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<article>
<h2>Q mode</h2>


<div><textarea id="code" name="code">
/ utilities to quickly load a csv file - for more exhaustive analysis of the csv contents see csvguess.q
/ 2009.09.20 - updated to match latest csvguess.q 

/ .csv.colhdrs[file] - return a list of colhdrs from file
/ info:.csv.info[file] - return a table of information about the file
/ columns are: 
/	c - column name; ci - column index; t - load type; mw - max width; 
/	dchar - distinct characters in values; rule - rule that caught the type
/	maybe - needs checking, _could_ be say a date, but perhaps just a float?
/ .csv.info0[file;onlycols] - like .csv.info except that it only analyses <onlycols>
/ example:
/	info:.csv.info0[file;(.csv.colhdrs file)like"*price"]
/	info:.csv.infolike[file;"*price"]
/	show delete from info where t=" "
/ .csv.data[file;info] - use the info from .csv.info to read the data
/ .csv.data10[file;info] - like .csv.data but only returns the first 10 rows
/ bulkload[file;info] - bulk loads file into table DATA (which must be already defined :: DATA:() )
/ .csv.read[file]/read10[file] - for when you don't care about checking/tweaking the <info> before reading 

\d .csv
DELIM:","
ZAPHDRS:0b / lowercase and remove _ from colhdrs (junk characters are always removed)
WIDTHHDR:25000 / number of characters read to get the header
READLINES:222 / number of lines read and used to guess the types
SYMMAXWIDTH:11 / character columns narrower than this are stored as symbols
SYMMAXGR:10 / max symbol granularity% before we give up and keep as a * string
FORCECHARWIDTH:30 / every field (of any type) with values this wide or more is forced to character "*"
DISCARDEMPTY:0b / completely ignore empty columns if true else set them to "C"
CHUNKSIZE:50000000 / used in fs2 (modified .Q.fs)