apps.datastore.count method
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Usage info
This method is only available for workflow apps.
Refer to Datastores for more information.
This method is used to count the number of items in a datastore that match a query. The query uses a DynamoDB style of syntax. The following example would retrieve the number of records from the "good_tunes" datastore where "You" is in the song title.
{
"datastore": "good_tunes",
"expression": "contains (#song, :keyword)",
"expression_attributes": { "#song": "song" },
"expression_values": { ":keyword": "You" }
}
See Datastores for a more in-depth exploration.