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r3570
Obsidian | Level 7

I am having 2 datasets as below

 

dataset 1:

 

SUBJID VISIT
1002 Baseline
1002 DAY 1
1002 DAY 2
1002 DAY 3
1003 Baseline
1003 DAY 1
1003 DAY 2
1003 DAY 3
1004 Baseline
1004 DAY 1
1004 DAY 2
1004 DAY 3

 

dataset 2:

SUBJID VISIT
1002 Baseline
1002 DAY 1
1002 DAY 2
1003 Baseline
1003 DAY 1
1003 DAY 2
1003 DAY 3
1004 DAY 1
1004 DAY 2
1004 DAY 3

 

I want to separate out the records from dataset 1 for which there is no corresponding VISIT in dataset 2.

 

Need help with the code. Can anybody help ?

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