https://preprod.theatre-contemporain.net/contacts/Bain-Public/?path=contacts%2FBain-Public

id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE c const PRIMARY PRIMARY 4 const 1
1 SIMPLE sc index_merge idnew, idcontact idnew, idcontact 4, 5 1 Using intersect(idnew, idcontact); Using where