From d3f75549598f14c93496eec3b3e61f8a728b7a4d Mon Sep 17 00:00:00 2001
From: jackwener <jakevingoo@gmail.com>
Date: Sat, 26 Nov 2022 21:33:55 +0800
Subject: [PATCH] add doc for `with_alias`

---
 datafusion/expr/src/logical_plan/builder.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/datafusion/expr/src/logical_plan/builder.rs b/datafusion/expr/src/logical_plan/builder.rs
index af9f66ca98c2..71097f5a61c6 100644
--- a/datafusion/expr/src/logical_plan/builder.rs
+++ b/datafusion/expr/src/logical_plan/builder.rs
@@ -989,6 +989,7 @@ pub fn project_with_alias(
     }
 }
 
+/// Create a SubqueryAlias to wrap a LogicalPlan.
 pub fn with_alias(plan: LogicalPlan, alias: String) -> LogicalPlan {
     let plan_schema = &**plan.schema();
     let schema = (plan_schema.clone()).replace_qualifier(alias.as_str());