safeupdate is a simple extension to PostgreSQL that raises an error if
UPDATE and DELETE are executed without specifying conditions. This
extension was initially designed to protect data from accidental obliteration of
data that is writable by PostgREST.
Build from source using
gmake
gmake install
Activate per-session by running
load 'safeupdate';
Make this mandatory for all databases and connections by adding the following to
postgresql.conf:
shared_preload_libraries=safeupdate
Or enable for a specific database using
ALTER DATABASE mydb SET session_preload_libraries = 'safeupdate';
Once loaded this extension can be administratively disabled by setting
SET safeupdate.enabled=0;
Try to update records without WHERE clause
UPDATE FROM rack SET fan_speed=70;
-- ERROR: UPDATE requires a WHERE clause
Select results from a CTE that attempts to modify data:
WITH updates AS (
UPDATE rack SET fan_speed=70
RETURNING *
)
SELECT * FROM updates;
-- ERROR: UPDATE requires a WHERE clause
Set a column value for a range of records
UPDATE rack SET fan_speed=90 WHERE fan_speed=70;
Set a column value for all the records in a table
UPDATE rack SET fan_speed=90 WHERE 1=1;
Notification of new releases are provided by an Atom feed, and release history is covered in the NEWS file.
