fix(grid): keep manual primary keys in exclude-PK insert copies

Closes #8293

apps/desktop/src/composables/__tests__/useDataGridExport.spec.ts

@@ -923,17 +923,43 @@ describe("useDataGridExport prepared row statements", () => {
   });
 
   it("disables INSERT when primary-key exclusion removes every selected column", () => {
+    const autoIncrementTable: DataGridTableMeta = {
+      tableName: "users",
+      primaryKeys: ["id"],
+      columns: [{ name: "id", data_type: "int", is_nullable: false, is_primary_key: true, extra: "auto_increment" }],
+    };
     const matrix: CellSelectionMatrix = { rowIndexes: [0], columnIndexes: [0], columns: ["id"], rows: [[1]] };
     const excludePrimaryKeys = {
       ...DEFAULT_DATA_GRID_EXTRACTOR_OPTIONS,
       sql: { ...DEFAULT_DATA_GRID_EXTRACTOR_OPTIONS.sql, skipGeneratedColumns: false, excludePrimaryKeysFromInsert: true },
     };
 
-    const state = createExportState(editableTable, ["id"], matrix, [1], undefined, undefined, [], excludePrimaryKeys);
+    const state = createExportState(autoIncrementTable, ["id"], matrix, [1], undefined, undefined, [], excludePrimaryKeys);
 
     expect(state.canCopyWithExtractor("sql-inserts")).toBe(false);
   });
 
+  it("keeps a manually-assigned primary key insertable under primary-key exclusion", () => {
+    const compositeKeyTable: DataGridTableMeta = {
+      tableName: "daily_stats",
+      primaryKeys: ["id", "stat_date"],
+      columns: [
+        { name: "id", data_type: "bigint", is_nullable: false, is_primary_key: true, extra: "auto_increment" },
+        { name: "stat_date", data_type: "date", is_nullable: false, is_primary_key: true },
+        { name: "name", data_type: "varchar", is_nullable: false },
+      ],
+    };
+    const matrix: CellSelectionMatrix = { rowIndexes: [0], columnIndexes: [1], columns: ["stat_date"], rows: [["2026-08-18"]] };
+    const excludePrimaryKeys = {
+      ...DEFAULT_DATA_GRID_EXTRACTOR_OPTIONS,
+      sql: { ...DEFAULT_DATA_GRID_EXTRACTOR_OPTIONS.sql, skipGeneratedColumns: false, excludePrimaryKeysFromInsert: true },
+    };
+
+    const state = createExportState(compositeKeyTable, ["id", "stat_date", "name"], matrix, [1, "2026-08-18", "Ada"], undefined, undefined, [], excludePrimaryKeys);
+
+    expect(state.canCopyWithExtractor("sql-inserts")).toBe(true);
+  });
+
   it("keeps an auto-increment primary key when copying only the primary key column as INSERT", () => {
     const autoIncrementTable: DataGridTableMeta = {
       tableName: "users",

apps/desktop/src/composables/useDataGridExport.ts

@@ -582,7 +582,7 @@ export function useDataGridExport(options: UseDataGridExportOptions) {
 
   function insertableCopyColumnCount(excludePrimaryKeys: boolean, copyColumns = effectiveColumns(sourceColumns.value, columns.value), extractorOptions?: DataGridExtractorOptions): number {
     const primaryKeySet = new Set((tableMeta.value?.primaryKeys ?? []).map(normalizeColumnName));
-    return copyColumns.filter((column): column is string => !!column && !isCopyInsertOmittedColumn(databaseType.value, column, tableMeta.value, extractorOptions) && (!excludePrimaryKeys || !primaryKeySet.has(normalizeColumnName(column)))).length;
+    return copyColumns.filter((column): column is string => !!column && !isCopyInsertOmittedColumn(databaseType.value, column, tableMeta.value, extractorOptions) && (!excludePrimaryKeys || !primaryKeySet.has(normalizeColumnName(column)) || !isAutoGeneratedColumn(column, tableMeta.value))).length;
   }
 
   async function buildMongoExtractorInsert(extractorOptions: DataGridExtractorOptions, rowLimit?: number): Promise<string | undefined> {
@@ -1502,6 +1502,11 @@ function effectiveColumns(sourceColumns: Array<string | undefined> | undefined,
   return sourceColumns;
 }
 
+function isAutoGeneratedColumn(column: string, tableMeta: DataGridTableMeta | undefined): boolean {
+  const columnInfo = tableMeta?.columns?.find((item) => normalizeColumnName(item.name) === normalizeColumnName(column));
+  return /\b(auto_increment|autoincrement|identity)\b/.test(columnInfo?.extra?.toLowerCase() ?? "");
+}
+
 function isCopyInsertOmittedColumn(databaseType: DatabaseType | undefined, column: string, tableMeta: DataGridTableMeta | undefined, extractorOptions?: DataGridExtractorOptions): boolean {
   if (usesSyntheticRowIdKey(databaseType, [column])) return true;
   const columnInfo = tableMeta?.columns?.find((item) => normalizeColumnName(item.name) === normalizeColumnName(column));