SQL the same table, PHP query the sum of 2 columns of data and then output

Source: Internet
Author: User
Calculate the sum of order quantities

$query_num"SELECT SUM(order_num) from hcf_order_db where order_id = XXX";$arr_qn = mysqli_query($dbc,$query_num);list($sum)=mysqli_fetch_row($arr_qn);

Calculate the sum of the order Amount

$query_amount"SELECT SUM(order_amount) from hcf_order_db where order_id = XXX";$arr_qm = mysqli_query($dbc,$query_amount);list($sum2)=mysqli_fetch_row($arr_qm);

Then there is the PHP output:

<tdclass='font-songti'align='center'>
    
     echo$sum?>
    
     td><tdclass='font-cali'align='right'>
    
     echo$sum2?>
    
     td>

If the output is followed by a number of decimal places, you can set the value's property to Decimal (16,1) in SQL.
The next 1 is the reserved 1-bit decimal point.

The above describes the SQL the same table, PHP query the sum of 2 columns of data and then output, including the aspects of the content, I hope to be interested in PHP tutorial friends helpful.

  • Contact Us

    The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

    If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.