fix(grid): allow generated insert columns

src/lib/dataGridSql.ts

@@ -14,6 +14,7 @@ export interface DataGridColumnInfo {
   name: string;
   is_nullable: boolean;
   column_default?: string | null;
+  extra?: string | null;
 }
 
 export interface DataGridSaveStatementOptions {
@@ -38,7 +39,11 @@ export function validateDataGridSave(options: DataGridSaveValidationOptions): st
   const notNullColumns = new Set(
     (options.columnInfo ?? [])
       .filter(
-        (column) => !column.is_nullable && !column.column_default && !isOracleRowId(options.databaseType, column.name),
+        (column) =>
+          !column.is_nullable &&
+          !column.column_default &&
+          !isAutoGeneratedColumn(column) &&
+          !isOracleRowId(options.databaseType, column.name),
       )
       .map((column) => normalizeColumnName(column.name)),
   );
@@ -214,6 +219,10 @@ function isOracleRowId(databaseType: DatabaseType | undefined, name: string | un
   return databaseType === "oracle" && name?.toUpperCase() === DBX_ROWID_COLUMN;
 }
 
+function isAutoGeneratedColumn(column: DataGridColumnInfo): boolean {
+  return /\b(auto_increment|autoincrement|identity)\b/i.test(column.extra ?? "");
+}
+
 function isNullWriteToNotNullColumn(
   databaseType: DatabaseType | undefined,
   notNullColumns: Set<string>,

tests/dataGridSql.test.ts

@@ -83,3 +83,18 @@ test("rejects NULL writes to non-null table columns", () => {
 
   assert.equal(error, 'Column "CREATED_AT" does not allow NULL.');
 });
+
+test("allows NULL for MySQL auto increment columns when inserting rows", () => {
+  const error = validateDataGridSave({
+    databaseType: "mysql",
+    columns: ["id", "name"],
+    columnInfo: [
+      { name: "id", is_nullable: false, column_default: null, is_primary_key: true, extra: "auto_increment" },
+      { name: "name", is_nullable: false, column_default: null, is_primary_key: false, extra: null },
+    ],
+    dirtyRows: [],
+    newRows: [[null, "Ada"]],
+  });
+
+  assert.equal(error, undefined);
+});