pl sql case assignment

Summary: in this tutorial, you will learn how to use the PL/SQL CASE statement to control the flow of a program. The CASE statement chooses one sequence of statements to execute out of many possible sequences. The CASE statement has two types: simple CASE statement and searched CASE statement. Both types of CASE statements support an optional ...

Summary: in this tutorial, you will learn how to use PL/SQL CASE statement to execute a sequence of statements based on a selector. Introduction to PL/SQL CASE Statement. The PL/SQL CASE statement allows you to execute a sequence of statements based on a selector. A selector can be anything such as variable, function, or expression that the CASE statement evaluates to a Boolean value.

The CASE statement can be used in Oracle/PLSQL. You could use the CASE statement in a SQL statement as follows: (includes the expression clause) SELECT table_name, CASE owner. WHEN 'SYS' THEN 'The owner is SYS'. WHEN 'SYSTEM' THEN 'The owner is SYSTEM'. ELSE 'The owner is another value'. END.

The value of the CASE operand and WHEN operands in a simple CASE statement can be any PL/SQL type other than BLOB, BFILE, an object type, a PL/SQL record, an index-by table, a varray, or a nested table. If the ELSE clause is omitted, the system substitutes a default action. ... you can code an assignment statement using a CASE expression instead.

CASE Statement. CASE statement gives you a clear way to handle conditional logic within PL/SQL blocks. It is a conditional control statement that allows you to execute different blocks of code based on the specified conditions. It is particularly useful when dealing with multiple conditions and provides a more readable and maintainable alternative to nested IF-ELSE statements.

simple_case_statement. selector. Expression whose value is evaluated once and used to select one of several alternatives. selector can have any PL/SQL data type except BLOB, BFILE, or a user-defined type.. WHEN selector_value THEN statement. selector_value can be an expression of any PL/SQL type except BLOB, BFILE, or a user-defined type.. The selector_value s are evaluated sequentially.

The CASE statements supported by PL/SQL are very similar to the CASE expressions. Notice the statement is finished with the END CASE keywords rather than just the END keyword. The PL/SQL CASE statements are essentially an alternative to IF .. THEN .. ELSIF statements. They are control structures that conditionally call blocks of code.

The 'END' marks the end of the CASE statement and, it is a mandatory part of CASE. Example 1: Arithmetic Calculation using Searched Case. In this example, we are going to do arithmetic calculation between two numbers 55 and 5. DECLARE a NUMBER :=55; b NUMBER :=5; arth_operation VARCHAR2(20) :='DIVIDE'; BEGIN.

PL/SQL Case. In Oracle PL/SQL, the CASE statement is used to perform different actions based on the value of an expression. The CASE statement can be used in two forms: simple and searched. The simple form of the CASE statement has the following syntax:

The CASE statement allows you to perform the same operations as the PL / SQL IF-THEN-ELSIF-ELSE control statements, but with the particularity that they can be used within an SQL statement. The syntax of the CASE statement is as follows: CASE [expression] WHEN condition_1 THEN result_1. WHEN condition_2 THEN result_2.

PL/SQL - CASE Statement. Like the IF statement, the CASE statement selects one sequence of statements to execute. However, to select the sequence, the CASE statement uses a selector rather than multiple Boolean expressions. A selector is an expression, the value of which is used to select one of several alternatives.

PL/SQL categories of control statements are: Conditional selection statements, which run different statements for different data values. The conditional selection statements are IF and CASE . Loop statements, which run the same statements with a series of different data values. The loop statements are the basic LOOP, FOR LOOP, and WHILE LOOP .

It is not an assignment but a relational operator. The result of the case statement is either 1 or 0. You select only the records where the case statement results in a 1. Thanks for accepting this as the answer but Tony Andrews solution is a lot more straightforward and, in my view, the better answer. -

Variable assignment with case statement. 22.2.8. Use case statement in a dbms_output.put_line. 22.2.9. Simple CASE statement with range. 22.2.10. Case statement to call procedure. 22.2.11. Return statement with case.

Exercises are designed to enhance your ability to write well-structured PL/SQL programs. Hope, these exercises help you to improve your PL/SQL query skills. Currently following sections are available, we are working hard to add more exercises. Happy Coding! PL/SQL Fundamentals [ 16 Exercises ] PL/SQL DataType [ 8 Exercises ]

PL/SQL is not case sensitive, so lower-case letters are equivalent to corresponding upper-case letters except within string and character literals. ... an initialization clause. However, there are two ways to assign values to all fields in a record at once. First, PL/SQL allows aggregate assignment between entire records if their declarations ...

In PL/SQL program, one of the most common tasks is to select values from columns in a table into a set of variables. In case the data types of columns of the table changes, you have to change the PL/SQL program to make the types of the variables compatible with the new changes. PL/SQL provides you with a very useful feature called variable anchors.

Incidentally, if you were only using the l_tdoay_date value once - and didn't have the dbms_output debugging call at the end - you wouldn't need that variable; you can use case with the function call:. BEGIN CASE TO_CHAR(SYSDATE, 'DAY', 'NLS_DATE_LANGUAGE=ENGLISH') WHEN 'MONDAY' THEN ... And you could use if instead of case here - either works but with only one value being checked you probably ...

A PL/SQL cursor variable previously declared within the current scope. Only the value of another cursor variable can be assigned to a cursor variable. expression. A combination of variables, constants, literals, operators, and function calls. The simplest expression consists of a single variable.