1. 학습
    2. /
  2. 강의
    3. /
  3. Introduction to NoSQL
Connected

연습 문제

Querying top-level JSON data

With Postgres JSON, querying semi-structured data is a breeze! Postgres provides built-in operators, including -> and ->>. In this example, you'll practice using these operators to query review data from a column of type JSON. This table takes the form below:

nested_reviews table, showing sample data.

To give you a head-start, pandas has been imported as pd, and a connection object has been created and stored in the db_engine variable. Have fun!

지침

100 XP
  • Use the -> operator to query the location field from the review column in the nested_reviews table, as JSON.
  • Query the statement field as text from the review column in the nested_reviews table.
  • Execute the query using pandas, and print the result.