Hi there.   I would like to concat all the values of a repetitive key and put all of them as the value of one unique key with the same name. The input would be like:   { "main": "id;Date;Time;Trigger_time_open;Trigger_time_close;Door;Door_Cycle;Motor_current;Motor_voltage;DLS;DCS;Inclinometer;Temperature" }, { "main": "00000;2020/7/18;04:53:37.211;04:53:37.524;04:53:51.847;01;36688;12.062867;0.000000;-1;-1;12.078014;26.303200" }, { "main": "00001;;04:53:37.212;;;;;12.064088;0.000000;-1;-1;;" }     An the output something like:   { "main":"id;Date;Time;Trigger_time_open;Trigger_time_close;Door;Door_Cycle;Motor_current;Motor_voltage;DLS;DCS;Inclinometer;Temperature00000;2020/7/18;04:53:37.211;04:53:37.524;04:53:51.847;01;36688;12.062867;0.000000;-1;-1;12.078014;26.30320000001;;04:53:37.212;;;;;12.064088;0.000000;-1;-1;;" }     I have been trying with join and concat, but I'm completely new to Jolt transformations, and it's been a pain to find the way.   As you can see, the result would be a big string containing all the records of a csv.   thank you very much for your help. ... View more