizer Or Expansion Transformations

The previous installment of this series examined aggregate subquery removal and subquery coalescing, describing the latter as similar in some ways to an inverse for “Or Expansion” and “Join Factorization”. In this instalment, it’s time to take a closer look at Or Expansion and we’ll move on to Join Factorization in the next instalment.

2022-11-30

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URL Safe or Not?

If I use BASE4_ENCODE() in SQL Server 2025, is the output URL Safe by default?

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