[Solved] You wrote this dbt SQL code to extract a nested JSON value:SELECT data->'user'->>email AS email FROM usersBut you get an error. What is the likely cause? | dbt

dbt - Advanced Patterns

You wrote this dbt SQL code to extract a nested JSON value:

SELECT
  data->'user'->>email AS email
FROM users

But you get an error. What is the likely cause?

AUsing ->> after -> on a JSON object without parentheses

BUsing -> instead of ->> for text extraction

CMissing quotes around 'email' key

DThe JSON column 'data' is not valid JSON

Step-by-Step Solution

Solution:

Step 1: JSON path operators require quoted keys
Keys in -> and ->> must be string literals enclosed in single quotes.
Step 2: Identify syntax issue
In data->'user'->>email, email lacks quotes and is interpreted as an identifier (e.g., column name) instead of a JSON key, causing a syntax error. Correct syntax: data->'user'->>'email'.
Final Answer:
Missing quotes around 'email' key -> Option C
Quick Check:
JSON keys must be quoted strings [OK]

Quick Trick: Always quote JSON keys in -> and ->> operators [OK]

Common Mistakes:

MISTAKES

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