如何在联接和顺序中更新sql

Question

mi consult it's:

update enfermedades
    join
pacientes ON pacientes.id = enfermedades.paciente_id
    join
consultas ON consultas.paciente_id = pacientes.id
    join
signos_sintomas ON signos_sintomas.consulta_id = consultas.id 

set 
    enfermedades.diabetes = 1,
    bmi = signos_sintomas.imc_kg_m2,
    promedio_presion_sistolica = ((pa_de_pie_izquierda + pa_sentado_izquierda) / 2),
    microalbuminuria = 0,
    macroalbuminuria = 0,
    fibrilacion = 0,
    ecv = 0,
    duracion = 15,
    antiht = 0,
    diabetes = 0
where
    enfermedades.riesgo_diabetes_mellitus = 0
        and pacientes.situacion = 0
        and riesgo_diabetes_dano_organo_blanco = 0
        and signos_sintomas.created in (select 
            signos_sintomas.created,consultas.created
        from
            signos_sintomas
                join
            consultas ON consultas.id = signos_sintomas.consulta_id
                join
            pacientes ON pacientes.id = consultas.paciente_id
        where
            pacientes.id = pacientes.id
        order by signos_sintomas.created , consultas.created desc);

say

ERROR 1241 (21000): Operand should contain 1 column(s)

as consulting but with that descending order for columns created

Answer 1

You're using a sub-select in an IN clause that's returning multiple columns. Such a subselect can return only ONE column, which is used for the IN() comparison:

and signos_sintomas.created in (select 
            signos_sintomas.created,consultas.created
                    ^^^--field #1       ^---field #2
        from

if you return multiple columns, the DB server has no way of knowing WHICH column should be used for the IN() comparison.

Answer 2

change this

   and signos_sintomas.created in (select 
        signos_sintomas.created,consultas.created

to

   and signos_sintomas.created in (select 
        signos_sintomas.created

yould select just one column , not two .