From 34d57ab6f18077604178fc209aff9b50f6f7f35e Mon Sep 17 00:00:00 2001
From: Zach41 <zach_41@163.com>
Date: Tue, 16 Jul 2024 09:24:02 +0000
Subject: [PATCH] Fix result precision deduction of minus expr

---
 src/sql/engine/expr/ob_expr_minus.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sql/engine/expr/ob_expr_minus.cpp b/src/sql/engine/expr/ob_expr_minus.cpp
index 691727cc3..334c8ca7d 100644
--- a/src/sql/engine/expr/ob_expr_minus.cpp
+++ b/src/sql/engine/expr/ob_expr_minus.cpp
@@ -98,6 +98,7 @@ int ObExprMinus::calc_result_type2(ObExprResType &type,
         int64_t inter_part_length2 = type2.get_precision() - type2.get_scale();
         precision = static_cast<ObPrecision>(MAX(inter_part_length1, inter_part_length2)
                                             + CARRY_OFFSET + scale);
+        precision = MIN(OB_MAX_DECIMAL_POSSIBLE_PRECISION, precision);
       }
     }
     type.set_scale(scale);