tp5(thinkPHP5)框架数据库Db增删改查常见操作总结

$data = [
  'name_cn' => '张三',
  'name_en' => 'jack',
];
$res = Db::name('style')->insert($data);

INSERT INTO `tf_style` (`name_cn` , `name_en`) VALUES ('张三' , 'jack')

$data = [
  'name_cn' => '张三',
  'name_en' => 'jack',
];
$res = Db::name('style')->insertGetId($data);

$res = Db::name('style')->where('id',4)->update(['name_cn'=>'李四']);
UPDATE `tf_style` SET `name_cn` = '李四' WHERE `id` = 4；

$where = new Where();
$where['id'] = ['>',2];
$res = Db::name('style')->where($where)->update(['name_cn'=>'李四']);

$where[] = ['id','>',2];
$res = Db::name('style')->where($where)->update(['name_cn'=>'王五']);

$res = Db::name('style')->update(['name_cn'=>'王五','id'=>2]);

UPDATE `tf_style` SET `name_cn` = '王五' WHERE `id` = 2;

$res = Db::name('style')->where('id',2)->setField(['name_cn'=>'刘备']);
$res = Db::name('style')->where('id',2)->setField(['name_cn'=>'刘备','name_en'=>'LiuBei']);
UPDATE `tf_style` SET `name_cn` = '刘备' , `name_en` = 'LiuBei' WHERE `id` = 2

$res = Db::name('style')->where('id',2)->delete();
$res = Db::name('style')->delete('2');

$res = Db::name('style')->delete('2,3');

$res = Db::name('style')->delete([2,3,4]);

$data = Db::query('select * from tf_action');
$data = Db::query('select * from tf_action where id > ? and id < ?',[1,10]);
$sql = Db::getLastSql();

$data = Db::table('tf_action')->select();

$data = Db::name('action')->select();

$data = db('action')->select();

$data = db('action')->where('id','>',1)->where('id','<',9)->select();

$data = db('action')->where('id','>',20)->whereOr('id','<',9)->select();

$where = new Where();
$where['name'] = ['like','%户%'];
$where['id'] = ['>',1];
$data = db('action')->where($where)->select();
$where[] = ['name','like','%户%'];
$where[] = ['id','>',1];
$data = db('action')->where($where)->select();

$where = new Where();
$where['name'] = ['like','%户%'];
$where['id'] = ['>',1];
$data = db('action')->where($where)->limit(2,2)->order('id desc')->select();

$where = new Where();
$where['name'] = ['like','%户%'];
$where['id'] = ['>',1];
$data = db('action')->where($where)->limit(2,2)->order('id desc')->field('id,name')->select();

$where = new Where();
$where['name'] = ['like','%户%'];
$where['id'] = ['>',1];
$data = db('action')->where($where)->limit(2,2)->order('id desc')->field('id aid,name')->select();

$data = db('action')->where($where)->field('count(*) as count')->find();

$data = db('action')->where("name like '%户%' AND id > 1")->select();