PHP MYSQL ranking gives first rank as a zero -

-

i presently working on php application ranks set of result mysql , displays them on web page. make 3 mysqli queries , display result in rank. seems fine @ times (without regular pattern), result displayed shows 0 first rank instead of 1, shows 1 though.

i have tried debugging code past month there no headways, have had rewrite code performs query on different occasions 0 0 problem still persists.

below code:

this first section:

$sql0       = "set @rank = 0, @prev_val3 = null;"; $pull_report_details5 = "select rank, score, student_number, subject_name, gender (                     select @rank := if(@prev_val3=score,@rank,@rank+1) rank, @prev_val3 := score score, student_number, subject_name, gender                     uploaded_results `subject_name` = '$subject_name' order score desc                     ) result"; mysqli_query($dbc, $sql0)or mysql_error(); $push_pull_report_details5 = mysqli_query($dbc, $pull_report_details5)or die("error pulling report details");

the second section:

$sql1       = "set @rank2 = 0, @prev_val2 = null;"; $pull_report_details3 = "select rank2, score, student_number, subject_name, gender (                     select @rank2 := if(@prev_val2=score,@rank2,@rank2+1) rank2, @prev_val2 := score score, student_number, subject_name, gender                     uploaded_results `subject_name` = '$subject_name' , `gender` = 'male' order score desc                     ) result"; mysqli_query($dbc, $sql1)or mysql_error(); $push_pull_report_details3 = mysqli_query($dbc, $pull_report_details3)or die(mysqli_error($dbc)."failure");

the third section:

$sql2       = "set @rank1 = 0, @prev_val = null;"; $pull_report_details4 = "select rank1, score, student_number, subject_name, gender (                     select @rank1 := if(@prev_val=score,@rank1,@rank1+1) rank1, @prev_val := score score, student_number, subject_name, gender                     uploaded_results `subject_name` = '$subject_name' , `gender` = 'female' order score desc                     ) result2"; mysqli_query($dbc, $sql2)or mysql_error(); $push_pull_report_details4 = mysqli_query($dbc, $pull_report_details4)or die("error pulling report details");

lastly, display 3 queries on 3 different tables.


Comments

Post a Comment

Popular posts from this blog

wordpress - (T_ENDFOREACH) php error -

-
creating wordpress website , i'm getting following php error: parse error: syntax error, unexpected 'endforeach' (t_endforeach) in /home/soralmedia/public_html/wp-content/themes/soral media/woocommerce/myaccount/my-orders.php on line 98 here's code file: <?php /** * orders * * shows recent orders on account page. * * template can overridden copying yourtheme/woocommerce/myaccount/my-orders.php. * * however, on occasion woocommerce need update template files , (the theme developer). * need copy new files theme maintain compatibility. try this. * little possible, happen. when occurs version of template file will. * bumped , readme list important changes. * * @see http://docs.woothemes.com/document/template-structure/ * @author woothemes * @package woocommerce/templates * @version 2.5.0 */ if ( ! defined( 'abspath' ) ) { exit; } $my_orders_columns = apply_filters( 'woocommerce_my_account_my_orders_columns', array( ...
Read more

Export Excel workseet into txt file using vba - (text and numbers with formulas) -

-
i new vba have developed code use in excel move text/numbers txt file. issue have 3 functions need go same txt file. when run first function has set fs = createobject("scripting.filesystemobject") set = fs.createtextfile(module1.nys45uploadfilename, true) a.writeline (str) a.close. the other 2 functions had save. set fs = createobject("scripting.filesystemobject") set = fs.savetextfile(module1.nys45uploadfilename, true) a.writeline (str) a.close. the first function go txt file, other 2 error object doesn't support property or method. when changed 3 create last function goes txt file. can not figure out word use in order make other 2 functions follow txt file in order keyed. the entire code follows private sub addrecord_click() on error goto errhandler module1.nys45uploadfilename = application.getsaveasfilename(filefilter:="textfiles (*.txt), *.txt") if module1.nys45uploadfilename = "false" exit sub ...
Read more

Using django-mptt to get only the categories that have items -

-
sample structure: all uppercase: category mixed case: item root ├── books │   ├── fiction │   │   └── classics │   └── non-fiction ├── clothing └── electronics ├── laptops ├── phones │   ├── apple │   │   ├── iphone 6 │   │   ├── iphone 6 plus │   │   ├── iphone 6s │   │   └── iphone 6s plus │   ├── motorola │   │   ├── moto g4 │   │   ├── moto g4 play │   │   ├── moto g4 plus │   │   └── moto x │   └── samsung └── tablets └── apple i'm trying have index page show "electronics" category. "clothing" category shouldn't show since it's empty , "books" category shouldn't show either since, although has child categories, child categories don't have items. similarly, "electronics" page should show "phones" category. "laptops" category shouldn't show since it's empty , "tablets" category shouldn't show either since...
Read more