How do I write an IIF condition in SQL?
SQL Server IIF() Function
- Return “YES” if the condition is TRUE, or “NO” if the condition is FALSE:
- Return 5 if the condition is TRUE, or 10 if the condition is FALSE:
- Test whether two strings are the same and return “YES” if they are, or “NO” if not:
What is IIF function in SQL?
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.
Does SQL have an IF function?
MySQL IF() Function The IF() function returns a value if a condition is TRUE, or another value if a condition is FALSE.
Does IIF work in SQL Server?
IIF is a logical function in SQL Server. IIF was introduced in SQL Server 2012. IIF is a shorthand way for writing a CASE Expression. IIFs can only be nested up to a maximum level of 10.
What is the difference between IF and IIF in tableau?
IIF function or the sauce of Tableau: IIF functions are the inbetweeners of CASE and IF statements. In other words, an abridged version of the IF function. They are Boolean friendly and are generally used to validate if a condition is met. Apart from being quite intuitive, IIF functions are great label makers.
Why exist is better than in?
The EXISTS clause is much faster than IN when the subquery results is very large. Conversely, the IN clause is faster than EXISTS when the subquery results is very small. Also, the IN clause can’t compare anything with NULL values, but the EXISTS clause can compare everything with NULLs.
What can you substitute for if exists in SQL?
An alternative for IN and EXISTS is an INNER JOIN, while a LEFT OUTER JOIN with a WHERE clause checking for NULL values can be used as an alternative for NOT IN and NOT EXISTS.