chore(query): improve project set

[Dousir9]

I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/

Summary

Improve performance of flatten, json_each, json_array_elements, jq.

Performance Test (Databend Cloud XSMALL)

select sum(id), sum(LENGTH(value)) from t, lateral flatten(input => c);

Query Duration: 7.6s → 3.1s (245%)
Snowflake XSMALL: 2.6s

Full Test Script

Prepare json data

import json
import csv
import os

def create_json_data(num_entries):
    data = []
    for i in range(num_entries):
        entry = {
            "id": i + 1,
            "name": f"name_{i + 1}",
            "age": 20 + (i % 10),
            "email": f"user{i + 1}@example.com",
            "address": {
                "street": f"street_{i + 1}",
                "city": f"city_{i % 5}",
                "postal_code": f"{10000 + i}"
            }
        }
        data.append(entry)
    return data

def save_as_variant_csv(data, filename):
    dir_path = os.path.dirname(__file__)
    with open(f'{dir_path}/{filename}', "w", newline="") as csv_file:
        writer = csv.writer(csv_file)
        for index, entry in enumerate(data):
            variant_format = json.dumps(entry)
            writer.writerow([index, variant_format])

if __name__ == "__main__":
    num_entries = 1000000
    filename = "dataset.csv"

    json_data = create_json_data(num_entries)
    save_as_variant_csv(json_data, filename)

Create table

create or replace table t(id int, c variant);
COPY INTO t FROM 'fs:////Users/xujinkai/Desktop/MyTest/databend/json' files = ('dataset.csv')  file_format = (type = CSV);

Test

select sum(id), sum(LENGTH(value)) from t, lateral flatten(input => c);

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Covered by existing tests

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

---

This change is 

[github-actions]

Docker Image for PR

• tag: pr-16326-88125a4-1724684469

note: this image tag is only available for internal use,
please check the internal doc for more details.