Enhance Global Statistics merging
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type/enhancement
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Description
## Enhancement
- [ ] Create and get an approved design of sample based Global Stats Merge - #66960
- [ ] Eliminate O(P^2) Histogram Lookup in TopN Merge - #66221 (closed)
- [ ] Fix Histogram Repeat Recalculation - #66221 (closed)
- [ ] Pass Partition Stats (Samples) Directly to Global Merge for both TopN and Buckets (Optional, Higher Risk)
- [ ] Full table ANALYZE #66289 #
- [ ] New system table for storing per partition samples #66303
- [ ] Prune and save per partition samples and FMSketch (if needed) to new system table #66317
- [ ] single partition ANALYZE recalculation of Global Stats, using saved per partition samples for non newly analyzed partitions
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