Duplicate changes from rbayersdorfer-newrelic@567d3b1

src/content/docs/query-your-data/nrql-new-relic-query-language/get-started/nrql-syntax-clauses-functions.mdx

@@ -1829,6 +1829,46 @@ Here's a short video (3:21 minutes) explaining how to use `rate` to compare data
 Use non-aggregator functions for non-numerical data in NRQL queries.
 
 <CollapserGroup>
+  <Collapser
+    className="freq-link"
+    title={<InlineCode>accountId()</InlineCode>}
+  >
+    Use the `accountId()` function to return the account id for each event returned. This is especially useful for queries that run across multiple accounts.
+
+    This function takes no arguments.
+
+    See below:
+
+    <CollapserGroup>
+      <Collapser title="Get the account id for each Transaction event">
+        This query returns the account id associated with each Transaction event returned.
+
+        ```
+        SELECT accountId() FROM Transaction SINCE 1 day ago
+        ```
+      </Collapser>
+    </CollapserGroup>
+
+    <CollapserGroup>
+      <Collapser title="Get the count of Transaction events for each account id">
+        This query returns the number of Transaction events in the last day that are associated with each account id.
+
+        ```
+        SELECT count(*) FROM Transaction FACET accountId() SINCE 1 day ago
+        ```
+      </Collapser>
+    </CollapserGroup>
+
+    <CollapserGroup>
+      <Collapser title="Get the count of Transaction events for each account id specified in WHERE clause">
+        This query returns the number of Transaction events in the last day where the account id is specifically one of 1, 2, or 3.
+
+        ```
+        SELECT count(*) FROM Transaction WHERE accountId() IN (1,2,3) SINCE 1 day ago
+        ```
+      </Collapser>
+    </CollapserGroup>
+  </Collapser>
   <Collapser
     className="freq-link"
     title={<InlineCode>earliest(attribute)</InlineCode>}