$res = Db::table('staff')->field('id,salary')->where('id','>',1)
->group('salary')->having('salary > 5000')->select();
$sql = Db::table('staff')->getLastSql();
halt($sql);
$res = Db::table('staff')->field('id,salary')->where('id','>',1)
->group('salary')->having('salary > 5000')->select(false);
halt($res);
$res = Db::table('staff')->field('id,salary')->where('id','>',1)
->group('salary')->having('salary > 5000')->fetchSql(true)->select();
halt($res);
$res = Db::table('staff')->field('id,salary')->where('id','>',1)
->group('salary')->having('salary > 5000')->buildSql();
halt($res);
Db::listen(function($sql, $time, $explain){
// 记录SQL
echo $sql. ' ['.$time.'s]';
// 查看性能分析结果
dump($explain);
});
