[chore](config) support select experimental session variable #31837
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support select experimental variables: Before change: Before change: select @@experimental_enable_nereids_planner; ERROR 1193 (HY000): errCode = 2, detailMessage = Unknown system variable 'experimental_enable_nereids_planner' show variables like 'experimental_enable_nereids_planner'; +-------------------------------------+-------+---------------+---------+ | Variable_name | Value | Default_Value | Changed | +-------------------------------------+-------+---------------+---------+ | experimental_enable_nereids_planner | false | true | 1 | +-------------------------------------+-------+---------------+---------+ After change: > select @@experimental_enable_nereids_planner; +---------------------------------------+ | @@experimental_enable_nereids_planner | +---------------------------------------+ | 1 | +---------------------------------------+
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Proposed changes
support select experimental variables:
Before change:
After change:
Further comments
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