My problem is I think simple.
I have 2 VCF files: A.vcf and B.vcf
A.vcf has 300,000 variants.
B.vcf has 3,000,000 variants.
I would like to compare A.vcf and B.vcf and return a boolean (TRUE/FALSE, 1/0) vector of length 300,000.
The vector should have TRUE if the entry of A is also in B. FALSE otherwise.
How can I achieve this please?