From 65114c64c4f61a7baf20a3a154c61f9d10bb86fd Mon Sep 17 00:00:00 2001
From: t8y2 <1156263951@qq.com>
Date: Tue, 16 Jun 2026 20:30:21 +0800
Subject: [PATCH] fix(sqlite): support .db3 file extension

---
 apps/desktop/src/App.vue                                   | 2 +-
 .../desktop/src/components/connection/ConnectionDialog.vue | 4 ++--
 apps/desktop/src/composables/useFileDrop.ts                | 2 +-
 src-tauri/src/commands/external_db.rs                      | 7 ++++---
 4 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/apps/desktop/src/App.vue b/apps/desktop/src/App.vue
index 008662326b..8cc6323d9f 100644
--- a/apps/desktop/src/App.vue
+++ b/apps/desktop/src/App.vue
@@ -592,7 +592,7 @@ async function openPendingSqlFiles() {
   }
 }
 
-const DB_EXTENSIONS = [".db", ".sqlite", ".sqlite3", ".duckdb"];
+const DB_EXTENSIONS = [".db", ".db3", ".sqlite", ".sqlite3", ".duckdb"];
 
 function getDbTypeFromPath(path: string): "sqlite" | "duckdb" | null {
   const lower = path.toLowerCase();
diff --git a/apps/desktop/src/components/connection/ConnectionDialog.vue b/apps/desktop/src/components/connection/ConnectionDialog.vue
index e2939582da..9a7234c9dc 100644
--- a/apps/desktop/src/components/connection/ConnectionDialog.vue
+++ b/apps/desktop/src/components/connection/ConnectionDialog.vue
@@ -2001,7 +2001,7 @@ async function createDuckDbFilePath() {
 }
 
 function ensureSqliteFileExtension(path: string): string {
-  return /\.(db|sqlite|sqlite3)$/i.test(path) ? path : `${path}.db`;
+  return /\.(db|db3|sqlite|sqlite3)$/i.test(path) ? path : `${path}.db`;
 }
 
 async function createSqliteFilePath() {
@@ -2010,7 +2010,7 @@ async function createSqliteFilePath() {
   const selected = await save({
     title: t("connection.createSqliteFile"),
     defaultPath: "database.db",
-    filters: [{ name: "SQLite", extensions: ["db", "sqlite", "sqlite3"] }],
+    filters: [{ name: "SQLite", extensions: ["db", "db3", "sqlite", "sqlite3"] }],
   });
   if (!selected) return;
 
diff --git a/apps/desktop/src/composables/useFileDrop.ts b/apps/desktop/src/composables/useFileDrop.ts
index 3765d25898..77d9ab73e0 100644
--- a/apps/desktop/src/composables/useFileDrop.ts
+++ b/apps/desktop/src/composables/useFileDrop.ts
@@ -7,7 +7,7 @@ import { useToast } from "@/composables/useToast";
 import * as api from "@/lib/api";
 import type { ConnectionConfig } from "@/types/database";
 
-const DB_EXTENSIONS = [".db", ".sqlite", ".sqlite3", ".duckdb"];
+const DB_EXTENSIONS = [".db", ".db3", ".sqlite", ".sqlite3", ".duckdb"];
 
 function getDbType(path: string): "sqlite" | "duckdb" | null {
   const lower = path.toLowerCase();
diff --git a/src-tauri/src/commands/external_db.rs b/src-tauri/src/commands/external_db.rs
index 8808b61212..ca5b65080e 100644
--- a/src-tauri/src/commands/external_db.rs
+++ b/src-tauri/src/commands/external_db.rs
@@ -1,7 +1,7 @@
 use std::path::{Path, PathBuf};
 use std::sync::Mutex;
 
-const DB_EXTENSIONS: &[&str] = &["db", "sqlite", "sqlite3", "duckdb"];
+const DB_EXTENSIONS: &[&str] = &["db", "db3", "sqlite", "sqlite3", "duckdb"];
 
 #[derive(Default)]
 pub struct ExternalDbOpenState {
@@ -77,11 +77,11 @@ mod tests {
     #[test]
     fn filters_db_file_args_case_insensitively() {
         let paths = db_file_paths_from_args(
-            ["/tmp/a.db", "--flag", "/tmp/b.SQLITE", "/tmp/c.sqlite3", "/tmp/d.duckdb", "/tmp/e.txt"],
+            ["/tmp/a.db", "--flag", "/tmp/b.SQLITE", "/tmp/c.sqlite3", "/tmp/d.duckdb", "/tmp/e.db3", "/tmp/f.txt"],
             Path::new("/work"),
         );
 
-        assert_eq!(paths, vec!["/tmp/a.db", "/tmp/b.SQLITE", "/tmp/c.sqlite3", "/tmp/d.duckdb"]);
+        assert_eq!(paths, vec!["/tmp/a.db", "/tmp/b.SQLITE", "/tmp/c.sqlite3", "/tmp/d.duckdb", "/tmp/e.db3"]);
     }
 
     #[test]
@@ -103,6 +103,7 @@ mod tests {
     #[test]
     fn is_db_file_path_recognizes_extensions() {
         assert!(is_db_file_path(Path::new("test.db")));
+        assert!(is_db_file_path(Path::new("test.db3")));
         assert!(is_db_file_path(Path::new("test.sqlite")));
         assert!(is_db_file_path(Path::new("test.sqlite3")));
         assert!(is_db_file_path(Path::new("test.duckdb")));