@aaedla You can use the below code.
ClearCollect(
col1,
{
CityId: 1,
Name: "A"
},
{
CityId: 2,
Name: "B"
}
);
ClearCollect(
col2,
{
Id: 3,
City: "C"
},
{
Id: 4,
City: "D"
}
);
ForAll(
RenameColumns(
col2,
"Id",
"CityId",
"City",
"Name"
) As c,
Patch(
col1,
Defaults(col1),
c
)
)