Add fast analyze to experimental document (#9905) (#9911)

pingcap · Aug 10, 2022 · 58dde2b · 58dde2b
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commit 58dde2b
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diff --git a/experimental-features.md b/experimental-features.md
@@ -8,6 +8,10 @@ aliases: ['/tidb/v5.0/experimental-features-4.0/']
 
 This document introduces the experimental features of TiDB in different versions. It is **NOT** recommended to use these features in the production environment.
 
+## Performance
+
++ [Randomly sample about 10000 rows of data to quickly build statistics](/system-variables.md#tidb_enable_fast_analyze) (Introduced in v3.0)
+
 ## Stability
 
 + Improve the stability of the optimizer's choice of indexes (Introduced in v5.0)