(feat) Switched to sqlx.

Signed-off-by: Louis Hollingworth <louis@hollingworth.nl>

migrations/20231026121809_init.up.sql

@@ -0,0 +1,24 @@
+-- SPDX-FileCopyrightText: 2023 Louis Hollingworth <louis@hollingworth.nl>
+--
+-- SPDX-License-Identifier: AGPL-3.0-or-later
+
+-- Add up migration script here
+
+CREATE OR REPLACE FUNCTION manage_updated_at(_tbl regclass) RETURNS VOID AS $$
+BEGIN
+    EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
+        FOR EACH ROW EXECUTE PROCEDURE set_updated_at()', _tbl);
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION set_updated_at() RETURNS trigger AS $$
+BEGIN
+    IF (
+        NEW IS DISTINCT FROM OLD AND
+        NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
+    ) THEN
+        NEW.updated_at := NOW();
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql