Feat/um 49 query builder api (#1573)

* add uuid to event. add indexes

* eventdata api

* add event data

* remove test data

* update list

lib/clickhouse.js

@@ -65,8 +65,45 @@ function getCommaSeparatedStringFormat(data) {
 }
 
 function getBetweenDates(field, start_at, end_at) {
-  return `${field} between ${getDateFormat(start_at)} 
-    and ${getDateFormat(end_at)}`;
+  return `${field} between ${getDateFormat(start_at)} and ${getDateFormat(end_at)}`;
+}
+
+function getJsonField(column, property) {
+  return `${column}.${property}`;
+}
+
+function getEventDataColumnsQuery(column, columns) {
+  const query = Object.keys(columns).reduce((arr, key) => {
+    const filter = columns[key];
+
+    if (filter === undefined) {
+      return arr;
+    }
+
+    arr.push(`${filter}(${getJsonField(column, key)}) as ${key}_${filter}`);
+
+    return arr;
+  }, []);
+
+  return query.join(',\n');
+}
+
+function getEventDataFilterQuery(column, filters) {
+  const query = Object.keys(filters).reduce((arr, key) => {
+    const filter = filters[key];
+
+    if (filter === undefined) {
+      return arr;
+    }
+
+    arr.push(
+      `${getJsonField(column, key)} = ${typeof filter === 'string' ? `'${filter}'` : filter}`,
+    );
+
+    return arr;
+  }, []);
+
+  return query.join('\nand ');
 }
 
 function getFilterQuery(column, filters = {}, params = []) {
@@ -186,6 +223,8 @@ export default {
   getDateFormat,
   getCommaSeparatedStringFormat,
   getBetweenDates,
+  getEventDataColumnsQuery,
+  getEventDataFilterQuery,
   getFilterQuery,
   parseFilters,
   findUnique,