What is the use of sql iif statement in sql server 2012?

Overview of SQL IIF Statement. June 12, 2019 by Rajendra Gupta. SQL Server 2012 introduced a new built-in logical function SQL IIF. It is a shorthand form of writing CASE statement logic or IF-ELSE logic. We explored Case Statement in SQL in my earlier article.
Just so, 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.
Accordingly, what is function in SQL? Functions are used in SQL as they are in many languages to manipulate, modify, format, convert and calculate with data. Officially, Oracle functions are accepting arguments and returning values. Functions can be the kind that operates on each row individually, effecting the display of data for that row or functions that operate on groups.
Next, is the iif statement true in sql server?
In the introduction of SQL IIF Statement, we mentioned that it is a shorthand form of writing CASE statement logic or IF-ELSE logic. Yes, it is true. Internally SQL Server converts the statement into the CASE statement and executes. We can check it using the actual execution plan of a query.
And, how to make a boolean statement in sql iif?
SQL IIF Statement overview 1 Boolean_expression: The first parameter in SQL IIF statement is a boolean expression. ... 2 True_Value: If the boolean_expression is TRUE, it returns value specified in the true_value parameter 3 False_Value: If the boolean_expression is FALSE, it returns value specified in the false_value parameter

18 Similar Question Found

When to use a nested sql iif statement?

We can use Nested SQL IIF statement as well to specify multiple conditions In this SQL IIF function, it checks for the first condition and if the condition is TRUE, it returns the value. In our case, it is FALSE ( Person Vinay does not match with Raj).It checks for the other condition and returns results if it is TRUE.

Why is sql server 2008 iif statement not enabled?

If you are looking for a more compact form (function instead of case) in SQL Server 2008 you can use: Then your statement will be: IIF was introduced in SQL Server 2012, so that is why it does not work in SQL Server 2008 or SQL Server 2008 R2. You can use this solution instead of IIF.

Which is the first parameter in the sql iif statement?

Boolean_expression: The first parameter in SQL IIF statement is a boolean expression. It should be a valid boolean expression else we get an exception True_Value: If the boolean_expression is TRUE, it returns value specified in the true_value parameter

Which is an example of a sql iif statement?

Example 1: SQL IIF statement for comparing integer values. In the following example, specified Boolean expression return False ( 2>3 is not TRUE). Due to this, it returns the value specified in the false_value parameter. Similarly, if the condition is TRUE (5>3 is TRUE) so it returns the value of true_value parameter.

How to use iif and x is null in sql?

In SQL X Is Null also works of course. Checking for something not being Null is the same except you use Not with it ( X Is Not Null ). IIf () is pretty powerful and can be used extensively. However, other useful functions include Switch () & Choose ().

What is an example of multiple iif in sql?

Instead of using a code behind for simple decisions, you can use unlimited multiple IIf statements in an expression behind a textbox. For example, let’s say you have a parameter called HoldType that can have 3 different values, (1, 2, or 3).

What does iif stand for in sql server?

IIF is a shorthand way for writing a CASE expression. It evaluates the Boolean expression passed as the first argument, and then returns either of the other two arguments based on the result of the evaluation.

When to use sql server nested iif function?

By using SQL Server Nested IIF, we are checking one more condition here (@age >= 18 AND @age <= 60). If this condition is True, then it returns first value after the comma, which is You are eligible to Work If the Nested condition fails, it will execute the value at the third argument, which is You are too Old to Work.

How many values does iif ( transact-sql ) return?

Logical Functions - IIF (Transact-SQL) Returns one of two values, depending on whether the Boolean expression evaluates to true or false in SQL Server.

When to use the iif function in sql server?

The IIF () function returns a value if a condition is TRUE, or another value if a condition is FALSE. Required. The value to test Optional. The value to return if condition is TRUE

How does the iif function in sql work?

In this SQL IIF function, it checks for the first condition and if the condition is TRUE, it returns the value. In our case, it is FALSE ( Person Vinay does not match with Raj).It checks for the other condition and returns results if it is TRUE.

How does the iif function work in sql server?

In SQL Server, the IIF () function (not to be confused with the IF statement) is a conditional function that returns the second or third argument based on the evaluation of the first argument. It’s a shorthand way for writing a CASE expression. It’s logically equivalent to CASE WHEN X THEN Y ELSE Z END assuming IIF (X, Y, Z).

How to use iif statements in sql server?

SQL Server Reporting Services (SSRS) – Multiple IIf statements in an expression behind a textbox. Instead of using a code behind for simple decisions, you can use unlimited multiple IIf statements in an expression behind a textbox. For example, let’s say you have a parameter called HoldType that can have 3 different values, (1, 2, or 3).

What does iif mean in sql?

IIF() is one of the new built-in logical function introduced as a Part of Sql Server 2012. IIF() is the shorthand way of writing CASE statement or IF-ELSE statement. In-fact if we see the execution plan the IIF() function internally translates to a CASE statement.

How is the iif function used in sql server?

IIF () Function in SQL Server. The SQL Server IIF () function has three parameters. IIF () function judges or evaluates the first parameter and returns the second parameters if the first parameters is true; otherwise, it returns the third parameters. IIF () function used in SQL Server to add if-else logic to queries.>.

When do i get an error message in sql iif?

We get the following error message. At least one of the result expressions in a CASE specification must be an expression other than the NULL constant. In the error message, you can see it gives information about the CASE specification however we used SQL IIF function. We will look at this in the next example.

What is the syntax of the iif function in sql?

The syntax of the IIF in SQL Server is as follows: If the given Boolean expression (or test condition) is true then it will return True_Value and if the condition is false then False_Value will be returned.

How to define multiple conditions in sql iif?

We can specify multiple conditions in SQL IIF statement as well. Let’s define the following condition The query should return Likes Orange if the person name is not in the IN clause. In the following example, person Vinay does not exist in the variable @Person, so it returns value for a false clause.