Hi there, I have a text file with several colums separated by "|;#" I need to search the file extracting all columns starting with the value of "1" or "2" saving in a separate file just the first 7 columns of each row maching the criteria, with replacement of the saparators in the nearly created file from "|;#" into ";".
Just for instance this is what I have :
What I need in a separate file is this :
Thanks a lot in advance for your help
Nino
Last edited by vbe; 09-11-2009 at 01:31 PM..
Reason: code tags added
Hi,
I'm working hard on SQL and I came across a hurdle I'm hoping you can help me out with.
I have two tables
table1
headers: chrom start end name score strand
11 9720685 9720721 U0 0 +
21 9721043 9721079 U0 0 -
1 9721093 9721129 U0 0 +
20 ... (2 Replies)
Hi,
I am trying to use AWK to do some editing and formating of large tables of numbers and I am having trouble getting it to work. For brevities sake, I won't show the whole table, but I have a sample set of code:
und$ awk '{($2+0) > 50;print $1}' temp
2000 147
2008 128
2002 100
1999 47... (2 Replies)
Hi,
I want a UNIX command that can filter out rows with certain criteria.
The file is tab deliminated. Row one is just a value. Basically what I want to do is select based on the name and character at the end (o). So lets lets say i want a row that has WashU and (o) then it would print... (2 Replies)
I have a file which contains five hundred thousand lines (500,000). I want to select lines of every 1000 lines from that file using AWK. I can think something like this in bash as below:
for lines in {0..500000..1000}
do
........
........
done
But I want to use AWK. I do not know how to... (4 Replies)
Hi
My pipe delimited .txt file contains rows with 10 columns.
Can anyone advise how I output to file only those rows with the letters ‘ci'
as the first 2 characters in the 3rd column ?
Many thanks (4 Replies)
Gurus,
From a file I need to remove duplicate rows based on the first column data but also we need to consider a date column where we need to keep the latest date (13th column).
Ex:
Input File:
Output File:
I know how to take out the duplicates but I couldn't figure out... (5 Replies)
HI all,
I have a simple challenge for you.. I have the following pipe delimited file
2345|98|1809||x|969|0
2345|98|0809||y|0|537
2345|97|9809||x|544|0
2345|97|0909||y|0|651
9685|98|7809||x|321|0
9685|98|7909||y|0|357
9685|98|7809||x|687|0
9685|98|0809||y|0|234
2315|98|0809||x|564|0
... (2 Replies)
Hello, everyone
I am beginner for shell programming. I want to print all lines that have the same values in first two columns
data:
a b 1 2
a a 3 4
b b 5 6
a b 4 6
what I expected is :
a a 3 4
b b 5 6
but I searched for one hour in... (2 Replies)
I have a rather convoluted script that I use to extract information from CSV files:
sed '1d' PeakTable.txt | awk -F ',' '!/Ladder/{ if ( $4 > 430 && $4 < 490 && $5 > 45 ) print $2, $5; else print $2, 0 }' | awk '{a+=$2}END{for(i in a){print i, a}}' | sed 's/\(\)\(\) /\10\2 /' | sort | awk... (4 Replies)
Discussion started by: Xterra
4 Replies
LEARN ABOUT CENTOS
dblink_fetch
DBLINK_FETCH(3) PostgreSQL 9.2.7 Documentation DBLINK_FETCH(3)NAME
dblink_fetch - returns rows from an open cursor in a remote database
SYNOPSIS
dblink_fetch(text cursorname, int howmany [, bool fail_on_error]) returns setof record
dblink_fetch(text connname, text cursorname, int howmany [, bool fail_on_error]) returns setof record
DESCRIPTION
dblink_fetch fetches rows from a cursor previously established by dblink_open.
ARGUMENTS
conname
Name of the connection to use; omit this parameter to use the unnamed connection.
cursorname
The name of the cursor to fetch from.
howmany
The maximum number of rows to retrieve. The next howmany rows are fetched, starting at the current cursor position, moving forward.
Once the cursor has reached its end, no more rows are produced.
fail_on_error
If true (the default when omitted) then an error thrown on the remote side of the connection causes an error to also be thrown locally.
If false, the remote error is locally reported as a NOTICE, and the function returns no rows.
RETURN VALUE
The function returns the row(s) fetched from the cursor. To use this function, you will need to specify the expected set of columns, as
previously discussed for dblink.
NOTES
On a mismatch between the number of return columns specified in the FROM clause, and the actual number of columns returned by the remote
cursor, an error will be thrown. In this event, the remote cursor is still advanced by as many rows as it would have been if the error had
not occurred. The same is true for any other error occurring in the local query after the remote FETCH has been done.
EXAMPLES
SELECT dblink_connect('dbname=postgres');
dblink_connect
----------------
OK
(1 row)
SELECT dblink_open('foo', 'select proname, prosrc from pg_proc where proname like ''bytea%''');
dblink_open
-------------
OK
(1 row)
SELECT * FROM dblink_fetch('foo', 5) AS (funcname name, source text);
funcname | source
----------+----------
byteacat | byteacat
byteacmp | byteacmp
byteaeq | byteaeq
byteage | byteage
byteagt | byteagt
(5 rows)
SELECT * FROM dblink_fetch('foo', 5) AS (funcname name, source text);
funcname | source
-----------+-----------
byteain | byteain
byteale | byteale
bytealike | bytealike
bytealt | bytealt
byteane | byteane
(5 rows)
SELECT * FROM dblink_fetch('foo', 5) AS (funcname name, source text);
funcname | source
------------+------------
byteanlike | byteanlike
byteaout | byteaout
(2 rows)
SELECT * FROM dblink_fetch('foo', 5) AS (funcname name, source text);
funcname | source
----------+--------
(0 rows)
PostgreSQL 9.2.7 2014-02-17 DBLINK_FETCH(3)