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Merging (feature) Use Map data type for system logs tables
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Fix for performance tests will be developed here - #25837 |
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Original pull request #23934.
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Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Use
Mapdata type for key-value dictionaries in system logs tables (system.query_log,system.query_thread_log,system.processes,system.opentelemetry_span_log). Virtual columns are created to support old queries. Closes #18698. Authors @hexiaoting, @sundy-li.