From 04d918a5625f6b1e663a0c8c4b025833fac8366b Mon Sep 17 00:00:00 2001
From: qingsuijiu <642782632@qq.com>
Date: Tue, 9 Jul 2024 05:21:10 +0000
Subject: [PATCH] Solve the problem of scale misalignment when the parameter
 type of the IN expression is double.

---
 src/sql/engine/expr/ob_expr_in.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/sql/engine/expr/ob_expr_in.cpp b/src/sql/engine/expr/ob_expr_in.cpp
index 22a777e299..4835757a3e 100644
--- a/src/sql/engine/expr/ob_expr_in.cpp
+++ b/src/sql/engine/expr/ob_expr_in.cpp
@@ -480,6 +480,21 @@ int ObExprInOrNotIn::calc_result_typeN(ObExprResType &type,
 {
   int ret = ObVectorExprOperator::calc_result_typeN(type, types, param_num, type_ctx);
   if (OB_SUCC(ret)) {
+    if (ob_is_double_type(types[0].get_calc_type())) {
+      common::ObScale double_scale = 0;
+      int calc_scale_done = false;
+      for (int64_t i = 0; i < param_num && !calc_scale_done; ++i) {
+        if (types[i].get_calc_scale() == -1) {
+          double_scale = -1;
+          calc_scale_done = true;
+        } else if (types[i].get_calc_scale() > double_scale) {
+          double_scale = types[i].get_calc_scale();
+        }
+      }
+      for (int64_t i = 0; i < param_num; ++i) {
+        types[i].set_calc_scale(double_scale);
+      }
+    }
     type.set_scale(DEFAULT_SCALE_FOR_INTEGER);
     type.set_precision(DEFAULT_PRECISION_FOR_BOOL);
   }