Release 4.2

Refs #488, #602, #762, #790, #805, #808, #811, #816, #821, #822, #824, #825, #828, #829, #831, #833, #834, #836, #837

docs/changelog.rst

@@ -4,19 +4,13 @@
  Changelog
 ===========
 
-.. _unreleased:
+.. _v4_2:
 
-Unreleased
-----------
+4.2 (2026-08-13)
+----------------
 
-- ``table.transform()`` now preserves column-level and composite ``UNIQUE`` constraints, including constraint names, collations, sort order and ``ON CONFLICT`` behavior. Renaming columns updates those constraints, while dropping any constituent column removes the entire constraint. (:issue:`762`)
-- ``table.transform()`` now preserves ``AUTOINCREMENT`` primary keys and their sequence high-water marks. Previously a transform removed ``AUTOINCREMENT`` and could reuse deleted row IDs. (:issue:`602`)
 - New ``table.checks``, ``table.column_checks`` and ``table.table_checks`` introspection properties expose column-level and table-level ``CHECK`` constraints. (:issue:`834`)
 - New ``sqlite_utils.ANY`` marker type for creating and introspecting SQLite ``ANY`` columns. The Python API and CLI can create, add and transform these columns, and ``table.transform()`` and ``table.extract()`` now preserve ``ANY`` columns and their values in ``STRICT`` tables. (:issue:`790`)
-- ``table.transform()`` now preserves ``CHECK`` constraints, including comments within their expressions. Renaming a column rewrites identifier references in checks without changing string literals or function names. Dropping a column drops a check owned by that column, and raises ``TransformError`` if a remaining check depends on it. (:issue:`762`)
-- ``table.transform()`` now preserves comments immediately before or after column definitions. These comments move with the column if it is renamed or reordered, and are removed if the column is dropped. (:issue:`762`)
-- ``table.transform(rename=...)`` now preserves explicit indexes on renamed columns by dropping and recreating those indexes against the new column names. Previously this raised a ``TransformError``. (:issue:`822`)
-- ``table.transform()`` now works for tables that are referenced by views. Previously the ``ALTER TABLE ... RENAME TO`` step raised ``no such table`` if a view referenced the table being transformed. View definitions are left unchanged - see :ref:`python_api_transform_views`. This also fixes a bug where ``transform(keep_table=...)`` silently rewrote dependent views to point at the frozen backup table instead of the live one. (:issue:`831`)
 - ``table.default_values`` now unescapes doubled single quotes in string defaults, so a default such as ``'O''Brien'`` is returned as ``"O'Brien"``. Thanks, `ikatyal2110 <https://github.com/ikatyal2110>`__. (`#811 <https://github.com/simonw/sqlite-utils/pull/811>`__)
 - ``table.default_values`` now decodes unquoted ``TRUE``, ``FALSE`` and ``NULL`` default literals as ``True``, ``False`` and ``None`` respectively. (:issue:`836`)
 - ``table.enable_fts(..., tokenize=...)`` and ``sqlite-utils enable-fts --tokenize`` now safely quote the tokenizer argument, preventing a crafted value from injecting additional SQL. Thanks, `Bunlong Heng <https://github.com/bunlongheng>`__. (`#828 <https://github.com/simonw/sqlite-utils/pull/828>`__)
@@ -27,6 +21,16 @@ Unreleased
 - Improved type annotations throughout the package and added Pyright regression checks to CI. (:issue:`833`)
 - Changing a ``TEXT`` column to ``INTEGER``, ``FLOAT`` or ``REAL`` using ``table.transform()`` or ``sqlite-utils transform`` now converts exact empty strings to ``NULL``. Previously they remained empty strings in the numeric column. Thanks, `ikatyal2110 <https://github.com/ikatyal2110>`__. (:issue:`488`, `#805 <https://github.com/simonw/sqlite-utils/pull/805>`__)
 
+``table.transform()`` can handle many more edge-cases:
+
+- ``table.transform()`` now preserves column-level and composite ``UNIQUE`` constraints, including constraint names, collations, sort order and ``ON CONFLICT`` behavior. Renaming columns updates those constraints, while dropping any constituent column removes the entire constraint. (:issue:`762`)
+- ``table.transform()`` now preserves ``AUTOINCREMENT`` primary keys and their sequence high-water marks. Previously a transform removed ``AUTOINCREMENT`` and could reuse deleted row IDs. (:issue:`602`)
+- ``table.transform()`` now preserves ``CHECK`` constraints, including comments within their expressions. Renaming a column rewrites identifier references in checks without changing string literals or function names. Dropping a column drops a check owned by that column, and raises ``TransformError`` if a remaining check depends on it. (:issue:`762`)
+- ``table.transform()`` now preserves comments immediately before or after column definitions. These comments move with the column if it is renamed or reordered, and are removed if the column is dropped. (:issue:`762`)
+- ``table.transform(rename=...)`` now preserves explicit indexes on renamed columns by dropping and recreating those indexes against the new column names. Previously this raised a ``TransformError``. (:issue:`822`)
+- ``table.transform()`` now works for tables that are referenced by views. Previously the ``ALTER TABLE ... RENAME TO`` step raised ``no such table`` if a view referenced the table being transformed. View definitions are left unchanged - see :ref:`python_api_transform_views`. This also fixes a bug where ``transform(keep_table=...)`` silently rewrote dependent views to point at the frozen backup table instead of the live one. (:issue:`831`)
+
+
 .. _v3_39_1:
 
 3.39.1 (2026-07-25)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "sqlite-utils"
-version = "4.1.1"
+version = "4.2"
 description = "CLI tool and Python library for manipulating SQLite databases"
 readme = { file = "README.md", content-type = "text/markdown" }
 authors = [