reset all sequences on a postgres db

reset.sql

SELECT  'SELECT SETVAL(' ||quote_literal(S.relname)|| ', MAX(' ||quote_ident(C.attname)|| ') ) FROM ' ||quote_ident(T.relname)|| ';'
FROM pg_class AS S, pg_depend AS D, pg_class AS T, pg_attribute AS C
WHERE S.relkind = 'S'
    AND S.oid = D.objid
    AND D.refobjid = T.oid
    AND D.refobjid = C.attrelid
    AND D.refobjsubid = C.attnum
ORDER BY S.relname;

SELECT
'SELECT SETVAL(' ||
quote_literal(quote_ident(sequence_namespace.nspname) || '.' || quote_ident(class_sequence.relname)) ||
', COALESCE(MAX(' ||quote_ident(pg_attribute.attname)|| '), 1) ) FROM ' ||
quote_ident(table_namespace.nspname)|| '.'||quote_ident(class_table.relname)|| ';'
FROM pg_depend
INNER JOIN pg_class AS class_sequence
ON class_sequence.oid = pg_depend.objid
AND class_sequence.relkind = 'S'
INNER JOIN pg_class AS class_table
ON class_table.oid = pg_depend.refobjid
INNER JOIN pg_attribute
ON pg_attribute.attrelid = class_table.oid
AND pg_depend.refobjsubid = pg_attribute.attnum
INNER JOIN pg_namespace as table_namespace
ON table_namespace.oid = class_table.relnamespace
INNER JOIN pg_namespace AS sequence_namespace
ON sequence_namespace.oid = class_sequence.relnamespace
ORDER BY sequence_namespace.nspname, class_sequence.relname;