Stairway to T-SQL DML Level 12: Using the MERGE Statement: How many times have you built logic in your code that first checks for the existence of a row, then based on the outcome of that existence check you either perform an INSERT statement (if the row doesn’t exist), or an UPDATE statement (if the row already exists)? With the release of SQL Server 2008 Microsoft introduced the MERGE statement to make that task a lot easier. In this article I’ll be discussing how to perform insert, update…

The final level of this stairway looks at the MERGE statement in detail, focusing on how to perform insert, update and delete logic using the MERGE statement.

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SQL - If temp table exists then drop

If temp table exists then drop

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NOT IN vs. NOT EXISTS vs. OUTER APPLY vs. OUTER JOIN

Aaron Bertrand ( lists out the changes to In-Memory OLTP ("Hekaton") that will make the feature even more appealing in SQL Server

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WordPress Plugin Fixes SQL Injection Flaw That Let Attackers Dump Site Passwords

Sql Server: Check If Column Exists In Table

Tips and tricks to check if column exists in a SQL Server database table. Also find the list of all tables and stored procedures having the column name.

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SQL - Select columnValue if the column exists otherwise null - use EXISTS to check INFORMATION_SCHEMA

I'm wondering if I can select the value of a column if the column exists and just select null otherwise. In other words I'd like to "lift" the select statement to handle the case when the column d.

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SQL SERVER - Select Unique Data From a Column Exist in Two Different Table - SQL Authority with Pinal Dave

SQL SERVER - Select Unique Data From a Column Exist in Two Different Table - SQL Authority with Pinal Dave

Tip of the Day - New Drop If Exists Syntax in SQL Server 2016

When writing T-SQL code, we often write code to check if the database object exists first and then take some action. In this tip I cover the new and easier way to do this in SQL Server

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