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# Method name:

data.items.aggregate(dataCollectionId: string)

# Method Link:

https://dev.wix.com/docs/sdk/data-items-sdk/data/items/aggregate.md

# Method Description:

undefined

# Method Permissions:



# Method Permissions Scopes IDs:

undefined



# Method Code Examples:

## Perform an aggregation

```javascript
import { items } from "@wix/data";

async function aggregateItems() {

  const results = await items.aggregate("PopulationData")
    .run();

  if (results.items.length > 0) {
    const items = results.items;
    const numItems = results.length;
    const hasNext = results.hasNext();
  } else {
    // handle case where no matching items found
  }
}
```



## Create an aggregation and run it

```javascript
import { items } from "@wix/data";

async function aggregateItems() {

  const results = await items.aggregate("PopulationData")
    .run();

  if (results.items.length > 0) {
    const items = results.items;
    const numItems = results.length;
    const hasNext = results.hasNext();
  } else {
    // handle case where no matching items found
  }
}
```

## default

```javascript
try {
      const result = await items.aggregate("collection-0.4863025090506383");
      return result;
    } catch (error) {
      console.error(error);
      throw error;
   }
```