dharanad commented on code in PR #11780:
URL: https://github.com/apache/datafusion/pull/11780#discussion_r1702164075
##########
datafusion/sql/src/expr/mod.rs:
##########
@@ -714,6 +717,37 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
not_impl_err!("Unsupported dictionary literal: {raw_expr:?}")
}
+ fn try_plan_map_literal(
+ &self,
+ entries: Vec<MapEntry>,
+ schema: &DFSchema,
+ planner_context: &mut PlannerContext,
+ ) -> Result<Expr> {
+ let mut exprs = vec![];
+ entries.into_iter().try_for_each(|entry| {
+ exprs.push(self.sql_expr_to_logical_expr(
+ *entry.key,
+ schema,
+ planner_context,
+ )?);
+ exprs.push(self.sql_expr_to_logical_expr(
+ *entry.value,
+ schema,
+ planner_context,
+ )?);
+ Ok::<_, DataFusionError>(())
+ })?;
Review Comment:
Like i mentioned that was just pseudo code (i should have called it a rough
idea). I was try to suggest something like this
```rust
let arr = (1..10).step_by(2).into_iter().flat_map(|e|
vec![e,e+1]).collect::<Vec<_>>();
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
```
If we can do something like this the expressions iter can be rearrage to
`[k1, v1, k2, v2, ... ]`
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