You can check a whether a column exists or not by if(Schema::hasColumn('users','email')) ;//check whether users table has email column{//your logic} Level 1 ilmoralito Posted 8 years ago Thanks@tangoGright answer! Level 2 bgarrison25 ...
$results = DB::table('table1') ->whereExists(function ($query) { $query->select(DB::raw(1)) ->from('table2') ->whereRaw('table1.column = table2.column'); }) ->get(); 在上面的示例中,我们使用了两个表(table1和table2)来执行where exists查询。通过使用匿名函数,我们可以在子查询中...
1'state' => 'exists:states'Specifying A Custom Column Name1'state' => 'exists:states,abbreviation'Occasionally, you may need to specify a specific database connection to be used for the exists query. You can accomplish this by prepending the connection name to the table name using "dot" ...
Checking For Table / Column ExistenceYou may check for the existence of a table or column using the hasTable and hasColumn methods:1if (Schema::hasTable('users')) { 2 // The "users" table exists... 3} 4 5if (Schema::hasColumn('users', 'email')) { 6 // The "users" table ...
* @param string $column * @param string $direction * * @return \Illuminate\Database\Eloquent\Builder */publicfunctionscopeSort(Builder $query,$column,$direction){if(!in_array($column,$this->sortable)){return$query;}return$query->orderBy($column,$direction);}} ...
Exists (Database) File Filled Greater Than Greater Than Or Equal Image (File) In In Array Integer IP Address JSON Less Than Less Than Or Equal Max MIME Types MIME Type By File Extension Min Not In Not Regex Nullable Numeric Password ...
if (method_exists($grammar, $method = $command->type)) { $statements = $grammar->$method($table, $command); // Once we have the statements, we will cast them to an array even // though not all of the commands return an array just in case it ...
SQLSTATE[42S22]：未找到列：1054“where clause”中的未知列“user_email”（SQL：select * from ...
Laravel Version: 5.5.3 PHP Version: 7.1 Database Driver & Version: MariaDB 10.1.26 Description: php artisan migrate [Illuminate\Database\QueryException] SQLSTATE[42S01]: Base table or view already exists: 1050 Table 'users' already exist...
You should specify a controller@action into the action column of your permalink record.If there's a model bound to the permalink (entity), it will be passed as parameter to the controller action:class UserController { public function show($user) { return view('users.show', compact('user'...