How can you delete a row if a certain column is bigger than a certain number?
I have the following input:
20080709 20081222 95750 1 0 0.02 94.88
20080709 20081222 95750 2 0 0.89 94.88
20080709 20081222 9575 1 0 0 94.88
20080709 20081222 9575 2 0 0 94.88
20080709 20081222 9587.5 1 0 0... (1 Reply)
Is there anyway to use awk to add a first column to my data that automatically goes from 1 to n , where n is the numbers of my rows?:confused: (4 Replies)
This is the source file, we called it errorlist.out
196 server_a server_unix_2 CD
196 server_b server_win_1 CD
196 server_c server_win_2 CD
196 server_bd server_unix_2 CD
196 server_d server_unix_2 CD
196 server_es server_win_1 CD
196 ... (14 Replies)
Hi,
I want to print column value based on row number say multiple of 8.
Input file:
line 1 67 34
line 2 45 57
. . .
. . .
line 8 12 46
. . .
. . .
line 16 24 90
. . .
. . .
line 24 49 67
Output
46
90
67 (2 Replies)
Hi,
I have a file which consists of two columns but the first one can be varying in length like
123456789 0abcd
123456789 0abcd
4015 0 0abcd
5000 0abcd
I want to go through the file reading each line, count the number of characters in the first column and delete... (2 Replies)
Hello,
I have a very large file for which I would like to remove all rows for which the value of columns 2-5 is zero.
For instance I would like this file:
contig1, 0, 0, 0, 0
contig2, 1, 3, 5, 0
contig3, 0, 0, 0, 0
contig4, 0, 5, 6, 7
To become this file:
contig2, 1, 3, 5,0 ... (17 Replies)
Hi everyone,
I have a data file in which the data is stored in event blocks. What I would like to get is that the same file with every data row starting with the number of event block. So here is two event blocks from my file:
<event>
-2 -1 0 0 0 501 0.00000000000E+00
... (2 Replies)
I want to split this with every 5 or 50 depend on how much data the file will have. And remove the comma on the end
Source file will have
001,0002,0003,004,005,0006,0007,007A,007B,007C,007E,007F,008A,008C
Need Output from every 5 tab and remove the comma from end of each row
... (4 Replies)
Dear UNIX experts,
I'm a command line novice working on a Macintosh computer (Bash shell) and have neither found advice that is pertinent to my problem on the internet nor in this forum.
I have hundreds of .csv files in a directory. Now I would like to copy the subset of files that contains... (8 Replies)
Hello,
I have this table:
chr1_16857_17742 - chr1 17369 17436 "ENST00000619216.1"; "MIR6859-1"; - 67
chr1_16857_17742 - chr1 14404 29570 "ENST00000488147.1"; "WASH7P"; - 885
chr1_16857_18061 - chr1 ... (5 Replies)
Discussion started by: coppuca
5 Replies
LEARN ABOUT PHP
pdostatement.fetchcolumn
PDOSTATEMENT.FETCHCOLUMN(3) 1 PDOSTATEMENT.FETCHCOLUMN(3)PDOStatement::fetchColumn - Returns a single column from the next row of a result set
SYNOPSIS
public mixed PDOStatement::fetchColumn ([int $column_number])
DESCRIPTION
Returns a single column from the next row of a result set or FALSE if there are no more rows.
Note
PDOStatement.fetchColumn(3) should not be used to retrieve boolean columns, as it is impossible to distinguish a value of FALSE from
there being no more rows to retrieve. Use PDOStatement.fetch(3) instead.
PARAMETERS
o $column_number
- 0-indexed number of the column you wish to retrieve from the row. If no value is supplied, PDOStatement.fetchColumn(3) fetches
the first column.
RETURN VALUES PDOStatement.fetchColumn(3) returns a single column in the next row of a result set.
Warning
There is no way to return another column from the same row if you use PDOStatement.fetchColumn(3) to retrieve data.
EXAMPLES
Example #1
Return first column of the next row
<?php
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
$sth->execute();
print("Fetch the first column from the first row in the result set:
");
$result = $sth->fetchColumn();
print("name = $result
");
print("Fetch the second column from the second row in the result set:
");
$result = $sth->fetchColumn(1);
print("colour = $result
");
?>
The above example will output:
Fetch the first column from the first row in the result set:
name = lemon
Fetch the second column from the second row in the result set:
colour = red
SEE ALSO PDO.query(3), PDOStatement.fetch(3), PDOStatement.fetchAll(3), PDO.prepare(3), PDOStatement.setFetchMode(3).
PHP Documentation Group PDOSTATEMENT.FETCHCOLUMN(3)