You want to increase the stock field by 5 in a product document with ID 10. Which update request correctly does this?

hard🚀 Application Q15 of 15

Elasticsearch - Document Operations

You want to increase the stock field by 5 in a product document with ID 10. Which update request correctly does this?

APOST /products/_update/10 { "script": "ctx._source.stock += 5" }

BPOST /products/_update/10 { "doc": { "stock": "+5" } }

CPOST /products/_update/10 { "doc": { "stock": 5 } }

DPOST /products/_update/10 { "update": { "stock": 5 } }

Step-by-Step Solution

Solution:

Step 1: Understand how to increment a field
To increase a numeric field, use a script that modifies the field value.
Step 2: Analyze each option
POST /products/_update/10 { "script": "ctx._source.stock += 5" } uses a script to add 5 to stock. Others either overwrite or use wrong syntax.
Final Answer:
POST /products/_update/10 { "script": "ctx._source.stock += 5" } -> Option A
Quick Check:
Use script to increment numeric fields [OK]

Quick Trick: Use script with ctx._source.field += value to increment [OK]

Common Mistakes:

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