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A Practical Guide For SQL Tuning (#19108)

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This is an automated cherry-pick of #19108 ### First-time contributors' checklist - [x] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs) that's required for repo owners to accept my contribution. ### What is...

ti-chi-bot

## Change Request Please answer the following questions before submitting your issue. Thanks! 1. Describe what you find is inappropriate or missing in the existing docs. There is cases that...

dbsid

Added VECTOR as supported CAST Type

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### What is changed, added or deleted? (Required) Close #20149 Added VECTOR as supported CAST Type ### Which TiDB version(s) do your changes apply to? (Required) **Tips for choosing the...

mjonss

Also list Global Index as Partitioning feature (as well as Index)

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### What is changed, added or deleted? (Required) close #20498 ### Which TiDB version(s) do your changes apply to? (Required) **Tips for choosing the affected version(s):** By default, **CHOOSE MASTER...

mjonss

## Change Request Please answer the following questions before submitting your issue. Thanks! 1. Describe what you find is inappropriate or missing in the existing docs. Add 'Global index' under...

mjonss

Adding TiDB Cloud backup export documentation

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### What is changed, added or deleted? (Required) TiDB Cloud is introducing a new feature (on GCP deployed clusters) to export backups to a customer provided storage bucket. This PR...

benmeadowcroft

Update the default value of tidb_enable_column_tracking

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### What is changed, added or deleted? (Required) Updates the default value description for the [`tidb_enable_column_tracking`](https://docs.pingcap.com/tidb/stable/system-variables/#tidb_enable_column_tracking-new-in-v540) variable. ``` Connected with driver mysql (8.0.11-TiDB-v8.5.1) Type "help" for help. my:[email protected]:4000=> SHOW VARIABLES...

lilin90

dm: add auto-id-cache-size config

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### First-time contributors' checklist - [x] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) Add documentation...

michaelmdeng

File: [/release-8.1/storage-engine/rocksdb-overview.md](https://docs.pingcap.com/tidbcloud/rocksdb-overview) (the default is 64 KB) -> (the default is 32 KB) The RocsDB block size is 32 KB since v7.1

choudharypankaj

system tables: add a note for DATA_LENGTH, INDEX_LENGTH, and TABLE_SIZE

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### First-time contributors' checklist - [ ] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) Add...

qiancai