--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PostgreSQL/Plugins/FastTotalSize.sql	Fri Jan 04 14:43:35 2019 +0100
@@ -0,0 +1,41 @@
+CREATE TABLE GlobalIntegers(
+       key INTEGER PRIMARY KEY,
+       value BIGINT);
+
+INSERT INTO GlobalIntegers
+SELECT 0, CAST(COALESCE(SUM(compressedSize), 0) AS BIGINT) FROM AttachedFiles;
+
+INSERT INTO GlobalIntegers
+SELECT 1, CAST(COALESCE(SUM(uncompressedSize), 0) AS BIGINT) FROM AttachedFiles;
+
+
+
+CREATE FUNCTION AttachedFileIncrementSizeFunc() 
+RETURNS TRIGGER AS $body$
+BEGIN
+  UPDATE GlobalIntegers SET value = value + new.compressedSize WHERE key = 0;
+  UPDATE GlobalIntegers SET value = value + new.uncompressedSize WHERE key = 1;
+  RETURN NULL;
+END;
+$body$ LANGUAGE plpgsql;
+
+CREATE FUNCTION AttachedFileDecrementSizeFunc() 
+RETURNS TRIGGER AS $body$
+BEGIN
+  UPDATE GlobalIntegers SET value = value - old.compressedSize WHERE key = 0;
+  UPDATE GlobalIntegers SET value = value - old.uncompressedSize WHERE key = 1;
+  RETURN NULL;
+END;
+$body$ LANGUAGE plpgsql;
+
+
+
+CREATE TRIGGER AttachedFileIncrementSize
+AFTER INSERT ON AttachedFiles
+FOR EACH ROW
+EXECUTE PROCEDURE AttachedFileIncrementSizeFunc();
+
+CREATE TRIGGER AttachedFileDecrementSize
+AFTER DELETE ON AttachedFiles
+FOR EACH ROW
+EXECUTE PROCEDURE AttachedFileDecrementSizeFunc();