Databases
StackOverflow2013
Postsdbo
POPHP Multi-Dimensional Array: Finding a multi-element sub-array match ... is there an alternate option to looping?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POPHP Multi-Dimensional Array: Finding a multi-element sub-array match ... is there an alternate option to looping?
    primarykey
    data
    text
    <p>We have some customer data which started in a separate data-store. I have a consolidation script to standardize and migrate it into our core DB. There are somewhere around 60,000-70,000 records being migrated.</p> <p>Naturally, there was a little bug, and it failed around row 9k.<br> My next trick is to make the script able to pick up where it left off when it is run again.</p> <p><br> <strong>FYI:</strong><br> The source records are pretty icky, and split over 5 tables by what brand they purchased ... IE:<br></p> <pre><code>create TABLE `brand1_custs` (`id` int(9), `company_name` varchar(112), etc...) create TABLE `brand2_custs` (`id` int(9), `company_name` varchar(112), etc...) </code></pre> <p>Of course, a given company name can (and does) exist in multiple source tables.</p> <p><br> <strong>Anyhow ...</strong> I used the ParseCSV lib for logging, and each row gets logged if successfully migrated (some rows get skipped if they are just too ugly to parse programatically). When opening the log back up with ParseCSV, it comes in looking like:</p> <pre><code>array( 0 =&gt; array( 'row_id' =&gt; '1', 'company_name' =&gt; 'Cust A', 'blah' =&gt; 'blah', 'source_tbl' =&gt; 'brand1_cust' ), 1 =&gt; array( 'row_id' =&gt; '2', 'company_name' =&gt; 'customer B', 'blah' =&gt; 'blah', 'source_tbl' =&gt; 'brand1_cust' ), 2 =&gt; array( 'row_id' =&gt; '1', 'company_name' =&gt; 'Cust A', 'blah' =&gt; 'blah', 'source_tbl' =&gt; 'brand2_cust' ), etc... ) </code></pre> <p><br> <strong>My current workflow</strong> is along the lines of:</p> <pre><code>foreach( $source_table AS $src){ $results = // get all rows from $src foreach($results AS $row){ // heavy lifting { } </code></pre> <p><br> <strong>My Plan</strong> is to check the <br> <code>$row-&gt;id</code> and <code>$src-&gt;tbl</code> combination <br> for a match in the <br> <code>$log[?x?]['row_id']</code> and <code>$log[?x?]['source_tbl']</code> combination.</p> <p>In order to achieve that, I would have to do a <code>foreach($log AS $xyz)</code> loop <strong><em>inside</em></strong> the <code>foreach($results AS $row)</code> loop, and skip any rows which are found to have already been migrated (otherwise, they would get duplicated).<br> That seems like a <strong>LOT</strong> of of looping to me.<br> What about when we get up around record # 40 or 50 thousand?<br> That would be 50k x 50k loops!!</p> <p><strong>Question:</strong><br> Is there a better way for me to check if a sub-array has a "row_id" and "source_tbl" match <em>other</em> than looping each time?</p> <p><br> <strong>NOTE:</strong> as always, if there's a <em><strong>completely</strong></em> different way I should be thinking about this, I'm open to any and all suggestions :)</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USmOrloff
    1. USmOrloff
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POPHP Multi-Dimensional Array: Finding a multi-element sub-array match ... is there an alternate option to looping?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POPHP Multi-Dimensional Array: Finding a multi-element sub-array match ... is there an alternate option to looping?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POPHP Multi-Dimensional Array: Finding a multi-element sub-array match ... is there an alternate option to looping?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COYou might wanna check out http://stackoverflow.com/questions/163336/slicing-a-multi-dimensional-php-array-across-one-of-its-elements
      singulars
      1. POPHP Multi-Dimensional Array: Finding a multi-element sub-array match ... is there an alternate option to looping?
      1. USIan
    2. COThat link put me on the scent of some VERY useful info. Thanks-a-bunch.
      singulars
      1. POPHP Multi-Dimensional Array: Finding a multi-element sub-array match ... is there an alternate option to looping?
      1. USmOrloff
 

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