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Top Forums Shell Programming and Scripting Count number of unique values in each column of array Post 303011267 by Don Cragun on Tuesday 16th of January 2018 03:55:16 AM
Old 01-16-2018
You have given us a 57.9KB a.txt and a 575.5KB a1.txt (which is created by your script from a.txt and should, therefore, be smaller than a.txt but is instead almost 10 times larger). Your script also creates a2.txt from a1.vcf. But, you haven't shown us what the contents of a1.vcf look like.

Please show us:
  1. the a1.txt that should be created from the sample a.txt you provided in post #14,
  2. a sample a.vcf file and a description of its contents (explaining what the field separator is in this file, what fields are used from which lines), and
  3. the exact output you hope to produce from those sample a.txt and a.vcf files.
This User Gave Thanks to Don Cragun For This Post:
 

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PG_FETCH_ALL_COLUMNS(3) 												   PG_FETCH_ALL_COLUMNS(3)

pg_fetch_all_columns - Fetches all rows in a particular result column as an array

SYNOPSIS
array pg_fetch_all_columns (resource $result, [int $column]) DESCRIPTION
pg_fetch_all_columns(3) returns an array that contains all rows (records) in a particular column of the result resource. Note This function sets NULL fields to the PHP NULL value. PARAMETERS
o $result - PostgreSQL query result resource, returned by pg_query(3), pg_query_params(3) or pg_execute(3) (among others). o $column - Column number, zero-based, to be retrieved from the result resource. Defaults to the first column if not specified. RETURN VALUES
An array with all values in the result column. FALSE is returned if $column is larger than the number of columns in the result, or on any other error. EXAMPLES
Example #1 pg_fetch_all_columns(3) example <?php $conn = pg_pconnect("dbname=publisher"); if (!$conn) { echo "An error occurred. "; exit; } $result = pg_query($conn, "SELECT title, name, address FROM authors"); if (!$result) { echo "An error occurred. "; exit; } // Get an array of all author names $arr = pg_fetch_all_columns($result, 1); var_dump($arr); ?> SEE ALSO
pg_fetch_all(3). PHP Documentation Group PG_FETCH_ALL_COLUMNS(3)
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