diff -aur mysqlcompat-1.0b3.orig/datetime.sql mysqlcompat-1.0b3/datetime.sql
--- mysqlcompat-1.0b3.orig/datetime.sql	2005-12-10 06:26:53.000000000 +0100
+++ mysqlcompat-1.0b3/datetime.sql	2008-12-19 10:39:12.000000000 +0100
@@ -503,6 +503,11 @@
   SELECT $3 + ($2 operator(pg_catalog.||) ' ' operator(pg_catalog.||) $1)::interval
 $$ IMMUTABLE STRICT LANGUAGE SQL;
 
+CREATE OR REPLACE FUNCTION timestampadd(text, integer, timestamp with time zone)
+RETURNS timestamp with time zone AS $$
+  SELECT $3 + ($2 operator(pg_catalog.||) ' ' operator(pg_catalog.||) $1)::interval
+$$ IMMUTABLE STRICT LANGUAGE SQL;
+
 -- TIMESTAMPDIFF()
 -- Note that first parameter needs to be quoted in this version
 
@@ -650,10 +655,10 @@
 RETURNS text AS $$
   SELECT CASE
     WHEN EXTRACT(WEEK FROM $1)::integer = 53 THEN
-      pg_catalog.lpad(EXTRACT(YEAR FROM $1) - 1, 4, '0') || '53'
+      pg_catalog.lpad((EXTRACT(YEAR FROM $1) - 1)::text, 4, '0') || '53'
     ELSE
-      pg_catalog.lpad(EXTRACT(YEAR FROM $1) - 1, 4, '0')
-        || pg_catalog.lpad(EXTRACT(WEEK FROM $1), 2, '0')
+      pg_catalog.lpad((EXTRACT(YEAR FROM $1) - 1)::text, 4, '0')
+        || pg_catalog.lpad(EXTRACT(WEEK FROM $1)::text, 2, '0')
     END
 $$ IMMUTABLE STRICT LANGUAGE SQL;
 
diff -aur mysqlcompat-1.0b3.orig/string.sql mysqlcompat-1.0b3/string.sql
--- mysqlcompat-1.0b3.orig/string.sql	2005-12-13 02:41:19.000000000 +0100
+++ mysqlcompat-1.0b3/string.sql	2008-12-19 10:39:42.000000000 +0100
@@ -189,7 +189,7 @@
 -- XXX: WILL fail if $2 is '0'
 CREATE OR REPLACE FUNCTION export_set(bigint, text, text, text, integer)
 RETURNS text AS $$
-  SELECT pg_catalog.rtrim(pg_catalog.replace(pg_catalog.replace(reverse(pg_catalog.lpad(bin($1), $5, '0')), 1, $2 operator(pg_catalog.||) $4), 0, $3 operator(pg_catalog.||) $4), $4)
+  SELECT pg_catalog.rtrim(pg_catalog.replace(pg_catalog.replace(reverse(pg_catalog.lpad(bin($1), $5, '0')), '1', $2 operator(pg_catalog.||) $4), '0', $3 operator(pg_catalog.||) $4), $4)
 $$ IMMUTABLE STRICT LANGUAGE SQL;
 
 CREATE OR REPLACE FUNCTION export_set(bigint, text, text, text)
@@ -682,7 +682,7 @@
 -- Depends on: CONV()
 CREATE OR REPLACE FUNCTION oct(integer)
 RETURNS text AS $$
-  SELECT conv($1, 10, 8)
+  SELECT conv($1::text, 10, 8)
 $$ IMMUTABLE STRICT LANGUAGE SQL;
 
 -- OCTET_LENGTH()