taiyang-li commented on issue #7889:
URL:
https://github.com/apache/incubator-gluten/issues/7889#issuecomment-2467195169
It is not worth to try.
``` sql
CREATE TEMPORARY VIEW lineitem
USING org.apache.spark.sql.parquet
OPTIONS (
path
"/data1/liyang/cppproject/gluten/gluten-core/src/test/resources/tpch-data/lineitem"
) ;
select max(size(array_union(split(l_comment, ' '), array('a', null)))) from
lineitem;
```
```
使用CH arrayUnion
1 row selected (335.812 seconds)
使用CH 表达式组合
1 row selected (0.552 seconds)
vanilla
1 row selected (2.922 seconds)
```
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