Partial updates in Elasticsearch - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to update the document with id '1' in the 'products' index using a partial update.

Elasticsearch

{
  "script": {
    "source": "ctx._source.price = [1]",
    "params": {
      "price": 20
    }
  }
}

Drag options to blanks, or click blank then click option'

Actx._price

Bprice

Cparams.price

Dctx.price

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'price' directly without 'params.' prefix

Trying to access 'ctx.price' which does not exist

The script uses params.price to access the parameter passed for the update.

2fill in blank

medium

Complete the code to update the 'stock' field by incrementing it by 5 using a script.

Elasticsearch

{
  "script": {
    "source": "ctx._source.stock [1]= 5"
  }
}

Drag options to blanks, or click blank then click option'

A*

B+

C-

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-' which would decrement the value

Using '*' or '/' which would multiply or divide

The operator += increments the 'stock' field by 5.

3fill in blank

hard

Fix the error in the partial update to set the 'status' field to 'active'.

Elasticsearch

{
  "doc": {
    "status": [1]
  }
}

Drag options to blanks, or click blank then click option'

Astatus

B'active'

Cactive

D"active"

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted active which is invalid JSON

Using single quotes which are not valid in JSON

String values in JSON must be enclosed in double quotes, so use "active".

4fill in blank

hard

Fill both blanks to create a partial update that adds a tag 'new' to the 'tags' array.

Elasticsearch

{
  "script": {
    "source": "ctx._source.tags.[1](params.tag)",
    "params": {
      "tag": [2]
    }
  }
}

Drag options to blanks, or click blank then click option'

Aadd

B"new"

Cappend

D'new'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'append' which is not valid in painless scripts

Using single quotes for strings

The method to add an element to an array is add, and the tag string must be double quoted "new".

5fill in blank

hard

Fill all three blanks to create a partial update that sets 'rating' to 4.5 only if the current rating is less than 4.5.

Elasticsearch

{
  "script": {
    "source": "if (ctx._source.[1] [2] params.rating) { ctx._source.[3] = params.rating }",
    "params": {
      "rating": 4.5
    }
  }
}

Drag options to blanks, or click blank then click option'

Ascore

B<

Crating

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<' in the condition

Using different field names for check and update

The field to check and update is 'rating'. The condition uses '<' to check if current rating is less than 4.5.