https://preprod.theatre-contemporain.net/spectacles/L-Oiseau-migrateur/?path=spectacles%2FL-Oiseau-migrateur

id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE j3 const PRIMARY PRIMARY 4 const 1 Using index
1 SIMPLE j2 ref idcontent, idcontact idcontent 4 const 1 Using index
1 SIMPLE j1 eq_ref PRIMARY PRIMARY 4 theatreok_dev.j2.idcontact 1