Updating fetch in plsql online dating feeds
My mentor told me that when querying data I should always use a cursor FOR loop, even for a single row lookup. It’s great to learn from others, and it’s especially wonderful when the lesson you learn is simple and easy to remember.He says it’s the easiest way to fetch data, and Oracle Database automatically optimizes it in Oracle Database 10g and above. It’s not so great, however, when the advice is simplistic and results in suboptimal code.
But there’s a problem with using a cursor FOR loop for a single-row fetch: the resulting code is very misleading. However, from a best practices standpoint, writing code that is transparent in purpose and easy to read and understand is most important.When a cursor is based on a join, only the (SELECT MAX(Rate Change Date) FROM Human Resources. There can be a situation where you have to use a cursor, even though the experts say not to use cursors or to avoid them as much as possible.The returning clause retrieves the rows affected by a DML statement.You can specify this clause for tables and materialized views and for views with a single base table.