fix(schema-compiler): Support member alias tfor TD with granularity

Author: mcheshkov

packages/cubejs-schema-compiler/src/adapter/BaseTimeDimension.ts

@@ -70,11 +70,13 @@ export class BaseTimeDimension extends BaseFilter {
     return super.aliasName();
   }
 
-  // @ts-ignore
-  public unescapedAliasName(granularity: string) {
-    const actualGranularity = granularity || this.granularityObj?.granularity || 'day';
+  public unescapedAliasName(granularity?: string) {
+    const actualGranularity = granularity ?? this.granularityObj?.granularity ?? 'day';
 
-    return `${this.query.aliasName(this.dimension)}_${actualGranularity}`; // TODO date here for rollups
+    const fullName = `${this.dimension}.${actualGranularity}`;
+
+    // TODO date here for rollups
+    return this.query.aliasName(fullName);
   }
 
   public dateSeriesAliasName() {