system.settings_changes

Contains information about setting changes in previous ClickHouse versions.

Columns:

• type (Enum) - The settings type: Core (general / query settings), MergeTree.
• version (String) — The ClickHouse version in which settings were changed
• changes (Array of Tuple) — A description of the setting changes: (setting name, previous value, new value, reason for the change)

Example

See also

• Settings
• system.settings