This is related to https://issues.apache.org/jira/browse/CALCITE-5987
Casts for NULLs are meaningful, they should not be removed in general.
Mihai
From: Guillaume Masse
Sent: Tuesday, July 8, 2025 10:06 AM
To: dev@calcite.apache.org
Subject: unparse for NULL
Hi,
I'm having issues unparsing `NULL` with a certain type T.
My goal is to have: `CAST(NULL AS T)` when I unparse my RexNode.
If I create a null literal with: `rexBuilder.makeNullLiteral(myTypeT)`,
`RelToSqlConverter` will simply drop the type and render NULL.
If I explicitly create a cast nul
