Based on my experience learning Czech (not native at all, just interested):
- it's typically listed as a separate letter when writing out the alphabet
- but in practice it's typed out as "c h" and not as a single character
- it occupies its own place in Czech standard alphabetical order, my English-Czech dictionary has all the "ch" words after "h" (so interestingly in order to do a proper sort programmatically you need to possibly look 2 characters ahead)
- it's typically listed as a separate letter when writing out the alphabet
- but in practice it's typed out as "c h" and not as a single character
- it occupies its own place in Czech standard alphabetical order, my English-Czech dictionary has all the "ch" words after "h" (so interestingly in order to do a proper sort programmatically you need to possibly look 2 characters ahead)