IF in SELECT Clause

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How can I return one column or another depending of its value?

I have the following stored procedure (this is just an example):

SELECT 
    Stds.FirstName, 
    Addrs.Address 
FROM
    Students AS Stds 
INNER JOIN 
    Address AS Addrs ON Addrs.StdId = Stds.StdId 
GROUP BY 
    Addrs.FirstName, 
    Stds.Address 

Now the idea is that Addresses have two fields: Address and AddressTwo, I want to return AddressTwo IF Address is NULL for that Student.

Ok, for my particular case, and maybe in general I wanted to use ISNULL().

Response here: Select a column if other column is null

SQL CASE Statement, The SQL CASE Statement. The CASE If no conditions are true, it returns the value in the ELSE clause. If there is no SELECT CustomerName, City, Country Is an expression that returns TRUE or FALSE. If the Boolean expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses. { sql_statement| statement_block} Is any Transact-SQL statement or statement grouping as defined by using a statement block. Unless a statement block is used, the IF or ELSE condition can affect the performance of only one Transact-SQL statement.

You can use COALESCE, e.g.:

SELECT 
    Stds.FirstName, 
    COALESCE(Addrs.Address, Addrs.AddressTwo) AS Addr
FROM 
    Students AS Stds INNER JOIN Address AS Addrs ON Addrs.StdId = Stds.StdId 

MySQL IF() Function, Example. Return "YES" if the condition is TRUE, or "NO" if the condition is FALSE: SELECT IF(500<1000, "YES", "NO");. Try it Yourself »  In SQL server, To write if then else in SQL select query we can use. SELECT CASE statement (In all versions of SQL server) SELECT IIF logical function (From SQL server 2012 ) We will take an example Employee table which has columns EmpId, EmpName, Experience, Salary, Gender. Now we want to divide employees based upon their experience and salary.

you can use below sql.

SELECT 
    Stds.FirstName, 
    case when Addrs.Address is null then AddressTwo else  Addrs.Address end Address 
FROM
    Students AS Stds 
INNER JOIN 
    Address AS Addrs ON Addrs.StdId = Stds.StdId 
GROUP BY 
    Addrs.FirstName, 
    case when Addrs.Address is null then AddressTwo else  Addrs.Address end 

How to Use IFTHEN Logic in SQL Server, SELECT CASE WHEN books.title = 'The Hobbit' THEN 'Middle-earth' WHEN to notice that this is an extremely simple SELECT statement on the surface:. IF statement or condition in WHERE clause of SELECT statement in sql server. How to use or ass IF statement or condition in WHERE clause of SELECT statement in SQL server. We cannot use IF statement or condition in WHERE clause of the SELECT statement. It is syntactically incorrect. We can achieve our goal without using if condition in WHERE clause.

SQL Server IF ELSE Statement By Examples, Note that if the Boolean expression contains a SELECT statement, you must enclose the SELECT statement in parentheses. The following example first gets the  RE:[sql-server-l] IF condition in SELECT statement Hi All I have a issuein my sql table ,i have a field with datatype datetime ,while inserting with the blank value its taking 1900-01-01 with the time ,i dont want this value to be inserted or if not possible while retriving can i check if value is 1900-01-01 it should return null.

MySQL IF() function, In the following example the MySQL statement returns the third expression 'false' since the first expression is not true. Code: SELECT IF((SELECT  Definition and Usage. The IF () function returns a value if a condition is TRUE, or another value if a condition is FALSE.

IFELSE (Transact-SQL), If the Boolean expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses. { sql_statement|  Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Learn more How do you write an IF ELSE inside a SELECT statement in MSSQL 2008?