Semi-Structured Data

JSON columns in SQL interviews separate data engineers from analysts

JSON columns in SQL interviews separate data engineers from analysts

Category

SQL

Difficulty

advanced

Duration

25 minutes

Challenges

0 hands-on challenges

Topics covered: When the Schema Is Inside the Data, JSON_EXTRACT and Path Navigation, UNNEST: Flattening Arrays to Rows, Nested Aggregation and Reconstruction, Schema-on-Read vs Schema-on-Write Tradeoffs

Lesson Sections

1. When the Schema Is Inside the Data

   Content coming soon.

2. JSON_EXTRACT and Path Navigation

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3. UNNEST: Flattening Arrays to Rows

   Content coming soon.

4. Nested Aggregation and Reconstruction

   Content coming soon.

5. Schema-on-Read vs Schema-on-Write Tradeoffs

   Content coming soon.