I am trying to find a compliance confirmation for MS SQL 2016 - if it is fully compliant with ANSI SQL-92 starndard.

I found this article on Microsoft Docs which states it is not, but it refers to ODBC driver and Microsoft Jet engine - not sure if this is exactly the same thing, shouldn't it also relate to T-SQL?

I don't believe that any version of any database platform on earth is fully compliant with any version of the standard. This is probably why you're not finding any claims of 100% compliance...

You can find some promising starting points over on Stack Overflow in the following Q & A: Database Engines and ANSI SQL Compliance

Many references linked from there are not maintained because database platforms are evolving all the time and this would be many full-time jobs to stay on top of it all. Basically:

• no database platform is 100% compliant, but several come close


• platforms have proprietary additions on top of the standard, so your definition of "fully compliant" may vary from someone else's

No (with examples)

From like the very first page,

<concatenation operator> is an operator, ||, that returns the character string made by joining its character string operands in the order given.

SQL Server uses +.

And as far as I know that's SQL 86.

See also

• INTERVAL types and SQL Server


• 
  CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER
  


• hex and bit string literals


• TABLE


• CORRESPONDING BY


• 
  TIMESTAMP WITH TIME ZONE, TIMESTAMP WITH OUT TIME ZONE
  


• 
  DATE and TIME literals


• DOMAINS


• 
  <set column default clause> not there, but instead this thing
  


• <position expression>