When using teiid-hibernate-dialect-7.1.1.GA, the TeiidDialect does not include a function to get the month value of a date object. It includes functions to get other date attributes (year, dayofmonth etc). Without a defined function, attempting to get a month value falls back on the hibernate-core function which attempts to utilize an extract method which is not supported in 7.1.1.

Example Query: select d from Data d where month(d.date)='09'

HQL Generated:

select
data0_.Id as Id25_,
data0_.DataAmt as DataAmt25_,
data0_.Data as Data25_,
from
Data data0_
where
extract(month
from
data0_.date)='09'

Being able to obtain a month value from a date is a critical requirement.