Menu Close

How to check if a parameter is null in IIF?

How to check if a parameter is null in IIF?

First, ISNULL function will check whether the parameter value is NULL or not. If True, it will replace the value with Empty string or Blank. Next, IIF will check whether the parameter is Blank or not.

When to return a false value in SQL IIF?

If the supplier name does not exist for a particular supplier id, it returns the specified false value in SQL IIF statement. We might have different data types for the results. If we have different data types specified in the result conditions, SQL Server gives the highest precedence data type.

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.

When to use a variable in the IIF statement?

We use variables for comparison in the IIF statement. The specified condition (80>70) is TRUE, so it returns the value PASS. In the following example, we want to compare the string data using SQL IIF statement. We want to know the person liking based on the person name.

First, ISNULL function will check whether the parameter value is NULL or not. If True, it will replace the value with Empty string or Blank. Next, IIF will check whether the parameter is Blank or not.

If the supplier name does not exist for a particular supplier id, it returns the specified false value in SQL IIF statement. We might have different data types for the results. If we have different data types specified in the result conditions, SQL Server gives the highest precedence data type.

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.

We use variables for comparison in the IIF statement. The specified condition (80>70) is TRUE, so it returns the value PASS. In the following example, we want to compare the string data using SQL IIF statement. We want to know the person liking based on the person name.