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List all IDENTITY Columns in your database

Antonios Chatzipavlis
Monday 16 November 2015

Συνεχίζοντας από το τελευταίο μου άρθρο σήμερα θα σας παρουσιάσω ακόμα ένα metadata query με το οποίο θα μπορώ να γνωρίζω τα tables που έχουν IDENTITY column, το data type που έχουν αυτές οι columns όπως επίσης από που ξεκινάνε (seed) πως μεγαλώνει η τιμή του (increment) και ποια είναι η τρέχουσα τιμή του.

Το παρακάτω metadata query μπορείτε να καταναλώστε ελεύθερα σε όλες τις εκδόσεις του SQL Server καθώς έχω φροντίσει να χρησιμοποιήσω τα information_schema views και όχι τα system views που στο πέρασμα των εκδόσεων έχουν μικρές ή μεγάλες αλλαγές.

Φυσικά αν κάποιος θέλει περισσότερες πληροφορίες μπορεί να χρησιμοποιήσει απευθείας τα system views αλλά ίσως να αυτό που θα φτιάξει σε μια έκδοση να μην δουλεύει σε επόμενη ή προηγούμενη έκδοση.
select 
        TABLE_SCHEMA
,        TABLE_NAME
,        COLUMN_NAME
,        DATA_TYPE
,        IDENT_SEED(TABLE_SCHEMA+'.'+TABLE_NAME) AS SEED_VALUE              
,        IDENT_INCR(TABLE_SCHEMA+'.'+TABLE_NAME) AS INCR_VALUE                  
,        IDENT_CURRENT(TABLE_SCHEMA+'.'+TABLE_NAME) AS CURRENT_VALUE
from INFORMATION_SCHEMA.COLUMNS 
where COLUMNPROPERTY(object_id(TABLE_SCHEMA+'.'+TABLE_NAME),COLUMN_NAME,'IsIdentity')  = 1
ORDER BY 1,2
results

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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