From 7a01a86ddb68f7e595213a36533a57b457b77b5c Mon Sep 17 00:00:00 2001
From: rozetko <rozetko@corpglory.com>
Date: Fri, 13 Jan 2023 20:06:27 +0300
Subject: [PATCH] SQL: support Grafana aggregation macros ($__timeGroup and
 $__timeGroupAlias)

---
 src/connectors/utils.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/connectors/utils.ts b/src/connectors/utils.ts
index 3892437..9d4aec5 100644
--- a/src/connectors/utils.ts
+++ b/src/connectors/utils.ts
@@ -8,6 +8,12 @@ export function processSQLLimitOffset(sql: string, limit: number, offset: number
   }
   sql = splits[0]; // removes ";" from EOL
 
+  const reAggregation = /\$__timeGroup(?:Alias)?\(\s*([^,]+)\s*,\s*\$__interval[^\)]*\)/igm;
+  const occurence = reAggregation.exec(sql);
+  if(occurence) {
+    sql = sql.replace(reAggregation, occurence[1]);
+  }
+
   let relim = /limit [0-9]+/ig;
   let reoff = /offset [0-9]+/ig;