1、配置连接postgresql的连接信息:
$dev = [
'class' => 'yii\db\Connection',
'dsn' => 'pgsql:host=122.112.182.211;port=8000;dbname=sdk_info',
'username' => 'dbadmin',
'password' => 'Styl2018@',
'charset' => 'utf8',
// 'emulatePrepare' => true
];
return $dev;
2、Yii2目录下,models目录下新建model:
class TestSdkVsent extends Base
{
public static function getDb()
{
return \Yii::$app->dbDws;
}
public static function tableName()
{
return 'sdk_info.tb_sdk_vsent'; // TODO: Change the autogenerated stub
}
public static function test()
{
$find = static::find();
$result = $find->select('rtt')->limit(1) ->asArray()->one();
return $result;
}
}
3、备注:
$result = $find->select('rtt')->limit(1)->asArray()->one(); 查询到一条数据返回
解析结果:``SELECT * FROM "sdk_info"."tb_sdk_vsent" LIMIT 1
$result = $find->select('rtt')->asArray()->one(); 会查询所有的数据返回一条
解析结果:SELECT "rtt" FROM "sdk_info"."tb_sdk_vsent"
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