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How to check my queries if they are ANSI compatible? (Tip of the day)

Antonios Chatzipavlis
Friday 13 January 2012

Αρκετές φορές έχω ερωτηθεί και έχω πει την άποψη μου για το τι είναι ANSI Transact SQL και τι όχι, όπως επίσης έχω πει και το πόσο ο SQL Server έχει δώσει βάρος στο να είναι κοντά στο ANSI.

Όπως και να έχει όμως είτε θέλω να γράφω pure ANSI επειδή ενδεχομένως να θέλω portability είτε γιατί απλά είμαι περίεργος και θέλω να ξέρω αυτό που γράφω πόσο ANSI είναι , μπορώ το κάνω απλά χρησιμοποιώντας την SET FIPS_FLAGGER <level> πριν από την εκτέλεση του/των query(s) που θέλω να ελέγξω.

Στην παράμετρο level ορίζω την «αυστηρότητα» του ελέγχου μου. Οι τιμές που η παράμετρος μπορεί να δεχθεί είναι

Value Description
ENTRY Standards checking for ISO entry-level compliance.
FULL Standards checking for ISO full compliance.
INTERMEDIATE Standards checking for ISO intermediate-level compliance.
OFF No standards checking.

Έτσι αν για παράδειγμα θέλω να ελέγξω αν το

  1. select top(5) * from sys.databases
  2. go

είναι 100% ANSI Compatible τότε εκτελώ.

  1. set fips_flagger 'full'
  2. go
  3.  
  4. select top(5) * from sys.databases
  5. go

Το οποίο θα μου δώσεις τα παρακάτω messages

  1. FIPS Warning: Line 1 has the non-ANSI statement 'SET'.
  2. FIPS Warning: Line 2 has the non-ANSI clause 'TOP'.

Antonios Chatzipavlis

Antonios Chatzipavlis

Antonios Chatzipavlis is a highly experienced Data Solutions Consultant and Trainer. He has been working in the IT industry since 1988, holding various roles such as senior developer, IT Manager, Data & AI Solutions Architect and Consultant.

Since 1995, Antonios has focused on modern technologies and software development tools, primarily by Microsoft. He has specialized in Data & AI since 2000, with expertise in Microsoft Data Platform (SQL Server, Azure SQL Databases, Azure Synapse Analytics, Microsoft Fabric, Power BI, AI) and Databricks.

Antonios is also a Microsoft Certified Trainer (MCT) for over 25 years, has been recognized as a Microsoft Most Valuable Professional (MVP) in Data Platform since 2010 and he is in the Data Expert 40 Powerlist 2024 by Boussias. He is the co-founder and visionary behind XLYTiCA, a company dedicated to Data & AI solutions.

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