diff --git a/src/sql/rewrite/ob_key_part.cpp b/src/sql/rewrite/ob_key_part.cpp
index 8379bb2d6d..13ac5b8b4f 100644
--- a/src/sql/rewrite/ob_key_part.cpp
+++ b/src/sql/rewrite/ob_key_part.cpp
@@ -1174,6 +1174,12 @@ int ObKeyPart::formalize_keypart(bool contain_row)
         LOG_WARN("failed to adjust in param values", K(ret));
       }
     }
+    if (OB_SUCC(ret) && is_in_key() &&
+       (in_keypart_->in_params_.empty() || in_keypart_->get_param_val_cnt() == 0)) {
+      if (OB_FAIL(convert_to_true_or_false(false))) {
+        LOG_WARN("failed to convert to always true");
+      }
+    }
   }
   return ret;
 }
diff --git a/src/sql/rewrite/ob_query_range.cpp b/src/sql/rewrite/ob_query_range.cpp
index fd7a8e5207..e6ac01c9ca 100644
--- a/src/sql/rewrite/ob_query_range.cpp
+++ b/src/sql/rewrite/ob_query_range.cpp
@@ -2877,7 +2877,10 @@ int ObQueryRange::get_multi_in_key_part(const ObOpRawExpr *l_expr,
       LOG_WARN("failed to adjust in param values", K(ret));
     } else if (OB_FAIL(tmp_key_part->formalize_keypart(contain_row_))) {
       LOG_WARN("failed to formalize in key", K(ret));
-    } else {
+    } else if (tmp_key_part->is_always_true() || tmp_key_part->is_always_false()) {
+      query_range_ctx_->cur_expr_is_precise_ = false;
+    }
+    if (OB_SUCC(ret)) {
       out_key_part = tmp_key_part;
     }
   }