Select IDs based on another column unique

[rvje]

Hello all,

for a unique list of tags {AHU-1A, AHU-1B, AHU-1C, AHU-1D, AHU-1E, AHU-1F, AHU-2A, AHU-2B} I want the list of IDs, it can be any ID.

For example if the ID is the row number the list will be: {1, 4, 5 ,6 ,7 ,9, 10, 11}

Is it posible?