Database commands (#5307)

* database commands

* db commands

* filesystem opens sqlite file

* clippy error

* corrected error in ci file

* removes matrix flag from ci

* flax matrix for clippy

* add conditional compile for tests

* add conditional compile for tests

* correct order of command

* correct error msg

* correct typo

crates/nu-command/src/default_context.rs

@@ -23,6 +23,11 @@ pub fn create_default_context(cwd: impl AsRef<Path>) -> EngineState {
         #[cfg(feature = "dataframe")]
         add_dataframe_decls(&mut working_set);
 
+        // Database-related
+        // Adds all related commands to query databases
+        #[cfg(feature = "database")]
+        add_database_decls(&mut working_set);
+
         // Core
         bind_command! {
             Alias,
@@ -361,11 +366,6 @@ pub fn create_default_context(cwd: impl AsRef<Path>) -> EngineState {
             ViewSource,
         };
 
-        // Database-related
-        bind_command! {
-            QueryDb
-        };
-
         // Deprecated
         bind_command! {
             PivotDeprecated,