diff --git a/extensions/ql-vscode/src/common/bqrs-cli-types.ts b/extensions/ql-vscode/src/common/bqrs-cli-types.ts
index aec2603c9..21a61d24d 100644
--- a/extensions/ql-vscode/src/common/bqrs-cli-types.ts
+++ b/extensions/ql-vscode/src/common/bqrs-cli-types.ts
@@ -21,7 +21,7 @@ type ColumnKind =
   | typeof ColumnKindCode.DATE
   | typeof ColumnKindCode.ENTITY;
 
-export interface Column {
+interface Column {
   name?: string;
   kind: ColumnKind;
 }
@@ -112,7 +112,7 @@ export type BqrsKind =
   | "Date"
   | "Entity";
 
-interface BqrsColumn {
+export interface BqrsColumn {
   name?: string;
   kind: BqrsKind;
 }
diff --git a/extensions/ql-vscode/src/common/interface-types.ts b/extensions/ql-vscode/src/common/interface-types.ts
index 928df86fb..abadb6ac6 100644
--- a/extensions/ql-vscode/src/common/interface-types.ts
+++ b/extensions/ql-vscode/src/common/interface-types.ts
@@ -3,8 +3,8 @@ import {
   RawResultSet,
   ResultRow,
   ResultSetSchema,
-  Column,
   ResolvableLocationValue,
+  BqrsColumn,
 } from "../common/bqrs-cli-types";
 import {
   VariantAnalysis,
@@ -353,7 +353,7 @@ export interface SetComparisonsMessage {
       time: string;
     };
   };
-  readonly columns: readonly Column[];
+  readonly columns: readonly BqrsColumn[];
   readonly commonResultSetNames: string[];
   readonly currentResultSetName: string;
   readonly rows: QueryCompareResult | undefined;
diff --git a/extensions/ql-vscode/src/compare/compare-view.ts b/extensions/ql-vscode/src/compare/compare-view.ts
index 7a622de46..ba84ecdf6 100644
--- a/extensions/ql-vscode/src/compare/compare-view.ts
+++ b/extensions/ql-vscode/src/compare/compare-view.ts
@@ -2,19 +2,15 @@ import { ViewColumn } from "vscode";
 
 import {
   FromCompareViewMessage,
-  ToCompareViewMessage,
   QueryCompareResult,
+  ToCompareViewMessage,
 } from "../common/interface-types";
 import { Logger, showAndLogExceptionWithTelemetry } from "../common/logging";
 import { extLogger } from "../common/logging/vscode";
 import { CodeQLCliServer } from "../codeql-cli/cli";
 import { DatabaseManager } from "../databases/local-databases";
 import { jumpToLocation } from "../databases/local-databases/locations";
-import {
-  transformBqrsResultSet,
-  RawResultSet,
-  BQRSInfo,
-} from "../common/bqrs-cli-types";
+import { BQRSInfo, DecodedBqrsChunk } from "../common/bqrs-cli-types";
 import resultsDiff from "./resultsDiff";
 import { CompletedLocalQueryInfo } from "../query-results";
 import { assertNever, getErrorMessage } from "../common/helpers-pure";
@@ -122,7 +118,7 @@ export class CompareView extends AbstractWebview<
             time: to.startTime,
           },
         },
-        columns: fromResultSet.schema.columns,
+        columns: fromResultSet.columns,
         commonResultSetNames,
         currentResultSetName,
         rows,
@@ -197,7 +193,7 @@ export class CompareView extends AbstractWebview<
   private async findCommonResultSetNames(
     { from, fromSchemas, to, toSchemas }: ComparePair,
     selectedResultSetName: string | undefined,
-  ): Promise<[string[], string, RawResultSet, RawResultSet]> {
+  ): Promise<[string[], string, DecodedBqrsChunk, DecodedBqrsChunk]> {
     const {
       commonResultSetNames,
       currentResultSetDisplayName,
@@ -231,20 +227,19 @@ export class CompareView extends AbstractWebview<
     bqrsInfo: BQRSInfo,
     resultSetName: string,
     resultsPath: string,
-  ): Promise<RawResultSet> {
+  ): Promise<DecodedBqrsChunk> {
     const schema = bqrsInfo["result-sets"].find(
       (schema) => schema.name === resultSetName,
     );
     if (!schema) {
       throw new Error(`Schema ${resultSetName} not found.`);
     }
-    const chunk = await this.cliServer.bqrsDecode(resultsPath, resultSetName);
-    return transformBqrsResultSet(schema, chunk);
+    return await this.cliServer.bqrsDecode(resultsPath, resultSetName);
   }
 
   private compareResults(
-    fromResults: RawResultSet,
-    toResults: RawResultSet,
+    fromResults: DecodedBqrsChunk,
+    toResults: DecodedBqrsChunk,
   ): QueryCompareResult {
     // Only compare columns that have the same name
     return resultsDiff(fromResults, toResults);
diff --git a/extensions/ql-vscode/src/compare/resultsDiff.ts b/extensions/ql-vscode/src/compare/resultsDiff.ts
index 6916beebd..27477d0fc 100644
--- a/extensions/ql-vscode/src/compare/resultsDiff.ts
+++ b/extensions/ql-vscode/src/compare/resultsDiff.ts
@@ -1,4 +1,4 @@
-import { RawResultSet } from "../common/bqrs-cli-types";
+import { DecodedBqrsChunk } from "../common/bqrs-cli-types";
 import { QueryCompareResult } from "../common/interface-types";
 
 /**
@@ -20,29 +20,29 @@ import { QueryCompareResult } from "../common/interface-types";
  *  3. If the queries are 100% disjoint
  */
 export default function resultsDiff(
-  fromResults: RawResultSet,
-  toResults: RawResultSet,
+  fromResults: DecodedBqrsChunk,
+  toResults: DecodedBqrsChunk,
 ): QueryCompareResult {
-  if (fromResults.schema.columns.length !== toResults.schema.columns.length) {
+  if (fromResults.columns.length !== toResults.columns.length) {
     throw new Error("CodeQL Compare: Columns do not match.");
   }
 
-  if (!fromResults.rows.length) {
+  if (!fromResults.tuples.length) {
     throw new Error("CodeQL Compare: Source query has no results.");
   }
 
-  if (!toResults.rows.length) {
+  if (!toResults.tuples.length) {
     throw new Error("CodeQL Compare: Target query has no results.");
   }
 
   const results = {
-    from: arrayDiff(fromResults.rows, toResults.rows),
-    to: arrayDiff(toResults.rows, fromResults.rows),
+    from: arrayDiff(fromResults.tuples, toResults.tuples),
+    to: arrayDiff(toResults.tuples, fromResults.tuples),
   };
 
   if (
-    fromResults.rows.length === results.from.length &&
-    toResults.rows.length === results.to.length
+    fromResults.tuples.length === results.from.length &&
+    toResults.tuples.length === results.to.length
   ) {
     throw new Error("CodeQL Compare: No overlap between the selected queries.");
   }
diff --git a/extensions/ql-vscode/src/stories/compare/CompareTable.stories.tsx b/extensions/ql-vscode/src/stories/compare/CompareTable.stories.tsx
index 1631ae2ac..b338b2c77 100644
--- a/extensions/ql-vscode/src/stories/compare/CompareTable.stories.tsx
+++ b/extensions/ql-vscode/src/stories/compare/CompareTable.stories.tsx
@@ -32,8 +32,8 @@ CompareTable.args = {
       },
     },
     columns: [
-      { name: "a", kind: "e" },
-      { name: "b", kind: "e" },
+      { name: "a", kind: "Entity" },
+      { name: "b", kind: "Entity" },
     ],
     commonResultSetNames: ["edges", "nodes", "subpaths", "#select"],
     currentResultSetName: "edges",
diff --git a/extensions/ql-vscode/src/view/results/RawTableHeader.tsx b/extensions/ql-vscode/src/view/results/RawTableHeader.tsx
index aa66b9167..5243134db 100644
--- a/extensions/ql-vscode/src/view/results/RawTableHeader.tsx
+++ b/extensions/ql-vscode/src/view/results/RawTableHeader.tsx
@@ -6,10 +6,11 @@ import {
   SortDirection,
 } from "../../common/interface-types";
 import { nextSortDirection } from "./result-table-utils";
-import { Column } from "../../common/bqrs-cli-types";
 
 interface Props {
-  readonly columns: readonly Column[];
+  readonly columns: ReadonlyArray<{
+    name?: string;
+  }>;
   readonly schemaName: string;
   readonly sortState?: RawResultsSortState;
   readonly preventSort?: boolean;