Text adoption mail is often included in the term direct response mail, but by its very nature and objectives it really should be in a category of its own. With this type of mailing the publisher expects to receive exam copy requests and future orders for classroom use.
The PL/SQL WHILE Loop. The WHILE loop, also called a conditional loop, evaluates a condition before each loop executes, and if false, the loop is terminated. If the expression is false when the program reaches the WHILE loop, the loop code is jumped and never executed.Use a WHILE loop when the condition test is required at the start of the loop. The next example contains three WHILE loops.The last loop will never execute because the condition will never be true. The middle loop uses multiple condition tests, using the AND key word.se a WHILE loop when the condition test is required at the start of the loop. The next example contains three WHILE loops. The last loop will never execute because the condition will never be true. The middle loop uses multiple condition tests, using the AND key word.
Difference in While Loop and do While loop. In while loop the condition is checked at the starting of the loop and if it is true then the code inside the loop is executed. This process is repeated till the condition becomes false. In case of do while loop the checking of condition is done at the end of the loop. So even if the condition is false, the script inside the loop is executed at least once. This is the basic difference between do while loop and while loop. Let us start with one simple script with a do while loop to understand the syntax. Here the condition is checked at the end of the loop so the code inside the loop is executed for once. $i=1; do{.