Just dusted off an old version of the Byte UNIX Benchmarks from our old benchmark days at http://linux.silkroad.com/ and ran them against www.unix.com:
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BYTE UNIX Benchmarks (Version 3.11)
System -- Linux www 2.4.20 #2 Mon... (0 Replies)
sorry for my English
We'll report about Unix in my school, for Operating Systems subject...
with Installation demo....
I'm wondering if System V, which is from original developers AT&T still exist
and downloadable? because I cant find it anywhere...
then i found out that Solaris, MacOS... (4 Replies)
How do I make tar set the correct atime on the extracted version? The option --atime-preserve works just on the original, not on the extracted file.
The extracted files always have current time as atime, which is bad. (10 Replies)
I am completely new to shell scripting but have been assigned the task of creating several batch files to manipulate data. My final task requires me to find lines that have duplicates present then delete not only the duplicate but the original as well. The script will be used in a windows... (9 Replies)
Hi everyone,
This is my first post, but I have already received a lot of help from the forums in the past. Thanks!
I've searched the forums and my question is very similar to an earlier post entitled "Printing highest value from one column", which I am apparently not yet allowed to post a... (1 Reply)
Hi,
I have a requirement where I have to remove duplicates from a file based on the first 8 chars (It is fixed width file of 10 chars length) and whenever a duplicate row is found, its original row's last 2 chars should be updated to all 0's.
I thought of using
sort -u -k 1.1,1.8... (4 Replies)
Hi,
I have a huge text file with filenames which which looks like the following ie uniquenumber_version_filename:
e.g.
1234_1_xxxx
1234_2_vfvfdbb
343333_1_vfvfdvd
2222222_1_ggggg
55555_1_xxxxxx
55555_2_vrbgbgg
55555_3_grgrbr
What I need to do is examine the file, look for... (4 Replies)
Hi All,
Need help here, can you tell me the syntax to line grep the highest file version?
0 04-05-2016 08:00 lib/SBSSchemaProject.jar/schemas/
0 04-05-2016 08:00 lib/SBSSchemaProject.jar/schemas/airprice/
0 04-05-2016 08:00 ... (2 Replies)
Hi, I have a little issue right now.
I have a file with 4 columns
test0000002,10030010330,c_,218
test0000002,10030010330,d_,202
test0000002,10030010330,b_,193
test0000002,10030010020,c_,178
test0000002,10030010020,b_,170
test0000002,10030010330,a_,166
test0000002,10030010020,a_,151... (3 Replies)
Discussion started by: Ebk
3 Replies
LEARN ABOUT CENTOS
dblink_build_sql_update
DBLINK_BUILD_SQL_UPDATE(3) PostgreSQL 9.2.7 Documentation DBLINK_BUILD_SQL_UPDATE(3)NAME
dblink_build_sql_update - builds an UPDATE statement using a local tuple, replacing the primary key field values with alternative supplied
values
SYNOPSIS
dblink_build_sql_update(text relname,
int2vector primary_key_attnums,
integer num_primary_key_atts,
text[] src_pk_att_vals_array,
text[] tgt_pk_att_vals_array) returns text
DESCRIPTION
dblink_build_sql_update can be useful in doing selective replication of a local table to a remote database. It selects a row from the local
table based on primary key, and then builds a SQL UPDATE command that will duplicate that row, but with the primary key values replaced by
the values in the last argument. (To make an exact copy of the row, just specify the same values for the last two arguments.) The UPDATE
command always assigns all fields of the row -- the main difference between this and dblink_build_sql_insert is that it's assumed that the
target row already exists in the remote table.
ARGUMENTS
relname
Name of a local relation, for example foo or myschema.mytab. Include double quotes if the name is mixed-case or contains special
characters, for example "FooBar"; without quotes, the string will be folded to lower case.
primary_key_attnums
Attribute numbers (1-based) of the primary key fields, for example 1 2.
num_primary_key_atts
The number of primary key fields.
src_pk_att_vals_array
Values of the primary key fields to be used to look up the local tuple. Each field is represented in text form. An error is thrown if
there is no local row with these primary key values.
tgt_pk_att_vals_array
Values of the primary key fields to be placed in the resulting UPDATE command. Each field is represented in text form.
RETURN VALUE
Returns the requested SQL statement as text.
NOTES
As of PostgreSQL 9.0, the attribute numbers in primary_key_attnums are interpreted as logical column numbers, corresponding to the column's
position in SELECT * FROM relname. Previous versions interpreted the numbers as physical column positions. There is a difference if any
column(s) to the left of the indicated column have been dropped during the lifetime of the table.
EXAMPLES
SELECT dblink_build_sql_update('foo', '1 2', 2, '{"1", "a"}', '{"1", "b"}');
dblink_build_sql_update
-------------------------------------------------------------
UPDATE foo SET f1='1',f2='b',f3='1' WHERE f1='1' AND f2='b'
(1 row)
PostgreSQL 9.2.7 2014-02-17 DBLINK_BUILD_SQL_UPDATE(3)