Dynamic select list items based on a lookup column

[Jean_Pierre_Traets]

Dear @Dylan_Wu,

Thanks sharing your doc, it makes it more easy to understand your case:

Please have a look at the embedded doc and see the formula.
I added also my approach, when:

• A = 1, 2
• B = 3, 4
• C = 5, 6

Just to add them as a list

[Feature Request] Relationship Column (alongside Lookup Column)

Hey @ABp and @GJ_Roelofs, it’s true that Coda doesn’t have editable bi-directional lookups yet, but we do have easy adding of bi-directional lookup columns without having to type formulas. Here’s a quick GIF of that in action: https://cl.ly/b2cdb21a43af/Screen%20Recording%202020-01-13%20at%2003.12%20PM.gif The column won’t add to table Lookup B automatically when you insert the lookup column in table Lookup A, but you can do it yourself with only two clicks.