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hi,

first, assume that i have two datasets,as below:

dataset: b dataset:c

var: pano $ var1 pano $ var2

obs: a 10 a 111

a 20 a 222

c 30 a 333

i want to create a dataset bc from dataset b and c,as below:

dataset: bc

var: pano $ var1 var2

obs: a 10 111

a 10 222

a 10 333

a 20 111

a 20 222

a 20 333

c 30 .

my question is :how to get the dataset bc by the SAS software?

thanks a lot!

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