system-variables: Merge with tidb-specific-sysvars (#3152) #3261
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Please help delete tidb-specific-system-variables.md. @nullnotnil (P.S. Cherry-picker bot can't delete files because of a known bug) |
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Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com>
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cherry-pick #3152 to release-4.0
What is changed, added or deleted? (Required)
This PR proposes merging the system-variables and tidb-specific-system-variables documents together.
The motivation for this, is that they both have the same semantics. It is just a namespace that differs, but this can clearly be visible by sorting the variables in alphabetical order (something else I've done.)
In the process of creating this PR, I discovered that several sysvars are undocumented. I have created #3155 to handle separately.
Also,
SHARD_ROW_ID_BITSwas documented as a system variable but it is not. I have moved it to the statement reference forCREATE TABLEandALTER TABLE.Which TiDB version(s) do your changes apply to? (Required)
What is the related PR or file link(s)?
This is original work.