Difference between the expression box and instruction box?

Hello Experts,

What is exact diiference between expression box and instruction box

Except the end and end case?

Thanks in advance.

SShubhangi

A Case statement is used to assign or provide a unique value.

A Case statement is used as an ELSIF ELSE END IF statement to allow multiple statements to be executed for each condition.

for example

Expression box:

v: = case when sysdate > end target_date then 1 0 otherwise;

or

Select case when sysdate > end target_date then 1 0 otherwise like v

...

Case statement:

case

When sysdate > target_date then

v: = 1;

.. all other instructions...

on the other

v: = 0;

.. all other instructions...

end case;

Tags: Database

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