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     new e072002  [Doc] Update data-model-rollup.md (#4659)
e072002 is described below

commit e072002edc914eb08094cb9abc1e5ea2724db28b
Author: ZHAOLIPAN <[email protected]>
AuthorDate: Fri Sep 25 10:26:05 2020 +0800

    [Doc] Update data-model-rollup.md (#4659)
    
    fix typo
---
 docs/zh-CN/getting-started/data-model-rollup.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/zh-CN/getting-started/data-model-rollup.md 
b/docs/zh-CN/getting-started/data-model-rollup.md
index 974d897..9087f9c 100644
--- a/docs/zh-CN/getting-started/data-model-rollup.md
+++ b/docs/zh-CN/getting-started/data-model-rollup.md
@@ -88,7 +88,7 @@ AGGREGATE KEY(`user_id`, `date`, `timestamp`, `city`, `age`, 
`sex`)
 
 表中的列按照是否设置了 `AggregationType`,分为 Key (维度列) 和 Value(指标列)。没有设置 `AggregationType` 
的,如 `user_id`、`date`、`age` ... 等称为 **Key**,而设置了 `AggregationType` 的称为 **Value**。
 
-当我们导入数据时,对于 Key 列相同的行和聚合成一行,而 Value 列会按照设置的 `AggregationType` 进行聚合。 
`AggregationType` 目前有以下四种聚合方式:
+当我们导入数据时,对于 Key 列相同的行会聚合成一行,而 Value 列会按照设置的 `AggregationType` 进行聚合。 
`AggregationType` 目前有以下四种聚合方式:
 
 1. SUM:求和,多行的 Value 进行累加。
 2. REPLACE:替代,下一批数据中的 Value 会替换之前导入过的行中的 Value。


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