feat(grid): align query result editing

apps/desktop/src/lib/__tests__/tableEditing.spec.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from "vitest";
-import { DBX_ROWID_COLUMN, editablePrimaryKeys, isTableDataEditable } from "@/lib/tableEditing";
-import type { ColumnInfo } from "@/types/database";
+import { DBX_ROWID_COLUMN, canUseKeylessRowPredicate, editablePrimaryKeys, editableRowIdentifierColumns, isTableDataEditable } from "@/lib/tableEditing";
+import type { ColumnInfo, IndexInfo } from "@/types/database";
 
 function column(name: string, isPrimaryKey = false): ColumnInfo {
   return {
@@ -13,6 +13,16 @@ function column(name: string, isPrimaryKey = false): ColumnInfo {
   };
 }
 
+function index(columns: string[], isUnique = true, filter: string | null = null): IndexInfo {
+  return {
+    name: columns.join("_"),
+    columns,
+    is_unique: isUnique,
+    is_primary: false,
+    filter,
+  };
+}
+
 describe("tableEditing", () => {
   it("does not synthesize Oracle ROWID for views", () => {
     expect(editablePrimaryKeys("oracle", [column("ID"), column("NAME")], "VIEW")).toEqual([]);
@@ -22,4 +32,17 @@ describe("tableEditing", () => {
   it("treats view data tabs as readonly", () => {
     expect(isTableDataEditable("oracle", [DBX_ROWID_COLUMN], "VIEW")).toBe(false);
   });
+
+  it("allows keyless row predicates only for databases that support them", () => {
+    expect(canUseKeylessRowPredicate("postgres", [])).toBe(true);
+    expect(canUseKeylessRowPredicate("mysql", [])).toBe(true);
+    expect(canUseKeylessRowPredicate("jdbc", [])).toBe(false);
+    expect(canUseKeylessRowPredicate("postgres", ["id"])).toBe(false);
+  });
+
+  it("uses unique indexes as row identifiers when primary keys are absent", () => {
+    expect(editableRowIdentifierColumns("postgres", [column("email"), column("name")], [index(["email", "name"]), index(["email"])])).toEqual(["email"]);
+    expect(editableRowIdentifierColumns("postgres", [column("email"), column("name")], [index(["email"], true, "email IS NOT NULL")])).toEqual([]);
+    expect(editableRowIdentifierColumns("postgres", [column("id", true), column("email")], [index(["email"])])).toEqual(["id"]);
+  });
 });