support spark stored procedure

src/parser.rs

@@ -2383,6 +2383,17 @@ impl Parser {
             "group",
             self.parse_grouped_type_declaration_or_constraints(true)?,
         );
+        if self.get_token(1)?.is("EXTERNAL") {
+            self.next_token()?; // -> EXTERNAL
+            let mut external = self.construct_node(NodeType::KeywordSequence)?;
+            self.next_token()?; // -> SECURITY
+            let mut security = self.construct_node(NodeType::KeywordSequence)?;
+            self.next_token()?; // -> INVOKER
+            let external_security = self.construct_node(NodeType::Keyword)?;
+            security.push_node("next_keyword", external_security);
+            external.push_node("next_keyword", security);
+            create.push_node("external", external);
+        }
         if self.get_token(1)?.is("WITH") {
             self.next_token()?; // -> WITH
             create.push_node("with_connection", self.parse_with_connection_clause()?);

src/parser/tests/tests_ddl.rs

@@ -1803,6 +1803,46 @@ with_connection:
     self: CONNECTION (KeywordWithExpr)
     expr:
       self: connection_ident (Identifier)
+",
+            0,
+        )),
+        Box::new(SuccessTestCase::new(
+            "\
+CREATE PROCEDURE procedure_ident()
+EXTERNAL SECURITY INVOKER
+WITH CONNECTION connection_ident
+LANGUAGE python AS 'code'
+",
+            "\
+self: CREATE (CreateProcedureStatement)
+as:
+  self: AS (KeywordWithExpr)
+  expr:
+    self: 'code' (StringLiteral)
+external:
+  self: EXTERNAL (KeywordSequence)
+  next_keyword:
+    self: SECURITY (KeywordSequence)
+    next_keyword:
+      self: INVOKER (Keyword)
+group:
+  self: ( (GroupedTypeDeclarationOrConstraints)
+  rparen:
+    self: ) (Symbol)
+ident:
+  self: procedure_ident (Identifier)
+language:
+  self: LANGUAGE (KeywordWithExpr)
+  expr:
+    self: python (Identifier)
+what:
+  self: PROCEDURE (Keyword)
+with_connection:
+  self: WITH (KeywordSequence)
+  next_keyword:
+    self: CONNECTION (KeywordWithExpr)
+    expr:
+      self: connection_ident (Identifier)
 ",
             0,
         )),

src/types.rs

@@ -610,6 +610,7 @@ export type CreateProcedureStatement = XXXStatement & {
     if_not_exists?: NodeVecChild;
     ident: NodeChild;
     group: NodeChild;
+    external?: NodeChild;
     with_connection?: NodeChild;
     options?: NodeChild;
     language?: NodeChild;