perf: deduplicate queries (#2698)

* deduplicate queries

Deduplicate queries in the UserInputAst after parsing queries

* add return type

src/query/query_parser/query_parser.rs

@@ -672,7 +672,7 @@ impl QueryParser {
             }
             UserInputAst::Boost(ast, boost) => {
                 let (ast, errors) = self.compute_logical_ast_with_occur_lenient(*ast);
-                (ast.boost(boost as Score), errors)
+                (ast.boost(boost.into_inner() as Score), errors)
             }
             UserInputAst::Leaf(leaf) => {
                 let (ast, errors) = self.compute_logical_ast_from_leaf_lenient(*leaf);
@@ -2050,6 +2050,16 @@ mod test {
         );
     }
 
+    #[test]
+    pub fn test_deduplication() {
+        let query = "be be";
+        test_parse_query_to_logical_ast_helper(
+            query,
+            "(Term(field=0, type=Str, \"be\") Term(field=1, type=Str, \"be\"))",
+            false,
+        );
+    }
+
     #[test]
     pub fn test_regex() {
         let expected_regex = tantivy_fst::Regex::new(r".*b").unwrap();