[sql] SQL Server IF EXISTS THEN 1 ELSE 2

Using Sql Server 2012. I have a stored procedure and part of it checks if a username is in a table. If it is, return a 1, if not, return a 2. This is my code:

IF EXISTS (SELECT * FROM tblGLUserAccess WHERE GLUserName ='xxxxxxxx') 1 else 2

However, I keep receiving the below error:

Incorrect syntax near '1'.

Is this even possible with an IF EXIST?

Regards,

Michael

The answer is


If you want to do it this way then this is the syntax you're after;

IF EXISTS (SELECT * FROM tblGLUserAccess WHERE GLUserName ='xxxxxxxx') 
BEGIN
   SELECT 1 
END
ELSE
BEGIN
    SELECT 2
END

You don't strictly need the BEGIN..END statements but it's probably best to get into that habit from the beginning.


Its best practice to have TOP 1 1 always.

What if I use SELECT 1 -> If condition matches more than one record then your query will fetch all the columns records and returns 1.

What if I use SELECT TOP 1 1 -> If condition matches more than one record also, it will just fetch the existence of any row (with a self 1-valued column) and returns 1.

IF EXISTS (SELECT TOP 1 1 FROM tblGLUserAccess WHERE GLUserName ='xxxxxxxx') 
BEGIN
   SELECT 1 
END
ELSE
BEGIN
    SELECT 2
END

In SQL without SELECT you cannot result anything. Instead of IF-ELSE block I prefer to use CASE statement for this

SELECT CASE
         WHEN EXISTS (SELECT 1
                      FROM   tblGLUserAccess
                      WHERE  GLUserName = 'xxxxxxxx') THEN 1
         ELSE 2
       END 

How about using IIF?

SELECT IIF (EXISTS (SELECT 1 FROM tblGLUserAccess WHERE GLUserName ='xxxxxxxx'), 1, 2)

Also, if using EXISTS to check the the existence of rows, don't use *, just use 1. I believe it has the least cost.


What the output that you need, select or print or .. so on.

so use the following code:

IF EXISTS (SELECT * FROM tblGLUserAccess WHERE GLUserName ='xxxxxxxx') select 1 else select 2

You can define a variable @Result to fill your data in it

DECLARE @Result AS INT

IF EXISTS (SELECT * FROM tblGLUserAccess WHERE GLUserName ='xxxxxxxx') 
SET @Result = 1 
else
SET @Result = 2

Examples related to sql

Passing multiple values for same variable in stored procedure SQL permissions for roles Generic XSLT Search and Replace template Access And/Or exclusions Pyspark: Filter dataframe based on multiple conditions Subtracting 1 day from a timestamp date PYODBC--Data source name not found and no default driver specified select rows in sql with latest date for each ID repeated multiple times ALTER TABLE DROP COLUMN failed because one or more objects access this column Create Local SQL Server database

Examples related to sql-server

Passing multiple values for same variable in stored procedure SQL permissions for roles Count the Number of Tables in a SQL Server Database Visual Studio 2017 does not have Business Intelligence Integration Services/Projects ALTER TABLE DROP COLUMN failed because one or more objects access this column Create Local SQL Server database How to create temp table using Create statement in SQL Server? SQL Query Where Date = Today Minus 7 Days How do I pass a list as a parameter in a stored procedure? SQL Server date format yyyymmdd

Examples related to if-statement

How to use *ngIf else? SQL Server IF EXISTS THEN 1 ELSE 2 What is a good practice to check if an environmental variable exists or not? Using OR operator in a jquery if statement R multiple conditions in if statement Syntax for an If statement using a boolean How to have multiple conditions for one if statement in python Ifelse statement in R with multiple conditions If strings starts with in PowerShell Multiple conditions in an IF statement in Excel VBA

Examples related to stored-procedures

How to create temp table using Create statement in SQL Server? How do I pass a list as a parameter in a stored procedure? SQL Server IF EXISTS THEN 1 ELSE 2 Stored procedure with default parameters Could not find server 'server name' in sys.servers. SQL Server 2014 How to kill all active and inactive oracle sessions for user EXEC sp_executesql with multiple parameters MySQL stored procedure return value SQL Server: use CASE with LIKE SQL server stored procedure return a table

Examples related to sql-server-2012

Count the Number of Tables in a SQL Server Database SQL Server IF EXISTS THEN 1 ELSE 2 Get last 30 day records from today date in SQL Server No process is on the other end of the pipe (SQL Server 2012) How to subtract 30 days from the current date using SQL Server Possible to restore a backup of SQL Server 2014 on SQL Server 2012? SQL Server: Best way to concatenate multiple columns? SQL Server - An expression of non-boolean type specified in a context where a condition is expected, near 'RETURN' SSIS Excel Connection Manager failed to Connect to the Source Sql server - log is full due to ACTIVE_TRANSACTION