1. PostgreSQL copy of all MySQL created and tested.\n 2. Purchase Orders and Sales Orders and stock level management added to MySQL, PostgreSQL, and server and front end code.

static/PostgreSQL/381.2_tri_Shop_Unit_Measurement.sql

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+
+-- Shop Unit of Measurement
+
+CREATE OR REPLACE FUNCTION before_insert_Shop_Unit_Measurement()
+RETURNS TRIGGER AS $$
+BEGIN
+	IF NEW.created_on IS NULL THEN
+		NEW.created_on = CURRENT_TIMESTAMP;
+	END IF;
+    IF NEW.created_by IS NULL THEN
+		NEW.created_by = CURRENT_USER;
+	END IF;
+
+	RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE TRIGGER tri_before_insert_Shop_Unit_Measurement
+BEFORE INSERT ON Shop_Unit_Measurement
+FOR EACH ROW
+EXECUTE FUNCTION before_insert_Shop_Unit_Measurement();
+
+
+CREATE OR REPLACE FUNCTION before_update_Shop_Unit_Measurement()
+RETURNS TRIGGER AS $$
+BEGIN
+	IF OLD.id_change_set IS NOT DISTINCT FROM NEW.id_change_set THEN
+		RAISE EXCEPTION 'New change Set ID must be provided.'
+			USING ERRCODE = '45000';
+    END IF;
+    
+    INSERT INTO Shop_Unit_Measurement_Audit (
+		id_unit_measurement,
+        name_field,
+        value_prev,
+        value_new,
+        id_change_set
+    )
+	-- Changed name_singular
+	SELECT NEW.id_unit_measurement, 'name_singular', OLD.name_singular, NEW.name_singular, NEW.id_change_set
+		WHERE NOT OLD.name_singular <=> NEW.name_singular
+    UNION
+	-- Changed name_plural
+	SELECT NEW.id_unit_measurement, 'name_plural', OLD.name_plural, NEW.name_plural, NEW.id_change_set
+		WHERE NOT OLD.name_plural <=> NEW.name_plural
+    UNION
+	-- Changed symbol
+	SELECT NEW.id_unit_measurement, 'symbol', OLD.symbol, NEW.symbol, NEW.id_change_set
+		WHERE NOT OLD.symbol <=> NEW.symbol
+    UNION
+	-- Changed is_base_unit
+	SELECT NEW.id_unit_measurement, 'is_base_unit', OLD.is_base_unit, NEW.is_base_unit, NEW.id_change_set
+		WHERE NOT OLD.is_base_unit <=> NEW.is_base_unit
+    UNION
+	-- Changed active
+	SELECT NEW.id_unit_measurement, 'active', OLD.active, NEW.active, NEW.id_change_set
+		WHERE NOT OLD.active <=> NEW.active
+    ;
+
+	RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE TRIGGER tri_before_update_Shop_Unit_Measurement
+BEFORE UPDATE ON Shop_Unit_Measurement
+FOR EACH ROW
+EXECUTE FUNCTION before_update_Shop_Unit_Measurement();