Looking at this again, I wonder if `Dialect.supportsValuesList()` would 
be the right check. A lot of dialects return false for this (except 
CockroachDB, DB2, PostgreSQL and SQL Server), but - I assume - they 
don't fail this test.
I guess those dialects support the values list in insert, but not elsewhere.
I will split the specific test into two tests, and explicitly ignore it 
for Firebird. I first considered adding a dialect feature check, but as 
supportsValuesList() doesn't seem to be the right thing to check, I 
guess it is better to only exclude known failing dialects.
Mark
On 07-03-2021 16:29, Mark Rotteveel wrote:
 Testing against Firebird, it seems like Dialect.supportsValuesList()
is 
 ignored.
 
 Specifically the test 
 org.hibernate.orm.test.query.hql.InsertUpdateTests.testInsertValues 
 generates the following statement even with Dialect.supportsValuesList() 
 return false:
 
 ```
      insert
      into
          Ticket
          (id, ticket_key, subject, details)
      values
          (2, 'XYZ123', 'Outage', 'Something is broken'),  (
              13, 'HIJ456', 'x', 'x'
          )
 ```
 
 Or is this a situation where this is ignored because the HQL explicitly 
 contains two lists? 
-- 
Mark Rotteveel