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update the variable scope (#15655) #15661

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Dec 11, 2023
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update the variable scope (#15655) #15661

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2 changes: 1 addition & 1 deletion information-schema/information-schema-variables-info.md
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Expand Up @@ -46,7 +46,7 @@ SELECT * FROM variables_info ORDER BY variable_name LIMIT 3;
Fields in the `VARIABLES_INFO` table are described as follows:

* `VARIABLE_NAME`: the name of the system variable.
* `VARIABLE_SCOPE`: the scope of the system variable. `SESSION` means that the system variable is only valid in the current session. `INSTANCE` means that the system variable is valid in the TiDB instance. `GLOBAL` means that the system variable is valid in the TiDB cluster.
* `VARIABLE_SCOPE`: the scope of the system variable. `SESSION` means that the system variable is only valid in the current session. `INSTANCE` means that the system variable is valid in the TiDB instance. `GLOBAL` means that the system variable is valid in the TiDB cluster. `NONE` means that the system variable is read only in the TiDB cluster.
* `DEFAULT_VALUE`: the default value of the system variable.
* `CURRENT_VALUE`: the current value of the system variable. If the scope includes `SESSION`, `CURRENT_VALUE` is the value in the current session.
* `MIN_VALUE`: the minimum value allowed for the system variable. If the system variable is not numeric, `MIN_VALUE` is NULL.
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