小编Rav*_*dra的帖子

我试图通过web api将SNS messeges发送到android.从http://aws.amazon.com/developers/getting-started/php/下载并安装了SDK

运行sample.php时出现以下错误:

Fatal error: Uncaught exception 'Aws\Common\Exception\InstanceProfileCredentialsException' with message 'Error retrieving credentials from the instance profile metadata server. When you are not running inside of Amazon EC2, you must provide your AWS access key ID and secret access key in the "key" and "secret" options when creating a client or provide an instantiated Aws\Common\Credentials\CredentialsInterface object. ([curl] 28: Connection timed out after 5016 milliseconds [url] http://169.254.169.254/latest/meta-data/iam/security-credentials/)' in C:\xampp\htdocs\aws-php\vendor\aws\aws-sdk-php\src\Aws\Common\InstanceMetadata\InstanceMetadataClient.php:85 Stack trace: #0 C:\xampp\htdocs\aws-php\vendor\aws\aws-sdk-php\src\Aws\Common\Credentials\RefreshableInstanceProfileCredentials.php(52): Aws\Common\InstanceMetadata\InstanceMetadataClient->getInstanceProfileCredentials() #1 C:\xampp\htdocs\aws-php\vendor\aws\aws-sdk-php\src\Aws\Common\Credentials\AbstractRefreshableCredentials.php(54): Aws\Common\Credentials\Refreshable in …

根据我的查询:

SELECT SQRT((D_o_latitude - T_s_lat)^ 2 +(D_o_longitude - T_s_long)^ 2)/0.00001 FROM [datasetName.tableName]

我收到错误错误:函数SUBTRACT中的参数类型不匹配:'D_o_latitude'是类型字符串,'T_s_lat'是类型字符串

所以让我知道我们可以将查询中的字符串类型转换为浮点数,例如转换数据类型,我无法更改数据类型

如果我有一个字符串说，我们想运行一个查询，该查询不返回给定字符串中的任何字符：孟买，Bandra（西），孟买，Baitul Sharaf，105 Hill Road，我想在上面的字符串中不算“，”（在上述情况3）

请参阅我的问题的参考文献。我 想在BigQuery中实现一个字符在Java字符串中出现一个字符的次数