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EXECUTE (EXEC) vs. sp_executesql

Antonios Chatzipavlis
Tuesday 02 February 2021

Παρατηρώ ότι αρκετοί προβληματίζονται ή έχουν μπερδευτεί για το πότε πρέπει να χρησιμοποιούν την EXECUTE (περισσότερο γνωστή με την σύντμηση της EXEC) ή την sp_executesql.

Λοιπόν για να βάλουμε τα πράγματα σε σειρά.


Η EXEC χρησιμοποιείται για να εκτελέσουμε stored procedures.

Μπορούμε να την χρησιμοποιήσουμε και για την εκτέλεση dynamic queries αλλά αυτά (πλην ελαχίστων εξαιρέσεων) είναι sql injected vulnerable.


H sp_executesql είναι system stored procedure που έχει δημιουργηθεί για την εκτέλεση dynamic queries και επειδή έχει την δυνατότητα να υποστηρίζει parameterized queries μέσα από την χρήση των parameters που έχει δεν είναι sql injected vulnerable.

Επίσης όταν εκτελούμε ένα dynamic query με την sp_executesql γίνεται επαναχρησιμοποίηση του execution plan άρα έχω καλύτερο performance.

End of story.

//Antonios Chatzipavlis

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.


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