Solved Get first observation of dataset (1 Viewer)

[Ben_Entrew]

Hello all,

how can I get the first appearance of this dataset via SQL?

202012 0821 Ein
202106 0821 Mehr

Thank you in advance.

Kind regards,
Ben

 

[GPGeorge]

Can you clarify a bit? How do you define "...first appearance..."?
And what do you mean by "...dataset..."? What specific records are required?