Merge pull request #60402 from rschu1ze/doc-settings_changes

Document `system.settings_changes`

docs/en/operations/system-tables/settings_changes.md

@@ -0,0 +1,32 @@
+---
+slug: /en/operations/system-tables/settings_changes
+---
+# settings_changes
+
+Contains information about setting changes in previous ClickHouse versions.
+
+Columns:
+
+- `version` ([String](../../sql-reference/data-types/string.md)) — The ClickHouse version in which settings were changed
+- `changes` ([Array](../../sql-reference/data-types/array.md) of [Tuple](../../sql-reference/data-types/tuple.md)) — A description of the setting changes: (setting name, previous value, new value, reason for the change)
+
+**Example**
+
+``` sql
+SELECT *
+FROM system.settings_changes
+WHERE version = '23.5'
+FORMAT Vertical
+```
+
+``` text
+Row 1:
+──────
+version: 23.5
+changes: [('input_format_parquet_preserve_order','1','0','Allow Parquet reader to reorder rows for better parallelism.'),('parallelize_output_from_storages','0','1','Allow parallelism when executing queries that read from file/url/s3/etc. This may reorder rows.'),('use_with_fill_by_sorting_prefix','0','1','Columns preceding WITH FILL columns in ORDER BY clause form sorting prefix. Rows with different values in sorting prefix are filled independently'),('output_format_parquet_compliant_nested_types','0','1','Change an internal field name in output Parquet file schema.')]
+```
+
+**See also**
+
+- [Settings](../../operations/settings/index.md#session-settings-intro)
+- [system.settings](settings.md)