您可以使用JSON函数和数组函数的组合来操作这种数据。
JSON_EXTRACT_ARRAY可以将JSON格式的字符串转换为一个数组，然后UNNEST可以将每个条目转换为行，最后JSON_EXTRACT_SCALAR可以取出单独的列。
所以这里有一个例子，我认为你正在努力实现：

with sampledata as (
  select """[{"id":"63bddc8cfe21ec002d26b7f4","description":"General Admission", "src_currency":"USD","src_price":50.0,"src_fee":0.0,"src_commission":1.79,"src_discount":0.0,"applicable_pass_id":null,"seats_label":null,"seats_section_label":null,"seats_parent_type":null,"seats_parent_label":null,"seats_self_type":null,"seats_self_label":null,"rate_type":"Rate","option_name":null,"price_level_id":null,"src_discount_price":50.0,"rate_id":"636d6d5cea8c6000222c640d","cost_item_id":"63bddc8cfe21ec002d26b7f4"},{"id":"63bddc8cfe21ec002d26b7f4","description":"General Admission", "src_currency":"USD","src_price":50.0,"src_fee":0.0,"src_commission":1.79,"src_discount":0.0,"applicable_pass_id":null,"seats_label":null,"seats_section_label":null,"seats_parent_type":null,"seats_parent_label":null,"seats_self_type":null,"seats_self_label":null,"rate_type":"Rate","option_name":null,"price_level_id":null,"src_discount_price":50.0,"rate_id":"636d6d5cea8c6000222c640d","cost_item_id":"63bddc8cfe21ec002d26b7f4"}]""" as my_json_string
)
select JSON_EXTRACT_SCALAR(f,'$.id') as id, JSON_EXTRACT_SCALAR(f,'$.rate_type') as rate_type, JSON_EXTRACT_SCALAR(f,'$.cost_item_id') as cost_item_id
from sampledata, UNNEST(JSON_EXTRACT_ARRAY(my_json_string)) as f

它根据该数据创建具有特定列的行，如下所示：