1	2	3
4	5	6
{"column1_renamed":"1","column2_renamed":"2","column3":"3"}
{"column1_renamed":"4","column2_renamed":"5","column3":"6"}
1	2	3
4	5	6
{"column1_renamed":"1","column2_renamed":"2","column3":"3"}
{"column1_renamed":"4","column2_renamed":"5","column3":"6"}