JSON_MERGEPATCH function is very useful to update JSON nodes in JSON documents. We can simply pass the JSON required JSON patch to merge with the existing JSON document using the JSON_MERGEPATCH function, it can add or update the JSON node... Read more
PL/SQL provides three collection types − Index-by tables or Associative array Syntax TYPE type_name IS TABLE OF element_type [NOT NULL] INDEX BY subscript_type; table_name type_name; Example TYPE l_tab_type IS TABLE OF NUMBER INDEX BY VARCHAR2(10); l_tab l_tab_type; Variable-size array or... Read more
Oracle NULLIF() Function: The Oracle NULLIF() function accepts only two arguments. If the both arguments are equal it returns a null value. In case the arguments are not equal, the NULLIF() function returns the first argument and if any arguments... Read more
Oracle NVL2 Function: NVL2() function is an extend version of the NVL() function with different options based on whether a NULL value exists. Oracle NVL2() function allow three parameters. If the first parameter is not null, then it returns the... Read more