php Laravel Migration将Null设置为exisiting列

Posted 2021-05-05

<?php


    public function up()
    {
        Schema::table('sla', function (Blueprint $table) {
            DB::statement('ALTER TABLE `sla` MODIFY `start` TIMESTAMP NULL DEFAULT NULL;');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('sla', function (Blueprint $table) {
            DB::statement('ALTER TABLE `sla` MODIFY `start` TIMESTAMP NOT NULL DEFAULT NOT NULL;');
        });
    }