SQL SERVER - Check If a Column Exists 2016 Onwards - SQL Authority with Pinal Da...
source link: https://blog.sqlauthority.com/2021/09/03/sql-server-check-if-a-column-exists-2016-onwards/?utm_campaign=sql-server-check-if-a-column-exists-2016-onwards
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.
SQL SERVER – Check If a Column Exists 2016 Onwards
It is totally fine to use the syntax and code which is working fine in our code, particularly if it is supported by your application and server. However, sometimes it is fun to learn new things as well. Let us learn how you can check if a column exists in a table from SQL Server 2016 and onwards.
If you are using any version of SQL Server 2005 and onwards, you can use the following syntax.
IF COL_LENGTH('SchemaName.TableName', 'ColumnName') IS NOT NULLBEGIN-- Column Exists OperationsELSE-- Column NOT Exists OperationsENDIf you are using any version of SQL Server 2016 and onwards, you can use the following syntax.
ALTER TABLE SchemaName.TableName DROP COLUMN IF EXISTS ColumnNameThe same syntax words with views, procedures, constraints and many other SQL Server objects.
With that said use the one which makes use of it, most comfortable to check if a column exists.
Here are my few recent videos and I would like to know what is your feedback about them. Do not forget to subscribe SQL in Sixty Seconds series.
Reference: Pinal Dave (http://blog.SQLAuthority.com)
Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 17 years of hands-on experience. He holds a Masters of Science degree and numerous database certifications.
Pinal has authored 13 SQL Server database books and 40 Pluralsight courses. To freely share his knowledge and help others build their expertise, Pinal has also written more than 5,500 database tech articles on his blog at https://blog.sqlauthority.com.
Pinal is an experienced and dedicated professional with a deep commitment to flawless customer service. If you need help with any SQL Server Performance Tuning Issues, please feel free to reach out at [email protected].
Pinal is also a CrossFit Level 1 Trainer (CF-L1) and CrossFit Level 2 Trainer (CF-L2).
Nupur Dave is a social media enthusiast and an independent consultant. She primarily focuses on the database domain, helping clients build short and long term multi-channel campaigns to drive leads for their sales pipeline.
Exclusive Newsletter
Is your SQL Server running slow and you want to speed it up without sharing server credentials? In my Comprehensive Database Performance Health Check, we can work together remotely and resolve your biggest performance troublemakers in less than 4 hours.
Once you learn my business secrets, you will fix the majority of problems in the future.
Have you ever opened any PowerPoint deck when you face SQL Server Performance Tuning emergencies? SQL Server Performance Tuning Practical Workshop is my MOST popular training with no PowerPoint presentations and 100% practical demonstrations.
Essentially I share my business secrets to optimize SQL Server performance.
Recommend
About Joyk
Aggregate valuable and interesting links.
Joyk means Joy of geeK