zclllyybb commented on code in PR #2988:
URL: https://github.com/apache/doris-website/pull/2988#discussion_r2446635661
##########
i18n/zh-CN/docusaurus-plugin-content-docs/current/sql-manual/sql-functions/aggregate-functions/agg-array-sum.md:
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@@ -0,0 +1,69 @@
+---
+{
+"title": "AGG_ARRAY_SUM",
+"language": "zh-CN"
+}
+---
+
+## 描述
+
+计算输入数组每一位置元素和，返回一个新的数组
+
+## 语法
+
+```sql
+AGG_ARRAY_SUM(<expr>)
+```
+
+## 参数
+
+| 参数 | 说明 |
+| -- |---------------------------------------------|
+| `<expr>` | 需要求和的表达式，元素类型为Numerical的Array。 |
+
+## 返回值
+
+返回一个包含数组每个位置元素和的新数组。
+如果组内没有合法数据，则返回空数组。
+
+## 举例
Review Comment:
please also add case that there's null value in array
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