Convert string to datetime sql3/27/2023 ![]() She primarily focuses on the database domain, helping clients build short and long term multi-channel campaigns to drive leads for their sales pipeline. Nupur Dave is a social media enthusiast and an independent consultant. If you need help with any SQL Server Performance Tuning Issues, please feel free to reach out at is also a CrossFit Level 1 Trainer (CF-L1) and CrossFit Level 2 Trainer (CF-L2). Pinal is an experienced and dedicated professional with a deep commitment to flawless customer service. 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. Pinal has authored 13 SQL Server database books and 45 Pluralsight courses. He holds a Masters of Science degree and numerous database certifications. Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 17 years of hands-on experience. Multiple Backup Copies Stripped – SQL in Sixty Seconds #156.Wait Stats for Performance – SQL in Sixty Seconds #157.Case-Sensitive Search – SQL in Sixty Seconds #158.Find Expensive Queries – SQL in Sixty Seconds #159.Bitwise Puzzle – SQL in Sixty Seconds 160.Here are my few recent videos and I would like to know what is your feedback about them. I will write more blogs as well as create an SQL in Sixty Seconds video. Let me know if you are interested to know more about this topic. Now instead of using the CASE statement we can just the above query and get our result as NULL. Here is a much simpler way to do the same: DECLARE VARCHAR(4) = as DATE) This was very exhaustive and negatively impacting the performance. This determines the format that the date is returned. I used CONVERT () because this function allows us to add an argument to specify the style of the resulting date. Their existing code was actually using a case expression to convert the 1900 date to a NULL value. Where the first parameter is the string that needs to be converted, the second parameter is the format of the date to be produced and the third is a null. SELECT CONVERT ( nvarchar, CAST ( CAST ( 20281030 AS char (8)) AS date), 101 ) Result: Here I added the CONVERT () function to do another conversion. When you run the script above you will get a return the date and time in the year 1900. Recently, the client showed me the following code where when they try to convert the empty string to date time, it was automatically converted to year date. While I focus on SQL Server Performance Tuning Comprehensive Database Performance Health Check, at the end of the consultancy, I like to answer any question my client has on SQL Server. Let us learn today how to CONVERT Empty String To Null DateTime. ![]()
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