convert analytics queries

queries/analytics/session/getSessionMetrics.js

@@ -1,6 +1,20 @@
-import { parseFilters, rawQuery } from 'lib/db';
+import { CLICKHOUSE, RELATIONAL } from 'lib/constants';
+import {
+  getBetweenDatesClickhouse,
+  parseFilters,
+  rawQuery,
+  rawQueryClickhouse,
+  runAnalyticsQuery,
+} from 'lib/db';
 
-export function getSessionMetrics(website_id, start_at, end_at, field, filters = {}) {
+export async function getSessionMetrics(...args) {
+  return runAnalyticsQuery({
+    [`${RELATIONAL}`]: () => relationalQuery(...args),
+    [`${CLICKHOUSE}`]: () => clickhouseQuery(...args),
+  });
+}
+
+async function relationalQuery(website_id, start_at, end_at, field, filters = {}) {
   const params = [website_id, start_at, end_at];
   const { pageviewQuery, sessionQuery, joinSession } = parseFilters('pageview', filters, params);
 
@@ -23,3 +37,27 @@ export function getSessionMetrics(website_id, start_at, end_at, field, filters =
     params,
   );
 }
+
+async function clickhouseQuery(website_id, start_at, end_at, field, filters = {}) {
+  const params = [website_id];
+  const { pageviewQuery, sessionQuery, joinSession } = parseFilters('pageview', filters, params);
+
+  return rawQueryClickhouse(
+    `
+    select ${field} x, count(*) y
+    from session as x
+    where x.session_id in (
+      select pageview.session_id
+      from pageview
+        ${joinSession}
+      where pageview.website_id=$1
+      and ${getBetweenDatesClickhouse('pageview.created_at', start_at, end_at)}
+      ${pageviewQuery}
+      ${sessionQuery}
+    )
+    group by x
+    order by y desc
+    `,
+    params,
+  );
+}