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updated sql_reference doc #86

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Jul 8, 2025
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updated sql_reference doc #86

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4 changes: 2 additions & 2 deletions docs/sql_reference.md
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Expand Up @@ -588,13 +588,13 @@ It returns the top 3 client IP addresses that have the most unique user agents.
| 10 | 192.168.1.150 | 690 |


## Why Results Are Approximate
**Why Results Are Approximate**
Results are approximate due to two factors:

1. **HyperLogLog approximation:** Distinct counts are estimated, not exact.
2. **Space-Saving distribution:** Some globally significant client IPs might not appear in individual nodes' top 10 lists due to uneven data distribution.

## Limitations
**Limitations**

- Results are approximate, not exact.
- Distinct count accuracy depends on HyperLogLog algorithm precision.
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