Combine multiple base table attributes to form a DynamoDB GSI PK/SK

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I am trying to create a GSI on a DynamoDB Table using AWS console by choosing PK or SK as combination of multiple base table attributes. However, none of the below formats are working for either PK or SK. Please guide me where I am doing wrong ?

  1. <custid>#<userid>
  2. [custid]#[userid]
  3. CUST#<custid>#USER#<userid>
  4. CUST#[custid]#USER#[userid]

Base Table has attributes: id (PK) (string), custid (string), userid (string)

#2 - Reference link(s): https://repost.aws/knowledge-center/dynamodb-create-composite-key https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-sort-keys.html

#1,#3 - Reference link(s): https://www.alexdebrie.com/posts/dynamodb-one-to-many/#denormalization-by-using-a-complex-attribute:~:text=ORG%23%3COrgName%3E%23USER%23%3CUserName%3E

Mani
demandé il y a 3 mois123 vues
1 réponse
1
Réponse acceptée

DynamoDB won't handle this for you. You'll need to construct the concatenated value on the application side and store as its own attribute in the base table.

répondu il y a 3 mois
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EXPERT
vérifié il y a 2 mois
  • I guess you are right. Thanks!

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