diff --git a/web/src/utils/query/sqlCompletion.spec.ts b/web/src/utils/query/sqlCompletion.spec.ts
index ea36275a83..fc3b5d2e9c 100644
--- a/web/src/utils/query/sqlCompletion.spec.ts
+++ b/web/src/utils/query/sqlCompletion.spec.ts
@@ -849,6 +849,25 @@ describe("D1/N5 — field entries surface the column type", () => {
     expect(buildFieldEntry({ name: "code" } as any).detail).toBeUndefined();
   });
 
+  // Two field shapes exist in the app and both must work. Logs SCHEMA fields
+  // carry the type as `dataType` (useStreamFields.ts:452) while Logs DYNAMIC
+  // fields and the Alerts columns carry it as `type`. Reading only `type` left
+  // every schema field in Logs — the common case — with a blank detail, which
+  // 13k passing tests missed because every fixture used `type`.
+  it("reads the type from `dataType` as Logs schema fields supply it", () => {
+    expect(buildFieldEntry({ name: "host_name", dataType: "Utf8" } as any).detail).toBe("Utf8");
+  });
+
+  it("still reads `type` as dynamic fields and Alerts columns supply it", () => {
+    expect(buildFieldEntry({ name: "code", type: "Int64" }).detail).toBe("Int64");
+  });
+
+  it("prefers `type` when a field carries both", () => {
+    expect(buildFieldEntry({ name: "x", type: "Int64", dataType: "Utf8" } as any).detail).toBe(
+      "Int64",
+    );
+  });
+
   it("does not mark a plain field name as a snippet", () => {
     expect(buildFieldEntry({ name: "code", type: "Utf8" }).insertTextRules).toBeUndefined();
   });
diff --git a/web/src/utils/query/sqlCompletion.ts b/web/src/utils/query/sqlCompletion.ts
index 942433fc9a..279be47b1f 100644
--- a/web/src/utils/query/sqlCompletion.ts
+++ b/web/src/utils/query/sqlCompletion.ts
@@ -981,7 +981,13 @@ export const buildFunctionArgs = (numArgs: number | string): string => {
  * discarded; it is exactly what belongs in the suggest widget's inline column,
  * and it is what type-aware operator suggestions will key off later.
  */
-export const buildFieldEntry = (field: { name: string; type?: string }): SqlCompletionEntry => {
+export const buildFieldEntry = (field: {
+  name: string;
+  /** Dynamic fields and Alerts columns carry the type here. */
+  type?: string;
+  /** Logs SCHEMA fields carry it here instead (useStreamFields.ts:452). */
+  dataType?: string;
+}): SqlCompletionEntry => {
   const entry: SqlCompletionEntry = {
     name: field.name,
     label: field.name,
@@ -989,7 +995,9 @@ export const buildFieldEntry = (field: { name: string; type?: string }): SqlComp
     insertText: field.name,
     sortText: SORT_LANE.field + field.name,
   };
-  // Omit rather than render "undefined" in the widget.
-  if (field.type) entry.detail = field.type;
+  // Two field shapes exist in the app: schema fields use `dataType`, dynamic
+  // fields and Alerts columns use `type`. Omit rather than render "undefined".
+  const columnType = field.type || field.dataType;
+  if (columnType) entry.detail = columnType;
   return entry;
 };