Question

I have a table that has the following schema:

DATA | CAUSE_1 | TIME_1 | CAUSE_2 | TIME_2 | CAUSE_3 | TIME_3

The CAUSE.* field (VarChar) can not contain any string, and if so, the field TIME.* is 0.

I’m trying to create a query, but unfortunately without success, where I would have the result display in this form:

CAUSE | TOT_TIME | N_RIPET_CAUSE,

where:

• In CAUSE I have a list of what is contained in CAUSE_1 ... CAUSE_3,
• In TOT_TIME the sum of the values in TIME_1 ... TIME_3,
• In N_RIPET_CAUSE the number of repetitions of each CAUSE.

I hope I explained.

Answer 1

try this

 SELECT DATA ,CAUSE , TOT_TIME , N_RIPET_CAUSE
 FROM ( select DATA, CONCAT(`CAUSE_1`,' ',`CAUSE_2`, ' ', `CAUSE_3`) as CAUSE ,
 sum(`TIME_1` + `TIME_2` +`TIME_3`) as TOT_TIME ,
 (count(`CAUSE_1`)+count(`CAUSE_2`)+count(`CAUSE_3`)) as N_RIPET_CAUSE
 FROM your_table
 group by DATA
 ) t

SEE SQLFIDDLE DEMO

EDIT.

try this

     ( select DATA , `CAUSE_1` as CAUSE ,
     sum(`TIME_1` + `TIME_2` +`TIME_3`) as TOT_TIME ,
     (count(`CAUSE_1`)+count(`CAUSE_2`)+count(`CAUSE_3`)) as N_RIPET_CAUSE
     FROM Table1 
    group by DATA)
  union all
    (select DATA , `CAUSE_2` as CAUSE ,
    sum(`TIME_1` + `TIME_2` +`TIME_3`) as TOT_TIME ,
    (count(`CAUSE_1`)+count(`CAUSE_2`)+count(`CAUSE_3`)) as N_RIPET_CAUSE
    FROM Table1
    group by DATA   )
  union all

    (select DATA , `CAUSE_3` as CAUSE ,
    sum(`TIME_1` + `TIME_2` +`TIME_3`) as TOT_TIME ,
    (count(`CAUSE_1`)+count(`CAUSE_2`)+count(`CAUSE_3`)) as N_RIPET_CAUSE
    FROM Table1
    group by DATA   )

SQL DEMO HERE

EDIT:

try this due to your need

 select cause, sum(time) Tot_time, count(cause) N_Ripet_Cause
 from(
    select  cause_1 as cause, time_1 as time
    from Table1
    union all
    select  cause_2 as cause, time_2 as time
   from Table1
   union all
   select  cause_3 as cause, time_3 as time
   from Table1
 ) t
 group by cause

DEMO SQL FIDDLE