Validate you can't group by complex fields.

packages/server/src/api/routes/tests/viewV2.spec.ts

@@ -25,8 +25,8 @@ import {
   BBReferenceFieldSubType,
   NumericCalculationFieldMetadata,
   ViewV2Schema,
-  canGroupBy,
   ViewV2Type,
+  JsonTypes,
 } from "@budibase/types"
 import { generator, mocks } from "@budibase/backend-core/tests"
 import { DatabaseName, getDatasource } from "../../../integrations/tests/utils"
@@ -738,33 +738,33 @@ describe.each([
         })
       })
 
-      it.only("cannot use complex types as group-by fields", async () => {
-        const complexTypes = Object.values(FieldType).filter(
-          type => !canGroupBy(type)
-        )
-        for (const type of complexTypes) {
-          const field = { name: "field", type } as FieldSchema
-          const table = await config.api.table.save(
-            saveTableRequest({ schema: { field } })
-          )
-          await config.api.viewV2.create(
-            {
-              tableId: table._id!,
-              name: generator.guid(),
-              type: ViewV2Type.CALCULATION,
-              schema: {
-                field: { visible: true },
+      // We don't allow the creation of tables with most JsonTypes when using
+      // external datasources.
+      isInternal &&
+        it("cannot use complex types as group-by fields", async () => {
+          for (const type of JsonTypes) {
+            const field = { name: "field", type } as FieldSchema
+            const table = await config.api.table.save(
+              saveTableRequest({ schema: { field } })
+            )
+            await config.api.viewV2.create(
+              {
+                tableId: table._id!,
+                name: generator.guid(),
+                type: ViewV2Type.CALCULATION,
+                schema: {
+                  field: { visible: true },
+                },
               },
-            },
-            {
-              status: 400,
-              body: {
-                message: "",
-              },
-            }
-          )
-        }
-      })
+              {
+                status: 400,
+                body: {
+                  message: `Grouping by fields of type "${type}" is not supported`,
+                },
+              }
+            )
+          }
+        })
     })
 
     describe("update", () => {

packages/server/src/sdk/app/views/index.ts

@@ -1,5 +1,6 @@
 import {
   CalculationType,
+  canGroupBy,
   FieldType,
   isNumeric,
   PermissionLevel,
@@ -121,6 +122,13 @@ async function guardCalculationViewSchema(
         400
       )
     }
+
+    if (!canGroupBy(targetSchema.type)) {
+      throw new HTTPError(
+        `Grouping by fields of type "${targetSchema.type}" is not supported`,
+        400
+      )
+    }
   }
 }