variant transforms interpretation

[hze...@gmail.com]

Dear Cloud life sciences team

 I want to know the working of Variant Transforms

what I did I run 30 VCF files on Variant Transforms

I used the wildcard approach

which the run of these 30 VCF files it resulted in a table generated by big query  with name residue consisting of 2924 rows

I want to know those VCF files collectively generated table

what it represents most of the fields were empty

Chr1-Chr22  Chr x,Chr y empty

only table residue and sample_info were nonempty

also want to know for one VCF file it generates how many fields and rows

the key question of mine is that what the residue table represents

what is the significance of the residue table 

what is the significance of variant Transforms 

my other question can gvcf files can be processed by variant transforms

what is the role of Bigquery in   variant transforms

and my last question is what is Avro role in Variant Transforms,

How many Variants in one single 

VCF file

I have 30 VCF files,so how many variants i  have

best regards

Aaron

Thanks in Advance

your help will be highly appreciated

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