queryDataItems( )

Creates a query to retrieve items from a database collection.

について queryDataItems() function builds a query to retrieve data items from a collection and returns a DataItemsQueryBuilder オブジェクトがある。

The returned object contains the query definition which is typically used to run the query using the find() 関数である。

You can refine the query by chaining DataItemsQueryBuilder functions onto the query. DataItemsQueryBuilder functions enable you to sort, filter, and control the results that queryDataItems() returns.

について queryDataItems() function runs with the following DataItemsQueryBuilder defaults that you can override:

• skip: 0
• limit: 50
• descending: by _createdDate

The functions that are chained to queryDataItems() are applied in the order they are called. For example, if you sort on an age field in ascending order and then on a 名称 field in descending order, the results are sorted first by the age of the items and then, if there are multiple results with the same age, the items are sorted by name in descending order, per age value.

If the collection that you are querying has references to other collections, by default the data from referenced collections is not retrieved. To get the data from referenced items, specify them in the options.includeReferencedItems parameter.