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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                有時候您需要修改一個存在的字段,例如:您可能想增加保存文本字段的長度。通過 change 方法讓這件事情變得非常容易!假設我們想要將字段 name 的長度從 25 增加到 50 的時候: ~~~ Schema::table('users', function($table) { $table->string('name', 50)->change(); }); ~~~ 另外也能將某個字段修改為允許 NULL: ~~~ Schema::table('users', function($table) { $table->string('name', 50)->nullable()->change(); }); ~~~
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