SessionState::sql_to_expr does not report unconsumed input #16810
Description
Describe the bug
When the SQL string passed to SessionState::sql_to_expr contains trailing tokens this is silently ignored. This can lead to rather unexpected results. It would be better to report this situation as an error.
To Reproduce
Parse 1234 as foo.bar. This results in an expression with the alias foo. The unprocessed input .bar is silently ignored instead of producing a parse error.
Expected behavior
A parse error is reported when the SQL expression string contains unused content.
Additional context
No response