Hi,
I am a new learner of join command. Some result really make me confused.
Please kindly help me.
input:
file1:
LEO oracle engineer 210375
P.Jones Office Runner ID897
L.Clip Personl Chief ID982
S.Round UNIX admin ID6
file2:
Dept2C ID897 6 years
Dept5Z ID982 1 year
Dept3S ID6 2... (1 Reply)
Hi,
This is the second time for me to ask question about join command, i really feel sorry and shame. But it is very difficult to me.
Please kindly help on how to get my desired result(i give it below), in additon to tell me how, please also kindly tell me why.
Thanks in advanced.
... (1 Reply)
example sql:
select a.a1,b.b1,c.c1,d.d1,e.e1
from a
left outer join b on a.x=b.x
left outer join c on b.y=c.y
left outer join d on d.z=a.z
inner join a.t=e.t
I know how single outer or inner join works in sql.
But I don't really understand when there are multiple of them.
can... (0 Replies)
Hello,
My apologies if this has been posted elsewhere, I have had a look at several threads but I am still confused how to use these functions. I have two files, each with 5 columns:
File A: (tab-delimited)
PDB CHAIN Start End Fragment
1avq A 171 176 awyfan
1avq A 172 177 wyfany
1c7k A 2 7... (3 Replies)
Hi,
I have 20 tab delimited text files that have a common column (column 1). The files are named GSM1.txt through GSM20.txt. Each file has 3 columns (2 other columns in addition to the first common column).
I want to write a script to join the files by the first common column so that in the... (5 Replies)
Hello,
This post is already here but want to do this with another way
Merge multiples files with multiples duplicates keys by filling "NULL" the void columns for anothers joinning files
file1.csv:
1|abc
1|def
2|ghi
2|jkl
3|mno
3|pqr
file2.csv:
1|123|jojo
1|NULL|bibi... (2 Replies)
Discussion started by: yjacknewton
2 Replies
LEARN ABOUT OSX
extutils::mm_win32
ExtUtils::MM_Win32(3pm) Perl Programmers Reference Guide ExtUtils::MM_Win32(3pm)NAME
ExtUtils::MM_Win32 - methods to override UN*X behaviour in ExtUtils::MakeMaker
SYNOPSIS
use ExtUtils::MM_Win32; # Done internally by ExtUtils::MakeMaker if needed
DESCRIPTION
See ExtUtils::MM_Unix for a documentation of the methods provided there. This package overrides the implementation of these methods, not
the semantics.
Overridden methods
dlsyms
replace_manpage_separator
Changes the path separator with .
maybe_command
Since Windows has nothing as simple as an executable bit, we check the file extension.
The PATHEXT env variable will be used to get a list of extensions that might indicate a command, otherwise .com, .exe, .bat and .cmd
will be used by default.
init_DIRFILESEP
Using for Windows.
init_tools
Override some of the slower, portable commands with Windows specific ones.
init_others
Override the default link and compile tools.
LDLOADLIBS's default is changed to $Config{libs}.
Adjustments are made for Borland's quirks needing -L to come first.
init_platform
Add MM_Win32_VERSION.
platform_constants
constants
Add MAXLINELENGTH for dmake before all the constants are output.
special_targets
Add .USESHELL target for dmake.
static_lib
Changes how to run the linker.
The rest is duplicate code from MM_Unix. Should move the linker code to its own method.
dynamic_lib
Complicated stuff for Win32 that I don't understand. :(
extra_clean_files
Clean out some extra dll.{base,exp} files which might be generated by gcc. Otherwise, take out all *.pdb files.
init_linker
perl_script
Checks for the perl program under several common perl extensions.
xs_o
This target is stubbed out. Not sure why.
pasthru
All we send is -nologo to nmake to prevent it from printing its damned banner.
arch_check (override)
Normalize all arguments for consistency of comparison.
oneliner
These are based on what command.com does on Win98. They may be wrong for other Windows shells, I don't know.
cd dmake can handle Unix style cd'ing but nmake (at least 1.5) cannot. It wants:
cd dir1dir2
command
another_command
cd ....
max_exec_len
nmake 1.50 limits command length to 2048 characters.
os_flavor
Windows is Win32.
cflags
Defines the PERLDLL symbol if we are configured for static building since all code destined for the perl5xx.dll must be compiled with
the PERLDLL symbol defined.
perl v5.16.2 2012-10-11 ExtUtils::MM_Win32(3pm)