pub fn describe_table(
scx: &StatementContext<'_>,
table_name: <Aug as AstInfo>::ItemName,
columns: Vec<Ident>
) -> Result<StatementDesc, PlanError>
pub fn describe_table(
scx: &StatementContext<'_>,
table_name: <Aug as AstInfo>::ItemName,
columns: Vec<Ident>
) -> Result<StatementDesc, PlanError>