Fix issue with multi-value query variables. Close #84

Author: devnied

CHANGELOG.md

@@ -5,6 +5,9 @@
 ### ⭐ Added
 - Add `$__timeTzFilter(column_name)` macro.
 
+### 🐞 Bug Fixes
+- Fix issue with multi-value query variables.
+
 ### 🔨 Changed
 - Upgrade grafana-plugin-sdk-go to version v0.246.0.
 - Upgrade gosnowflake to version v1.11.1.

README.md

@@ -102,6 +102,16 @@ For Time series query:
 
 ![Query editor](img/query.png)
 
+##### Query Variables
+
+You can use query variable in your query.<br/>
+Query variables are used to filter the data displayed in the dashboard.
+
+Sample query variable usage:
+```sql
+SELECT column FROM table WHERE column in ($variable)
+```
+
 ##### Layout of a query
 
 *Simple query*

src/datasource.ts

@@ -10,8 +10,15 @@ export class DataSource extends DataSourceWithBackend<SnowflakeQuery, SnowflakeO
     this.annotations = {};
   }
 
+  private format(value: any) {
+    if (Array.isArray(value)) {
+      return `'${value.join("','")}'`;
+    }
+    return value;
+  }
+
   applyTemplateVariables(query: SnowflakeQuery, scopedVars: ScopedVars): SnowflakeQuery {
-    query.queryText = getTemplateSrv().replace(query.queryText, scopedVars);
+    query.queryText = getTemplateSrv().replace(query.queryText, scopedVars, this.format);
     return query;
   }