houqp commented on a change in pull request #547:
URL: https://github.com/apache/arrow-datafusion/pull/547#discussion_r650551934
##########
File path: datafusion/src/sql/planner.rs
##########
@@ -424,17 +424,24 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
ctes: &mut HashMap<String, LogicalPlan>,
) -> Result<LogicalPlan> {
match relation {
- TableFactor::Table { name, .. } => {
+ TableFactor::Table { name, alias, .. } => {
let table_name = name.to_string();
let cte = ctes.get(&table_name);
match (
cte,
self.schema_provider.get_table_provider(name.try_into()?),
) {
(Some(cte_plan), _) => Ok(cte_plan.clone()),
- (_, Some(provider)) => {
- LogicalPlanBuilder::scan(&table_name, provider,
None)?.build()
- }
+ (_, Some(provider)) => LogicalPlanBuilder::scan(
+ // take alias into account to support `JOIN table1 as
table2`
+ alias
+ .as_ref()
+ .map(|a| a.name.value.as_str())
+ .unwrap_or(&table_name),
+ provider,
+ None,
+ )?
+ .build(),
(_, None) => Err(DataFusionError::Plan(format!(
Review comment:
good catch
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