From 343acd39ff34ddd62c859f4e8b71d4b6b1213528 Mon Sep 17 00:00:00 2001
From: osipovartem <artemosipov.dev@gmail.com>
Date: Wed, 15 Jan 2025 11:35:08 +0300
Subject: [PATCH 1/3] Extend references with new SHowSchemas type

---
 datafusion/core/src/catalog_common/mod.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/datafusion/core/src/catalog_common/mod.rs b/datafusion/core/src/catalog_common/mod.rs
index 68c78dda4899..9827f259bd13 100644
--- a/datafusion/core/src/catalog_common/mod.rs
+++ b/datafusion/core/src/catalog_common/mod.rs
@@ -156,6 +156,8 @@ pub fn resolve_table_references(
                     | Statement::ShowColumns { .. }
                     | Statement::ShowTables { .. }
                     | Statement::ShowCollation { .. }
+                    | Statement::ShowSchemas { .. }
+                    | Statement::ShowDatabases { .. }
             );
             if requires_information_schema {
                 for s in INFORMATION_SCHEMA_TABLES {

From ced699941cd3c3967c2446df2b9c8c50aec33294 Mon Sep 17 00:00:00 2001
From: osipovartem <artemosipov.dev@gmail.com>
Date: Wed, 15 Jan 2025 11:41:22 +0300
Subject: [PATCH 2/3] Make resolve_table_ref as pub

---
 datafusion/core/src/execution/session_state.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/datafusion/core/src/execution/session_state.rs b/datafusion/core/src/execution/session_state.rs
index c5874deb6ed5..f7e964210005 100644
--- a/datafusion/core/src/execution/session_state.rs
+++ b/datafusion/core/src/execution/session_state.rs
@@ -285,7 +285,7 @@ impl SessionState {
             .build()
     }
 
-    pub(crate) fn resolve_table_ref(
+    pub fn resolve_table_ref(
         &self,
         table_ref: impl Into<TableReference>,
     ) -> ResolvedTableReference {

From 9ab7d5803f86ac40db95698b671a18e88c6e85f6 Mon Sep 17 00:00:00 2001
From: osipovartem <artemosipov.dev@gmail.com>
Date: Wed, 15 Jan 2025 11:54:56 +0300
Subject: [PATCH 3/3] Fix docs linter

---
 datafusion/core/src/execution/session_state.rs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/datafusion/core/src/execution/session_state.rs b/datafusion/core/src/execution/session_state.rs
index f7e964210005..19d0fae207be 100644
--- a/datafusion/core/src/execution/session_state.rs
+++ b/datafusion/core/src/execution/session_state.rs
@@ -285,6 +285,8 @@ impl SessionState {
             .build()
     }
 
+    /// Resolves a [`TableReference`] to a [`ResolvedTableReference`]
+    /// using the default catalog and schema.
     pub fn resolve_table_ref(
         &self,
         table_ref: impl Into<TableReference>,
@@ -845,9 +847,9 @@ impl SessionState {
         overwrite: bool,
     ) -> Result<(), DataFusionError> {
         let ext = file_format.get_ext().to_lowercase();
-        match (self.file_formats.entry(ext.clone()), overwrite){
-            (Entry::Vacant(e), _) => {e.insert(file_format);},
-            (Entry::Occupied(mut e), true)  => {e.insert(file_format);},
+        match (self.file_formats.entry(ext.clone()), overwrite) {
+            (Entry::Vacant(e), _) => { e.insert(file_format); }
+            (Entry::Occupied(mut e), true) => { e.insert(file_format); }
             (Entry::Occupied(_), false) => return config_err!("File type already registered for extension {ext}. Set overwrite to true to replace this extension."),
         };
         Ok(())