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List all CHECK constraints in your database

Antonios Chatzipavlis

Wednesday 18 November 2015

Συνεχίζουμε με τα χρήσιμα metadata queries και σε αυτό θα δούμε ακόμα ένα με το οποίο μπορούμε να πάρουμε μια συγκεντρωτική εικόνα όλων των check constraints που έχω στην database μου.

Αυτό μπορεί να χρησιμοποιηθεί σε όλες τις εκδόσεις καθώς χρησιμοποιεί τα information_schema views που είναι ίδια σε όλες.

select
        ccu.TABLE_SCHEMA as [shema_name]
,        ccu.TABLE_SCHEMA as [table_schema]
,        ccu.COLUMN_NAME as [column_name]
,        cc.CONSTRAINT_NAME as [constraint_name]
,        cc.CHECK_CLAUSE as [check_caluse]
from INFORMATION_SCHEMA.CHECK_CONSTRAINTS as cc
inner join INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE as ccu
    on cc.CONSTRAINT_SCHEMA = ccu.CONSTRAINT_SCHEMA and cc.CONSTRAINT_NAME=ccu.CONSTRAINT_NAME
order by 1,2,3

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.