内容自动合并:

col0 col1 col2 col3
SuZhou 11111 22222 SuZhouCity
SuZhou 33333 44444 SuZhouCity
SuZhou 55555 66666 SuZhouCity
ShangHai 77777 88888 ShangHaiCity
ShangHai uuuuu hhhhh ShangHaiCity
ShangHai ggggg ccccc ShangHaiCity
GuangZhou ttttt eeeee GuangZhouCity
GuangZhou ppppp qqqqq GuangZhouCity

指定单列合并:

col0 col1 col2 col3
SuZhou 11111 22222 SuZhouCity
SuZhou 33333 44444 SuZhouCity
SuZhou 55555 66666 SuZhouCity
ShangHai 77777 88888 ShangHaiCity
ShangHai uuuuu hhhhh ShangHaiCity
ShangHai ggggg ccccc ShangHaiCity
GuangZhou ttttt eeeee GuangZhouCity
GuangZhou ppppp qqqqq GuangZhouCity

指定多列合并:

col0 col1 col2 col3
SuZhou 11111 22222 SuZhouCity
SuZhou 33333 44444 SuZhouCity
SuZhou 55555 66666 SuZhouCity
ShangHai 77777 88888 ShangHaiCity
ShangHai uuuuu hhhhh ShangHaiCity
ShangHai ggggg ccccc ShangHaiCity
GuangZhou ttttt eeeee GuangZhouCity
GuangZhou ppppp qqqqq GuangZhouCity