diff --git a/deps/oblib/src/lib/wide_integer/ob_wide_integer_helper.h b/deps/oblib/src/lib/wide_integer/ob_wide_integer_helper.h
index d1012eb24..e5b2afd9d 100644
--- a/deps/oblib/src/lib/wide_integer/ob_wide_integer_helper.h
+++ b/deps/oblib/src/lib/wide_integer/ob_wide_integer_helper.h
@@ -510,31 +510,23 @@ inline bool is_zero(const ObDecimalInt *decint, int32_t int_bytes)
 }
 
 inline int negate(const ObDecimalInt *decint, int32_t int_bytes, ObDecimalInt *&out_decint,
-                  ObIAllocator &allocator)
+                  int32_t out_bytes, ObIAllocator &allocator)
 {
-#define NEG_VAL_CASE(int_type)                                                                     \
-  case sizeof(int_type): {                                                                         \
-    *reinterpret_cast<int_type *>(out_decint) = -(*reinterpret_cast<const int_type *>(decint));    \
-  } break
+#define DO_NEG_VAL(in_type, out_type)\
+  *reinterpret_cast<out_type *>(out_decint) = -(*reinterpret_cast<const in_type *>(decint));
 
   int ret = OB_SUCCESS;
   out_decint = nullptr;
-  if (int_bytes == 0) {
+  if (out_bytes == 0 || int_bytes == 0) {
     // do nothing
-  } else if (OB_ISNULL(out_decint = (ObDecimalInt *)allocator.alloc(int_bytes))) {
+  } else if (OB_ISNULL(out_decint = (ObDecimalInt *)allocator.alloc(out_bytes))) {
     ret = OB_ALLOCATE_MEMORY_FAILED;
     SQL_LOG(WARN, "allocate memory failed", K(ret));
   } else {
-    switch (int_bytes) {
-      LST_DO_CODE(NEG_VAL_CASE, int32_t, int64_t, int128_t, int256_t, int512_t);
-    default: {
-      ret = OB_ERR_UNEXPECTED;
-      SQL_LOG(WARN, "unexpected int bytes", K(ret), K(int_bytes));
-    }
-    }
+    DISPATCH_INOUT_WIDTH_TASK(int_bytes, out_bytes, DO_NEG_VAL);
   }
   return ret;
-#undef NEG_VAL_CASE
+#undef DO_NEG_VAL
 }
 
 template <typename T>
diff --git a/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp b/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp
index 3222e1f72..ced82f716 100644
--- a/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp
+++ b/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp
@@ -162,14 +162,16 @@ int ObRawExprResolverImpl::try_negate_const(ObRawExpr *&expr,
         ObObj new_val;
         if (const_expr->get_value().is_decimal_int()) {
           ObDecimalInt *neg_dec = nullptr;
+          int32_t out_prec =
+            const_expr->get_accuracy().get_precision() + (lib::is_oracle_mode() ? 0 : 1);
+          int32_t out_bytes = wide::ObDecimalIntConstValue::get_int_bytes_by_precision(out_prec);
           if (!is_odd) {// do nothing
           } else if (OB_FAIL(wide::negate(const_expr->get_value().get_decimal_int(),
                                           const_expr->get_value().get_int_bytes(), neg_dec,
-                                          ctx_.expr_factory_.get_allocator()))) {
+                                          out_bytes, ctx_.expr_factory_.get_allocator()))) {
             LOG_WARN("negate decimal int failed", K(ret));
           } else {
-            new_val.set_decimal_int(const_expr->get_value().get_int_bytes(),
-                                    const_expr->get_value().get_scale(), neg_dec);
+            new_val.set_decimal_int(out_bytes, const_expr->get_value().get_scale(), neg_dec);
             negated = true;
           }
         } else {