coalesce is supported in both Oracle and SQL Server and serves essentially the same function as nvl and isnull . (There are some important ... ... <看更多>

... <看更多>

I'm not sure why nvl should be better than is null, except it is an oracle function(not available on other dbms). I've also preferred is ... ... <看更多>

I have this pl/sql code: CREATE OR REPLACE PACKAGE test_pk_types AS TYPE my_inner_record IS RECORD ( inner_num NUMBER := null, inner_dt DATE ... ... <看更多>