SQL Server IF EXISTS THEN 1 ELSE 2 - Stack Overflow
Using "SELECT *" vs "SELECT 1" or "SELECT 0" with EXISTS has no cost difference in SQL Server. More a matter of preference.
SQL Exists Explained: A Comprehensive Guide - SQL Server Tips
Oct 3, 2025 · Learn how to use the SQL EXISTS Boolean logic in IF statements, WHILE Loops and WHERE clauses with real world examples.
EXISTS (Transact-SQL) - SQL Server | Microsoft Learn
Jun 6, 2025 · Returns TRUE if a subquery contains any rows. The code samples in this article use the AdventureWorks2022 or AdventureWorksDW2022 sample database, which you can …
Overview of the T-SQL If Exists statement in a SQL Server …
This article walks through different versions of T-SQL IF EXISTS statement for SQL database using various examples
SQL IF EXISTS Decision Structure: Explained with Examples
Mar 21, 2022 · The SQL IF EXISTS tool is great to know for managing the flow of control of your SQL code. In this very brief tutorial, we’ll discuss everything you need to know about the IF …
When to use EXISTS and NOT EXISTS in SQL? SQL Server Example
Aug 26, 2024 · If you don't know, EXISTS is a logical operator in SQL that is used to check if rows in a database exist. If the subquery produces one or more records, it returns TRUE. The NOT …
SQL Server EXISTS
The EXISTS operator is a logical operator that allows you to check whether a subquery returns any row. The EXISTS operator returns TRUE if the subquery returns one or more rows. The …
SQL EXISTS Operator - W3Schools
The EXISTS operator is used to test for the existence of any record in a subquery. The EXISTS operator returns TRUE if the subquery returns one or more records. Below is a selection from …
How to Update If Row Exists Else Insert in SQL Server
Jul 23, 2025 · To update data, the data needs to be checked in the specific table if the data already exists. If the data already exists then it will be updated. If the data does not exist, then …
SQL Server: EXISTS Condition - TechOnTheNet
This SQL Server tutorial explains how to use the EXISTS condition in SQL Server (Transact-SQL) with syntax and examples. It is used in combination with a subquery and is considered to be …