alamb commented on a change in pull request #9600:
URL: https://github.com/apache/arrow/pull/9600#discussion_r584777400
##########
File path: rust/datafusion/src/sql/planner.rs
##########
@@ -927,7 +931,15 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
}
SQLExpr::Function(function) => {
- let name: String = function.name.to_string();
+ let name;
+ let input_name = function.name.to_string();
+
+ let case_sensitive =
self.schema_provider.get_config().case_sensitive;
+ if !case_sensitive {
+ name = input_name.to_lowercase();
+ } else {
+ name = input_name.clone();
+ }
Review comment:
I think the following formulation would be more idiomatic rust (and
save a copy of `input_name`).
```suggestion
let input_name = function.name.to_string();
let case_sensitive =
self.schema_provider.get_config().case_sensitive;
let name = if !case_sensitive {
input_name.to_lowercase();
} else {
input_name;
}
```
##########
File path: rust/datafusion/src/execution/context.rs
##########
@@ -502,6 +502,8 @@ pub struct ExecutionConfig {
pub concurrency: usize,
/// Default batch size when reading data sources
pub batch_size: usize,
+ /// Case sensitive
Review comment:
```suggestion
/// Will function names be searched using case-sensitive matching.
/// If `false` both `"SELECT COUNT(*) FROM t;` and "`SELECT count(*)
FROM t;`
/// can be used to compute the `COUNT` aggregate. If `true` then only
/// `"SELECT count(*) FROM t"` can be used.
/// Defaults to `true`
```
##########
File path: rust/arrow-flight/src/arrow.flight.protocol.rs
##########
@@ -499,8 +499,9 @@ pub mod flight_service_server {
#[async_trait]
pub trait FlightService: Send + Sync + 'static {
#[doc = "Server streaming response type for the Handshake method."]
- type HandshakeStream: Stream<Item = Result<super::HandshakeResponse,
tonic::Status>>
Review comment:
I don't think the changes in this file are needed, are they?
##########
File path: rust/datafusion/src/execution/context.rs
##########
@@ -589,6 +598,10 @@ impl ContextProvider for ExecutionContextState {
fn get_aggregate_meta(&self, name: &str) -> Option<Arc<AggregateUDF>> {
self.aggregate_functions.get(name).cloned()
}
+
+ fn get_config(&self) -> ExecutionConfig {
+ self.config.clone()
+ }
Review comment:
```suggestion
fn config(&self) -> &ExecutionConfig {
self.config
}
```
##########
File path: rust/datafusion/src/sql/planner.rs
##########
@@ -343,7 +346,7 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
}
/// Generate a logic plan from an SQL select
- fn select_to_plan(&self, select: &Select) -> Result<LogicalPlan> {
+ pub fn select_to_plan(&self, select: &Select) -> Result<LogicalPlan> {
Review comment:
Does this need to be made `pub`?
##########
File path: rust/datafusion/src/logical_plan/expr.rs
##########
@@ -160,20 +160,26 @@ pub enum Expr {
},
/// Represents the call of a built-in scalar function with a set of
arguments.
ScalarFunction {
+ /// The input name of the function
+ input_name: String,
Review comment:
Also, I looked through the diff and I couldn't figure out what
`input_name` is actually used for. Is this new field needed?
##########
File path: rust/datafusion/src/sql/planner.rs
##########
@@ -927,7 +931,15 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
}
SQLExpr::Function(function) => {
- let name: String = function.name.to_string();
+ let name;
+ let input_name = function.name.to_string();
+
+ let case_sensitive =
self.schema_provider.get_config().case_sensitive;
+ if !case_sensitive {
+ name = input_name.to_lowercase();
+ } else {
+ name = input_name.clone();
+ }
Review comment:
This logic seems to implement case *IN*sensitive logic. Namely if
`case_sensitive` is true, I would expect `count` != `COUNT` but this PR does
the opposite.
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