chunks.awk

# Copyright (c) 2023 - 2024 Open Risk (https://www.openriskmanagement.com)
#
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# Script used in Step 1 of the Open Risk Academy Course
# https://www.openriskacademy.com/mod/page/view.php?id=743

BEGIN {
    RowCount = 0
    PartCount = 0
    # File = "2022Q2"
    # File = "2011Q1"
}
{
    if ($2 in chunk)
        print >> "./PARTS/"File"."chunk[$2]".part.csv"
    else {
        chunk[$2] = PartCount
        print > "./PARTS/"File"."chunk[$2]".part.csv"
    }
    if (RowCount % 100000 == 0)
        PartCount++
    RowCount++
}
END {
    for (var in chunk)
        print var ": " chunk[var]
}