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Transpose data from a mysql table


Transpose data from a mysql table

By : Tufik Chediak
Date : October 24 2020, 08:10 PM
I hope this helps you . I have a table in which the data are entered vertically by indicators as in the example below , Try this but I don't recommend:
code :
SELECT idcList,
       MAX(CASE WHEN ID = 1 THEN value END) `Apple`,
       MAX(CASE WHEN ID = 2 THEN value END) `Pears`,
       MAX(CASE WHEN ID = 3 THEN value END) `Orange`
from
  (
    SELECT ID,
           idcList,
           CASE idcList
             WHEN 'idc1' THEN idc1
             WHEN 'idc2' THEN idc2
             WHEN 'idc3' THEN idc3
             END value
    FROM mysql_test t
           CROSS JOIN
           (
             SELECT 'idc1' idcList
             UNION ALL
             SELECT 'idc2'
             UNION ALL
             SELECT 'idc3'
           ) c
  ) q
GROUP BY idcList
ORDER BY FIELD(idcList, 'idc1', 'idc2', 'idc3')


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MySQL transpose table

MySQL transpose table


By : Dorel Seicean
Date : March 29 2020, 07:55 AM
With these it helps When you need to count only a subset of the rows, use an expression that is NULL when you don't want to count. COUNT() ignores NULLs.
code :
SELECT action_type, DATE(timestamp) AS `timestamp`, 
  COUNT(CASE action_type WHEN 'click' THEN action_value END) AS `search`,
  COUNT(CASE action_type WHEN 'delete' THEN action_value END) AS `delete`,
FROM cohort_actions
GROUP BY action_type, DATE(timestamp);
How to transpose mysql table data using mysql query

How to transpose mysql table data using mysql query


By : Subin Joseph
Date : March 29 2020, 07:55 AM
With these it helps I would like to transpose attendance sql table as below , In MySQL, you would do this using conditional aggregation:
code :
select pname,
       sum(case when weekday = 'Monday' then days else 0 end) as M,
       . . .,
       sum(days) as Total
from  t
group by pname;
How to hide a table row that has an empty value, the transpose mysql

How to hide a table row that has an empty value, the transpose mysql


By : Rose Garay
Date : March 29 2020, 07:55 AM
To fix this issue I have a table from the database and I try to change the display field of row into columns, and I wanted to try to hide rows that have a null value. , You could check the value before printing the row
code :
foreach ($get_field as $key => $values) 
        {
           $line .= "<tr>\n";                  
                $line .= "\t<td>" . $key . "</td>\n" ; 
                foreach ($values as $cell) 
                {
                    if($cell > 0 ){     
                        echo $line."\t<td>" . $cell . "</td>\n</tr>\n"; 
                    }   
                }                       
            }
Trying to get transpose table in MYSQL

Trying to get transpose table in MYSQL


By : farhad darvishi
Date : March 29 2020, 07:55 AM
Hope that helps The below is the query used to get the transpose of the table. , Try the query below. I think you don't need to use sub-query
code :
SELECT
    MONTH,
    SUM(CASE WHEN YEAR = '2016-17' THEN item_amt ELSE 0 END) '2016-17', 
    SUM(CASE WHEN YEAR = '2017-18' THEN item_amt ELSE 0 END) '2017-18'
FROM dummy
WHERE TYPE = 'XYZ' AND
      party_code != 'Interunit' AND
      (item_acc_code='301010100001' OR item_acc_code='301010100002') AND
      (YEAR(inv_date)=YEAR(CURDATE()) OR YEAR(inv_date)=YEAR(DATE_SUB(CURDATE(), INTERVAL 1 YEAR))) 
GROUP BY MONTH
mySQL - transpose table and print only max values

mySQL - transpose table and print only max values


By : user2207612
Date : March 29 2020, 07:55 AM
may help you . I have below table and I can get the max values per DATE however I want to transpose it at the same time. , Pivot it like this:
code :
SELECT 
   TAIL, 
   MAX(CASE WHEN REPORT_ELEMENT = 'A' THEN DATE END) AS DATEA,
   MAX(CASE WHEN REPORT_ELEMENT = 'B' THEN DATE END) AS DATEB,
   MAX(CASE WHEN REPORT_ELEMENT = 'A' THEN VALUE END) AS VALUEA,
   MAX(CASE WHEN REPORT_ELEMENT = 'B' THEN VALUE END) AS VALUEB
FROM READING
GROUP BY TAIL
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