sqlschool.gr logo


Articles of SQLschool.gr Team

Get random rows from a table in SQL Server

Antonios Chatzipavlis
Monday 13 September 2021

Υπάρχουν περιπτώσεις που θέλουμε από ένα πίνακα να πάρουμε τυχαία κάποιες εγγραφές για να υλοποιήσουμε κάποια σενάρια ανάλυσης. Υπάρχουν κάποιες functions όπως η RAND αλλά δεν καλύπτει πάντα σωστά την ανάγκη αυτή. Ο ασφαλέστερος τρόπος που έχω βρει μέχρι τώρα καθώς κάθε φορά επιστρέφει διαφορετικό αποτέλεσμα είναι να εκτελέσουμε ένα query όπως παρακάτω στο πίνακα που μας ενδιαφέρει.

select top(10) * from schema.table order by NEWID();

Antonios Chatzipavlis

Antonios Chatzipavlis

Antonios is a Data Solutions Consultant and Trainer. He has been working in IT since 1988. In his career, he has worked as senior developer, IT Manager, Solutions Architect and IT Consultant. Since 1995 he has been devoted on new technologies and software development tools, mainly by Microsoft, either by training company staff and colleagues or assisting them in design, development and implementation as a consultant or chief developer. He has focused in Databases and Data Science since 1995. He specialized in Microsoft SQL Server since version 6.0 in areas like SQL Server Internals, Database Design and Development, Business Intelligence and in 2010 he has started working with Azure Data Platform, NoSQL databases, Big Data Technologies and Machine Learning. He is an active member of many IT communities in Greece, answering colleagues' questions and writing articles in his web site. He is the owner of SQLschool.gr which is a community portal with a lot of information about Microsoft SQL Server. He has been a Microsoft Certified Trainer (MCT) since 2000. Microsoft honored him as MVP on Data Platform due to his activities in SQL Server since 2010. He holds a large number of Microsoft Certifications and Microsoft SQL Server Certifications since version 6.5.

Relative Articles


What's New in SQL Server 2022 - Episodes

More Tips...

Become a member

If you want to receive updates from us become a member to our community.




sqlschool.gr © 2010-2024 All rights reserved

This site uses cookies for operational and analytics purposes only. By continuing to browse this site, you agree to their use.