Reading selectively from a large csv file

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1

I have a large csv file with 3 columns: Symbol, Bid, Ask. This filecontains nearly 25000 records per Symbol and there are 5000 symbols.How do I read in this file selectively for just 1000 symbols?

2

.Q.fs
https://code.kx.com/trac/wiki/DotQ/DotQDotfs