$sql = "SELECT ←普通のSQL文
FROM
WHERE " ;
DB::table('app_user_user AS uu')
->select( ~ ~
) ->leftJoin( DB::raw("( $sql ) AS sc ") , 'uu.id', '=', 'sc.user_id')
$juhuku = DB::table('issuers')
->orWhere(function($query) {
$query->where('tel', $this->tel[$this->j])
->where('user_id', '!=', $this->user_id);
})
->orWhere(function($query) {
$query->where('email', $this->email[$this->j])
->where('user_id', '!=', $this->user_id);
})->exists() ;
select exists(
select * from `issuers`
where (
`tel` = '230-0234-5432'
and `user_id` != 4604
)
or (
`email` = 'izumo@reqw.wer'
and `user_id` != 4604)
) as `exists`