There is no data in the result of full table aggregation calculation for an empty table

**Bug Description**
There is no data in the result of full table aggregation calculation for an empty table

+ case
```yaml
- id: 3
desc: "表是空的"
tags: ["TODO","@chengjing,bug,"]
mode: request-unsupport
inputs:
-
columns : ["id bigint","c1 string","c2 int","c7 timestamp"]
indexs: ["index1:c1:c7"]
sql: select count(c2) as v1,max(c2) as v2,min(c2) as v3,avg(c2) as v4,sum(c2) as v5 from {0};
expect:
order: c1
columns: ["v1 int","v2 int","v3 int","v4 double","v5 int"]
rows:
- [0,null,null,null,null]
```

**Expected Behavior**
Expect to have data
**Relation Case**
test_udaf_table.yaml id:3
**Steps to Reproduce**

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