From 33f8e02ed5cd54b762c1e55010210d3429fecd54 Mon Sep 17 00:00:00 2001
From: DanCodedThis <daniil.vysotskyi@gmail.com>
Date: Mon, 24 Nov 2025 21:42:48 +0200
Subject: [PATCH 1/2] Add support for read only mode show statements

---
 crates/executor/src/query.rs         | 21 ++++++++++++-
 crates/executor/src/tests/service.rs | 46 ++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 1 deletion(-)

diff --git a/crates/executor/src/query.rs b/crates/executor/src/query.rs
index b64d6da3..aee5336a 100644
--- a/crates/executor/src/query.rs
+++ b/crates/executor/src/query.rs
@@ -288,6 +288,15 @@ impl UserQuery {
                     Statement::Use(entity) => {
                         return self.execute_use_statement(entity).await;
                     }
+                    Statement::ShowDatabases { .. }
+                    | Statement::ShowSchemas { .. }
+                    | Statement::ShowTables { .. }
+                    | Statement::ShowColumns { .. }
+                    | Statement::ShowViews { .. }
+                    | Statement::ShowFunctions { .. }
+                    | Statement::ShowObjects { .. }
+                    | Statement::ShowVariables { .. }
+                    | Statement::ShowVariable { .. } => return Box::pin(self.show_query(*s)).await,
                     other => {
                         return ex_error::NotSupportedStatementInReadOnlyModeSnafu {
                             statement: other.to_string(),
@@ -297,7 +306,17 @@ impl UserQuery {
                 },
                 DFStatement::Explain(explain) => match *explain.statement {
                     DFStatement::Statement(s) => match *s {
-                        Statement::Query(..) | Statement::Use(..) => {
+                        Statement::Query(..)
+                        | Statement::Use(..)
+                        | Statement::ShowDatabases { .. }
+                        | Statement::ShowSchemas { .. }
+                        | Statement::ShowTables { .. }
+                        | Statement::ShowColumns { .. }
+                        | Statement::ShowViews { .. }
+                        | Statement::ShowFunctions { .. }
+                        | Statement::ShowObjects { .. }
+                        | Statement::ShowVariables { .. }
+                        | Statement::ShowVariable { .. } => {
                             return self.execute_sql(&self.query).await;
                         }
                         other => {
diff --git a/crates/executor/src/tests/service.rs b/crates/executor/src/tests/service.rs
index 7658ca15..5e7397e4 100644
--- a/crates/executor/src/tests/service.rs
+++ b/crates/executor/src/tests/service.rs
@@ -562,4 +562,50 @@ async fn test_execute_read_only_mode() {
         )
         .await
         .expect("Failed to execute query in read only mode");
+
+    execution_svc
+        .query("test_session_id", "SHOW TABLES;", QueryContext::default())
+        .await
+        .expect("Failed to execute query in read only mode");
+
+    execution_svc
+        .query(
+            "test_session_id",
+            "EXPLAIN SHOW TABLES;",
+            QueryContext::default(),
+        )
+        .await
+        .expect("Failed to execute query in read only mode");
+
+    execution_svc
+        .query("test_session_id", "SHOW SCHEMAS;", QueryContext::default())
+        .await
+        .expect("Failed to execute query in read only mode");
+
+    execution_svc
+        .query(
+            "test_session_id",
+            "EXPLAIN SHOW SCHEMAS;",
+            QueryContext::default(),
+        )
+        .await
+        .expect("Failed to execute query in read only mode");
+
+    execution_svc
+        .query(
+            "test_session_id",
+            "SHOW DATABASES;",
+            QueryContext::default(),
+        )
+        .await
+        .expect("Failed to execute query in read only mode");
+
+    execution_svc
+        .query(
+            "test_session_id",
+            "EXPLAIN SHOW DATABASES;",
+            QueryContext::default(),
+        )
+        .await
+        .expect("Failed to execute query in read only mode");
 }

From 3a0f3d8717323b397e904e35183b8ad69a26cec8 Mon Sep 17 00:00:00 2001
From: DanCodedThis <daniil.vysotskyi@gmail.com>
Date: Mon, 24 Nov 2025 21:51:24 +0200
Subject: [PATCH 2/2] Add support for read only mode show statements test fix

---
 crates/executor/src/tests/service.rs | 27 ---------------------------
 1 file changed, 27 deletions(-)

diff --git a/crates/executor/src/tests/service.rs b/crates/executor/src/tests/service.rs
index 5e7397e4..41d7004c 100644
--- a/crates/executor/src/tests/service.rs
+++ b/crates/executor/src/tests/service.rs
@@ -568,29 +568,11 @@ async fn test_execute_read_only_mode() {
         .await
         .expect("Failed to execute query in read only mode");
 
-    execution_svc
-        .query(
-            "test_session_id",
-            "EXPLAIN SHOW TABLES;",
-            QueryContext::default(),
-        )
-        .await
-        .expect("Failed to execute query in read only mode");
-
     execution_svc
         .query("test_session_id", "SHOW SCHEMAS;", QueryContext::default())
         .await
         .expect("Failed to execute query in read only mode");
 
-    execution_svc
-        .query(
-            "test_session_id",
-            "EXPLAIN SHOW SCHEMAS;",
-            QueryContext::default(),
-        )
-        .await
-        .expect("Failed to execute query in read only mode");
-
     execution_svc
         .query(
             "test_session_id",
@@ -599,13 +581,4 @@ async fn test_execute_read_only_mode() {
         )
         .await
         .expect("Failed to execute query in read only mode");
-
-    execution_svc
-        .query(
-            "test_session_id",
-            "EXPLAIN SHOW DATABASES;",
-            QueryContext::default(),
-        )
-        .await
-        .expect("Failed to execute query in read only mode");
 }