declare exit handler for sqlexception
begin
  GET DIAGNOSTICS CONDITION 1
  @error_code = RETURNED_SQLSTATE,
  @error_msg = MESSAGE_TEXT;
  rollback;
  insert into log_sql (log) values(@error_msg);
  RESIGNAL;
end;

set trello_id = JSON_UNQUOTE(JSON_EXTRACT(params, '$.trello_id'));
set trello_name = JSON_UNQUOTE(JSON_EXTRACT(params, '$.trello_name'));
set customer = JSON_UNQUOTE(JSON_EXTRACT(params, '$.customer'));

start transaction;
  insert into proposal_trello (id, name, customer)
  values (trello_id, trello_name, customer);
commit;

declare exit handler for sqlexception
begin
  GET DIAGNOSTICS CONDITION 1
  @error_code = RETURNED_SQLSTATE,
  @error_msg = MESSAGE_TEXT;
  rollback;
  insert into log_sql (log) values(@error_msg);
  RESIGNAL;
end;