PostgreSQL - JSON and JSONB
Which operator would you use to extract the value of a JSON key as plain text in PostgreSQL?
Which operator would you use to extract the value of a JSON key as plain text in PostgreSQL?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify operator for text extraction
The->>operator extracts the JSON field value as plain text.Step 2: Differentiate from similar operators
The->operator returns JSON, while#>and#>>are for JSON path extraction, not simple key extraction.Final Answer:
->> -> Option CQuick Check:
->>operator = Extract JSON field as text [OK]
Quick Trick: Use ->> to get JSON key value as text [OK]
Common Mistakes:
- Using -> instead of ->> for text extraction
- Confusing #> and ->>
- Assuming ->> returns JSON
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