Add reporting review guidance and fixtures

microsoft/knowledge/reporting/reportextension-dataitem-trigger-order-is-explicit.good.al

@@ -0,0 +1,30 @@
+report 50103 "Base Customer Export"
+{
+    ProcessingOnly = true;
+
+    dataset
+    {
+        dataitem(Customer; Customer)
+        {
+            trigger OnPreDataItem()
+            begin
+                SetRange(Blocked, Blocked::" ");
+                SetRange("Country/Region Code");
+            end;
+        }
+    }
+}
+
+reportextension 50104 "Local Customer Export" extends "Base Customer Export"
+{
+    dataset
+    {
+        modify(Customer)
+        {
+            trigger OnAfterPreDataItem()
+            begin
+                SetFilter("Country/Region Code", '<>%1', '');
+            end;
+        }
+    }
+}