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POLoop Through all tables in Mysql database and get Average of identical columns from each table in PHP
 

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  1. POLoop Through all tables in Mysql database and get Average of identical columns from each table in PHP
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    <p>Apologies in advance for the table structure...but I have multiple tables each pertaining to a different user's collected data. That data is collected continuously and just adds more rows as it happens... As I've said I have multiple tables with this similar structure and I would like to end up with an average value over 10 groups of 5 colums. (fb1 + fb2 + fb3 + fb4 + fb5)/5 = average for q's 1-5....</p> <p>The Columns each refer to an answer derived from a web application survey and are all valued from 1-10. These questions are in groups of 5 and are added together then devided by 5 for an average value....</p> <p>What I want is this, but looping over all of the columns from all of the tables and getting the same result on a grander scale.</p> <p>I have the formula for this per table as seen below, but how can i loop over an unset number of tables to output the same values taking into account values from multiple tables?</p> <pre><code> $query="SELECT AVG(fb1), AVG(fb2), AVG(fb3), AVG(fb4), AVG(fb5), AVG(fb6), AVG(fb7), AVG(fb8), AVG(fb9), AVG(fb10), AVG(fb11), AVG(fb12), AVG(fb13), AVG(fb14), AVG(fb15), AVG(fb16), AVG(fb17), AVG(fb18), AVG(fb19), AVG(fb20), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb5), AVG(fb21), AVG(fb22), AVG(fb23), AVG(fb24), AVG(fb25), AVG(fb26), AVG(fb27), AVG(fb28), AVG(fb29), AVG(fb30), AVG(fb31), AVG(fb32), AVG(fb33), AVG(fb34), AVG(fb35), AVG(fb36), AVG(fb37), AVG(fb38), AVG(fb39), AVG(fb40), AVG(fb41), AVG(fb42), AVG(fb43), AVG(fb44), AVG(fb45), AVG(fb46), AVG(fb47), AVG(fb48), AVG(fb49), AVG(fb50) FROM `".$_SESSION['table']."`"; $result=mysql_query($query); while($row = mysql_fetch_array($result)){ $row1 = $row['AVG(fb1)'] + $row['AVG(fb2)'] + $row['AVG(fb3)'] + $row['AVG(fb4)'] + $row['AVG(fb5)']; $row2 = $row['AVG(fb6)'] + $row['AVG(fb7)'] + $row['AVG(fb8)'] + $row['AVG(fb9)'] + $row['AVG(fb10)']; $row3 = $row['AVG(fb11)'] + $row['AVG(fb12)'] + $row['AVG(fb13)'] + $row['AVG(fb14)'] + $row['AVG(fb15)']; $row4 = $row['AVG(fb16)'] + $row['AVG(fb17)'] + $row['AVG(fb18)'] + $row['AVG(fb19)'] + $row['AVG(fb20)']; $row5 = $row['AVG(fb20)'] + $row['AVG(fb22)'] + $row['AVG(fb23)'] + $row['AVG(fb24)'] + $row['AVG(fb25)']; $row6 = $row['AVG(fb26)'] + $row['AVG(fb27)'] + $row['AVG(fb28)'] + $row['AVG(fb29)'] + $row['AVG(fb30)']; $row7 = $row['AVG(fb30)'] + $row['AVG(fb32)'] + $row['AVG(fb33)'] + $row['AVG(fb34)'] + $row['AVG(fb35)']; $row8 = $row['AVG(fb36)'] + $row['AVG(fb37)'] + $row['AVG(fb38)'] + $row['AVG(fb39)'] + $row['AVG(fb40)']; $row9 = $row['AVG(fb40)'] + $row['AVG(fb42)'] + $row['AVG(fb43)'] + $row['AVG(fb44)'] + $row['AVG(fb45)']; $row10 = $row['AVG(fb46)'] + $row['AVG(fb47)'] + $row['AVG(fb48)'] + $row['AVG(fb49)'] + $row['AVG(fb50)']; $row1Avg = $row1 / 5; $row2Avg = $row2 / 5; $row3Avg = $row3 / 5; $row4Avg = $row4 / 5; $row5Avg = $row5 / 5; $row6Avg = $row6 / 5; $row7Avg = $row7 / 5; $row8Avg = $row8 / 5; $row9Avg = $row9 / 5; $row10Avg = $row10 / 5; echo " all of those"; </code></pre> <p>p.s. As I've done everything without using this PDO syntax everyone is talking about, I would really appreciate any help apart from PDO solutions unless it's not possible.</p>
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    1. COHow would the multiple tables be named? And how would the tables relate to each other? Would each table have the same structure? (each one with 50 columns named in the same way)
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      1. USFrancisco Presencia
    2. COThey are all dynamically created when a new user is added to the database and named accordingly 'johnsmith', 'buddymcguy' etc. a combination of their first and last name. They don't relate to each other directly, apart from being similar in that they're attached under the same user or 'johnsmith'. Yes They all have the same structure and it involves fb1 - fb50 and several more fields relative to the entry.
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      1. POLoop Through all tables in Mysql database and get Average of identical columns from each table in PHP
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    3. COSo there are many tables with 1 row each one with that user's data? Or those are the 'creators' and each table has different rows from different users? I don't really understand the concept. Or I do but it doesn't make much sense...
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