How do you write if else condition in PL SQL?

How do you write if else condition in PL SQL?

The IF-THEN-ELSIF statement allows you to choose between several alternatives. An IF-THEN statement can be followed by an optional ELSIF…ELSE statement. The ELSIF clause lets you add additional conditions.

What are the two types of the IF conditional statement in PL SQL?

An IF statement has two forms: IF-THEN and IF-THEN-ELSE. An IF-THEN statement allows you to specify only one group of actions to take. In other words, this group of actions is taken only when a condition evaluates to TRUE. An IF-THEN-ELSE statement allows you to specify two groups of actions.

How many else clauses can an if statement in PL SQL have?

An IF statement can have any number of ELSIF clauses; the final ELSE clause is optional. Boolean expressions are evaluated one by one from top to bottom. If any expression returns TRUE , its associated sequence of statements is executed and control passes to the next statement.

What is IF statement in Plsql?

The IF statement allows you to either execute or skip a sequence of statements, depending on a condition. The IF statement has the three forms: – IF THEN. – IF THEN ELSE. – IF THEN ELSIF.

What is conditional control statement in PL SQL?

Conditional control statements are those which allow you to control the execution flow of the program depending on a condition. In other words the statements in the program are not necessarily executed in a sequence rather one or other group of statements are executed depending on the evaluation of a condition.

What are the conditional statements in PL SQL?

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 .

Which is conditional control statement?

Conditional Control (Selection Control or Decision Control) :- In conditional control , the execution of statements depends upon the condition-test. If the condition evaluates to true, then a set of statements is executed otherwise another set of statements is followed.

What are the four variants of IF statement?

There are three forms of IF statements: IF-THEN , IF-THEN-ELSE , and IF-THEN-ELSIF . The simplest form of IF statement associates a Boolean expression with a sequence of statements enclosed by the keywords THEN and END IF .

What is PL SQL?

Structured programming through functions.

Does SQL have if statements?

SQL Server provides the capability to execute real-time programming logic using SQL IF Statement. In the following SQL IF Statement, it evaluates the expression, and if the condition is true, then it executes the statement mentioned in IF block otherwise statements within ELSE clause is executed.

How to use MySQL if statement in a SELECT query?

‘IF’ with ‘SELECT’ using – IF() function. In this section, we will be using the SELECT with IF() function. Syntax:-SELECT column1,column2,…| ALL , IF( , value_if_condition_true ,value_if_condition_false) FROM table_references; column1, column2,…| ALL – is the list of fields selected.

How do you select in SQL?

A few weeks ago, I made a short post here about the fact that a simple SELECT in the default isolation level can trigger an index lock escalation on a SQL Server. This sparked a small discussion in the comments about how and why. That’s why I promised to