violation: 1452Cannotadd or update a childrow: a foreignkeyconstraintfails (`invoiceninja`.`#sq
l-418_46`, CONSTRAINT `payments_invoice_id_foreign` FOREIGNKEY (`in
violation: 1452Cannotadd or update a childrow: a foreignkeyconstraintfails (`meetmount`.`#sql-3c8_424`, CONSTRAINT `events_catego
ry_id_foreign` FOREIGNKEY (`categ
mysql> insert into customers (name, email, states_id) values('Thomas', 't@email.com', 2);
ERROR 1452(23000): Cannotadd or update a childrow: a foreignkeyconstraintfails (`crm`.`c
, 'Cannotadd or update a childrow: a foreignkeyconstraintfails (`test_current`.=4
error when running tests: IntegrityError: (1452, 'Cannotadd or update a child</em
旧表中填充了大量数据,但是当我尝试向引用旧表中的行的新表中添加一行时,我会得到一个Cannotadd or update a childrow: a foreignkeyconstraintfailsfrom users where username = 'test_user';| user_pk || 123766 |1 <