docs: Add sort analyze blog #15856
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| ### Non-Materialized Sort | ||
| We have implemented a [non-materializing sort strategy](https://github.com/facebookincubator/velox/pull/15157) designed to improve sorting performance. The approach materializes only the sort key columns and their original vector indices, which are then used to gather the corresponding rows from the original input vectors into the output vector after the sort is complete. It changes the `SortBuffer` to `NonMaterizedSortBuffer`, which consists of three stages: |
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