NoSQL operator: compute

Applies arbitrary AWK expressions to table data, using column names.

Usage: compute [options] [--] expression

Options:

    -i 'file'
      Read input from 'file' instead of STDIN.

    -h
      Display this help text.

    -N
      Remove header from output.

    -p
      Display the resulting AWK program instead of running it.


Notes:

This program is meant to be used interactively at the command-line,
where speed does not matter much. Programs and scripts should 
preferably use 'awktable' and the relevant native syntax.

The following names are reserved to the AWK language, and should not
be used to indicate column names:

BEGIN, END, break, continue, else, exit, exp, for, getline, if, in,
index, int, length, log, next, print, printf, split, sprintf, sqrt,
substr, while, and possibly others. See awk(1) for more on this.
Furthermore, the '_nosql_' prefix is reserved for internal NoSQL use,
and should never be used at the beginning of column names.

This NoSQL operator reads a table from STDIN and writes a
table to STDOUT.