hiSandog opened a new pull request, #13172:
URL: https://github.com/apache/dolphinscheduler/pull/13172
When I open the home page, I always feel slow, I wonder why a paging query
project interface is so slow.
```
select
<include refid="baseSqlV2">
<property name="alias" value="p"/>
</include>
,
u.user_name as user_name,
(SELECT COUNT(*) FROM t_ds_process_definition AS def WHERE
def.project_code = p.code) AS def_count,
(SELECT COUNT(*) FROM t_ds_process_definition_log def,
t_ds_process_instance inst WHERE def.code =
inst.process_definition_code and def.version =
inst.process_definition_version AND def.project_code = p.code
AND inst.state=1 ) as inst_running_count
```
This sql should produce many sub-queries that affect the efficiency of the
sql execution.
So I did some optimization
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