Doubling a child's height at age 2 can provide an estimate of how tall that child will be in adulthood. (Boys are usually a little taller than that number and girls a little shorter.) That's because by 2 most children have reached the growth chart percentile they will stay on as they grow.nswer: A child's height at age 2 may be predictive of final adult height. But many factors can affect height. As they grow, children should be monitored regularly by a doctor to ensure they are growing properly and to detect any growth problems as soon as possible.
1.9 Cursors in PL/SQL. 1  Every SQL statement executed by the RDBMS has a private SQL area that contains information about the SQL statement and the set of data returned. In PL/SQL, a cursor is a name assigned to a specific private SQL area for a specific SQL statement.
When you open a cursor variable with the OPEN FOR statement, PL/SQL evaluates any variables in the query and uses those values when identifying the result set. Changing the values of the variables later does not change the result set.f you process a query result set by looping through it and running another query for each row, then you can improve performance by removing the second query from inside the loop and making it a subquery of the first query. For more information about subqueries, see Oracle Database SQL Language Reference.