What is conditional statement in SQL?

Conditional statements are used to define what logic is to be executed based on the status of some condition being satisfied.

Can we use if condition in Oracle query?

In Oracle, the IF-THEN-ELSE statement is used to execute code when a condition is TRUE, or execute different code if the condition evaluates to FALSE.

What are the different conditional IF statement in PL SQL?

The IF statement evaluates a condition. The condition can be anything that evaluates to a logical value of true or false such as comparison expression or a combination of multiple comparison expressions. The PL/SQL IF statement has three forms: IF-THEN , IF-THEN-ELSE and IF-THEN-ELSIF .

How do I write an if statement in Oracle?

Syntax for IF-THEN-ELSE Statements:

In the above syntax, keyword ‘IF’ will be followed by a condition which evaluates to ‘TRUE’/’FALSE’.
The control will execute the only if the condition returns .
In case of condition evaluates to then, SQL will execute .

How do I do a conditional statement in SQL?

Any T-SQL statement can be executed conditionally using IF… ELSE. If the condition evaluates to True, then T-SQL statements followed by IF condition in SQL server will be executed. If the condition evaluates to False, then T-SQL statements followed by ELSE keyword will be executed.

How do you write a conditional statement in SQL?

SQL | Conditional Expressions

The CASE Expression: Let you use IF-THEN-ELSE statements without having to invoke procedures.
The DECODE Function : Facilitates conditional inquiries by doing the work of a CASE or IF-THEN-ELSE statement.
COALESCE : Returns the first non-null argument.

How do I do an if statement in SQL?

The IF statement is logically equivalent to a CASE statements with a searched-case-statement-when clause. The IF statement supports the use of optional ELSE IF clauses and a default ELSE clause. An END IF clause is required to indicate the end of the statement.

Can we use if statement in select query in SQL?

Else statement in SQL Server. In MS SQL, IF…ELSE is a type of Conditional statement. Any T-SQL statement can be executed conditionally using IF… ELSE. Once, either IF T-SQL statements or ELSE T-SQL statement is executed, then other unconditional T-SQL statements continues execution.

What is conditional control statement in C?

Conditional Statements in C programming are used to make decisions based on the conditions. Conditional statements execute sequentially when there is no condition around the statements. It is also called as branching as a program decides which statement to execute based on the result of the evaluated condition.

Is process a control statement?

In the process of a program execution, the execution order of each statement has a direct impact on the results of the program. Moreover, many times we need to control the execution order of statements to achieve the function we want. …

How do you write if else in SQL?

In MS SQL, IF…ELSE is a type of Conditional statement….IF… Else statement in SQL Server

If the condition evaluates to True, then T-SQL statements followed by IF condition in SQL server will be executed.
If the condition evaluates to False, then T-SQL statements followed by ELSE keyword will be executed.

What is conditional query?

A “conditional clause” is a portion of a query that restricts the rows matched by certain conditions. In SQL, that means the WHERE or HAVING portions of a SELECT , UPDATE , or DELETE query.

What is a condition in SQL?

Syntax for SQL Condition Types. A condition specifies a combination of one or more expressions and logical (Boolean) operators and returns a value of TRUE, FALSE, or unknown. Conditions have several forms.

Can you use if statements in a SQL query?

The IF statement is used to execute a block of code if a condition is satisfied . If a condition is not satisfied (FALSE) then optionally ELSE statement can be used. In the case of SQL Server, the IF statement is used to execute SQL statements if a condition is TRUE.

What is if statement in SQL?

SQL Else If. The SQL Else If statement is very useful to check multiple conditions at once. It is an extension to the If then Else (which we discussed in the earlier post). If Else statement will only execute the statements when the given condition is either true or False but in real world, we may have to check more than two conditions.

What is a SELECT query in SQL?

A select query is a data retrieval query, while an action query asks for additional operations on the data, such as insertion, updating or deletion. Query languages are used to make queries in a database, and Microsoft Structured Query Language (SQL) is the standard.