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[20 Days of DynamoDB] Day 5 - Avoid overwrites when using DynamoDB UpdateItem API
Jan. 12, 2024, 4:41 a.m. | Abhishek Gupta
DEV Community dev.to
Posted: 12/Jan/2024
The UpdateItem
API creates a new item or modifies an existing item's attributes. If you want to avoid overwriting an existing attribute, make sure to use the SET
operation with if_not_exists
function.
Here is an example that sets the category of an item only if the item does not already have a category attribute:
resp, err := client.UpdateItem(context.Background(), &dynamodb.UpdateItemInput{
TableName: aws.String(tableName …
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