Hello All,Got myself an Oracle problem that I can't seem to find a good way to solve. I'm running a query that is trying to join 2 tables. 1 table can be thought of as the current information ...

Hi, I want to create an upsert statment which works in ORACLE and in H2. I choose the MERGE INTO x USING statment, because it is supported in both DBs. I select from dual in the subquery to be able ...

Advanced subquery You can also nest multiple subqueries to answer even more specific questions. In this exercise, for each of the six continents listed in 2015, you'll identify which country had the ...

Summary functions cannot appear in a WHERE clause, so using a subquery is often a good technique. Employees who earn less than the department's average salary are returned in Output from a ...