In case you have an oracle exadata database machine, always use 100% percent for collecting optimizer statistics on your tables/schemas , in order to benefit from the smart scans .
http://uhesse.com/2012/07/04/no-smart-scan-with-auto_sample_size/
Partition by Expression
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Oracle 26.1 now allows using an *Expression* in the Partitioning Clause.
In earlier releases, you could do this with a Virtual Column defined in the
ta...
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