From d2c76df89feac8e82d8c59ca422308adec6d4eca Mon Sep 17 00:00:00 2001
From: cetra3 <cetra3@hotmail.com>
Date: Thu, 20 Feb 2025 11:30:19 +1030
Subject: [PATCH] Add support for `Dictionary` to AST datatype

---
 datafusion/sql/src/unparser/expr.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/datafusion/sql/src/unparser/expr.rs b/datafusion/sql/src/unparser/expr.rs
index 7c56969d47cd..87f78d661f51 100644
--- a/datafusion/sql/src/unparser/expr.rs
+++ b/datafusion/sql/src/unparser/expr.rs
@@ -1624,9 +1624,7 @@ impl Unparser<'_> {
             DataType::Union(_, _) => {
                 not_impl_err!("Unsupported DataType: conversion: {data_type:?}")
             }
-            DataType::Dictionary(_, _) => {
-                not_impl_err!("Unsupported DataType: conversion: {data_type:?}")
-            }
+            DataType::Dictionary(_, val) => self.arrow_dtype_to_ast_dtype(val),
             DataType::Decimal128(precision, scale)
             | DataType::Decimal256(precision, scale) => {
                 let mut new_precision = *precision as u64;