Databases
StackOverflow2013
Postsdbo
POComparing two mysql db tables/arrays in php and updating based on timestamp
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POComparing two mysql db tables/arrays in php and updating based on timestamp
    primarykey
    data
    text
    <p>Horrible title I know, I couldn't find a better way to articulate my problem.</p> <p>I searched through SO without success, but if the answer's already out there, feel free to link it and I will read it thoroughly.</p> <hr> <p>I'm building a book ordering system. People will order books throughout the month, and one large order arrives at the end of every month.</p> <p>Orders get recorded into an Order table with the following fields: </p> <pre><code>order_id, book_id, quantity, language, person_ordering, timestamp, month, year </code></pre> <p>When orders arrive, they are inputted into an Received table with the following fields:</p> <pre><code>book_id, quantity, language </code></pre> <p>Now suppose one person orders (2) copies of book 1. And another person orders (3). And another (5). For a grand total of (10). Then the order arrives and it only has 7 copies.</p> <p>I'm trying to write a script/function that will find out:</p> <ul> <li>Which persons will receive their copies of the book (it's first come first serve, so the people that ordered it first will have their order fulfilled first.</li> <li>If a person can only have their order partially fulfilled, to update the Order table (or possible a new Pending Orders table is needed?) to reflect that they have X amount still waiting to be fulfilled. Then the following month, their orders would be fulfilled first, again, based on date ordered.</li> </ul> <p>I thought about pulling the information from the Orders table based on time-stamp of when the order was made and sorting through it, then pulling the information out of the Received table and somehow comparing the two arrays and updating a third array? Or perhaps there's a simpler solution that I'm missing. </p> <p>If more information is needed, I will gladly provide. I've been pulling my hair out over this problem for 2 days straight. Any help would be appreciated.</p> <p>Thanks!</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USGeorge
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload