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1. Import csv file into powershell how to#
2. Import csv file into powershell zip file#
3. Import csv file into powershell update#

The script then deletes the temporary table to be a good citizen. To solve this, I switched the script to create a “temporary table” in TempDB, insert the CSV data, then SQL MERGE between the source and target tables to combine the data. I tried with 50,000 rows and gave up after an hour of it running.

Import csv file into powershell update#

This worked great for INSERT, but the UPDATE proved unscalable. My first version of this script queried the existing DB table, then performed a ForEach CSV row action in PowerShell which then did an UPDATE or an INSERT depending on whether the row already existed based on a matching ID. Here is what you should see after a successful first run on the example script: This way you’ve established a working baseline which you can always go back to if you’re not sure on what did or didn’t work. I recommend starting with the example data provided, then once you’ve mastered this take the Import.ps1 example and customize it to your exact use case.

Import csv file into powershell how to#

– Edit the $SQLInstance variable to match the above, then run the script to see how to import a CSVīoth scripts were tested using PowerShell 5.1 on Windows 10 with SQL Express 2017. – Edit the $SQLInstance variable to a valid SQL instance and run the script to create a sample DB – A CSV file containing 50,000 rows of sample data for you to test the process

Import csv file into powershell zip file#

Start by downloading my example scripts from the link below:Įxtract the zip file to C:\ImportingCSVsIntoSQLv1\. So, how do you get data from a CSV into your Microsoft SQL Database and cope with both UPDATE and INSERT in a scalable way? This is exactly what this blog post in my series on using PowerShell and Microsoft SQL is going to help you do! To this end being able to extract data from a CSV is a very useful skill to have in your toolkit. By storing tabular data in plain text with a comma as a field separator, it is a universal file format used by many. Rather, they needed to also UPDATE existing records based on a matching ID if the CSV data already existed in the database.Ī comma-separated value file (CSV) is one of the most common methods of transporting data between computing systems. They had tried a few different methods on their own, but their problem was that it wasn’t just a simple INSERT of the data required. I was recently asked by a US Hospital network to help with importing externally sourced data from a CSV file into a Microsoft SQL database using PowerShell.