How to convert a set of 4 rows to columns in MySQL? -

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i have mysql question, , have no idea how resolve it.

i have following query:

select p.nombre, ti.tallerhorario_id persona p, talleresinscritos ti p.pasaporte = ti.pasaporte

at result this:

enter image description here

i'm looking make query in second column doesn't show row every "tallerhorario_id", every "nombre".

for example:

euclides | 7 | 24 | 32 | 48

liz lorena | 4 | 18 | 33 | 47

every person have 4 rows associated, without exceptions.

could me please?

thank you!

the simplest method put values in 1 column, using group_concat():

select p.nombre, group_concat(ti.tallerhorario_id) persona p join -- learn use proper explicit join syntax      talleresinscritos ti       on p.pasaporte = ti.pasaporte group p.nombre;

a comma-delimited list not asked for, might solve problem. if have counter, 1, 2, 3, , 4, second table, can using conditional aggregation:

select p.nombre,         max(case when counter = 1 ti.tallerhorario_id end) id1,        max(case when counter = 2 ti.tallerhorario_id end) id2,        max(case when counter = 3 ti.tallerhorario_id end) id3,        max(case when counter = 4 ti.tallerhorario_id end) id4 persona p join -- learn use proper explicit join syntax      talleresinscritos ti       on p.pasaporte = ti.pasaporte group p.nombre;

finally, if don't have counter, 1 way add 1 uses variables:

select p.nombre,         max(case when counter = 1 ti.tallerhorario_id end) id1,        max(case when counter = 2 ti.tallerhorario_id end) id2,        max(case when counter = 3 ti.tallerhorario_id end) id3,        max(case when counter = 4 ti.tallerhorario_id end) id4 persona p join -- learn use proper explicit join syntax      (select ti.*,              (@rn := if(@p = pasaporte, @rn + 1                         if(@p := pasaporte, 1, 1)                        )              ) counter       talleresinscritos ti cross join            (select @p := '', @rn := 0) params       order ti.pasaporte      ) ti      on p.pasaporte = ti.pasaporte group p.nombre;

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