A cursor is a pointer to this context area. PL/SQL controls the context area through a cursor. A cursor holds the rows (one or more) returned by a SQL statement. The set of rows the cursor holds is ...

In situations that you need to update data from a table, using data that exists in another table, there are several approaches that you could do. In MySQL for example you can do updates using inner ...

Tim Chapman discusses your iteration choices in SQL Server 2008 and explains why determining which option performs better depends on the situation.