Hi,
I have one huge record and know that each record in the file is 550 bytes long. How do I parse out individual records from the single huge record.
Thanks, (4 Replies)
Hi Folks,
I need to compare two very huge file ( i.e the files would contain a minimum of 70k records each) using awk or sed. The comparison needs to be done with respect to a 'key'. For example :
File1
**********
1234|TONY|Y75634|20/07/2008
1235|TINA|XCVB56|30/07/2009... (13 Replies)
Dear friends,
I receive the following files into a FTP location on a daily basis
-rw-r----- 1 guest ftp1 5021 Aug 19 09:03 CHECK_TEST_Extracts_20080818210000.zip
-rw-r----- 1 guest ftp1 2437 Aug 20 05:15 CHECK_TEST_Extracts_20080819210000.zip
-rw-r----- 1 guest ... (2 Replies)
Anyone can help for filter the uniq record for below example? Thank you very much
Input file
20090503011111|test|abc
20090503011112|tet1|abc|def
20090503011112|test1|bcd|def
20090503011131|abc|abc
20090503011131|bbc|bcd
20090503011152|bcd|abc
20090503011151|abc|abc... (8 Replies)
Hi folks,
Below is the content of a file 'tmp.dat', and I want to keep the uniq record (key by first column). However, the uniq record should be the last record.
302293022|2|744124889|744124889
302293022|3|744124889|744124889
302293022|4|744124889|744124889
302293022|5|744124889|744124889... (4 Replies)
I was given a data file that I need to split into multiple lines/records based on a key word. The problem is that it is 2.5GB or bigger and everything I try in perl or sed causes a Segmentation fault. Can someone give me some other ideas.
The data is of the form:... (5 Replies)
Hi,
I have the following command in place
nawk -F, '!a++' file > file.uniq
It has been working perfectly as per requirements, by removing duplicates by taking into consideration only first 3 fields. Recently it has started giving below error:
bash-3.2$ nawk -F, '!a++'... (17 Replies)
Hi,
I have a Huge 7 GB file which has around 1 million records, i want to split this file into 4 files to contain around 250k messages each.
Please help me as Split command cannot work here as it might miss tags..
Format of the file is as below
<!--###### ###### START-->... (6 Replies)
input.csv:
Field1,Field2,Field3,Field4,Field4
abc ,123 ,xyz ,000 ,pqr
mno ,123 ,dfr ,111 ,bbb
output:
Field2,Field4
123 ,000
123 ,111
how to fetch the values of Field4 where Field2='123'
I don't want to fetch the values based on column position. Instead want to... (10 Replies)
I was wondering if anyone could explain to me how to split a variable length EBCDIC file into seperate files based on the record key. I have the COBOL layout, and so I need to split the file into 13 different EBCDIC files so that I can run each one through a C++ converter I have, and get the... (11 Replies)
Discussion started by: hanshot1stx
11 Replies
LEARN ABOUT NETBSD
start_transaction
START TRANSACTION(7) SQL Commands START TRANSACTION(7)NAME
START TRANSACTION - start a transaction block
SYNOPSIS
START TRANSACTION [ transaction_mode [, ...] ]
where transaction_mode is one of:
ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED }
READ WRITE | READ ONLY
DESCRIPTION
This command begins a new transaction block. If the isolation level or read/write mode is specified, the new transaction has those charac-
teristics, as if SET TRANSACTION [set_transaction(7)] was executed. This is the same as the BEGIN [begin(7)] command.
PARAMETERS
Refer to SET TRANSACTION [set_transaction(7)] for information on the meaning of the parameters to this statement.
COMPATIBILITY
In the standard, it is not necessary to issue START TRANSACTION to start a transaction block: any SQL command implicitly begins a block.
PostgreSQL's behavior can be seen as implicitly issuing a COMMIT after each command that does not follow START TRANSACTION (or BEGIN), and
it is therefore often called ``autocommit''. Other relational database systems might offer an autocommit feature as a convenience.
The SQL standard requires commas between successive transaction_modes, but for historical reasons PostgreSQL allows the commas to be omit-
ted.
See also the compatibility section of SET TRANSACTION [set_transaction(7)].
SEE ALSO
BEGIN [begin(7)], COMMIT [commit(7)], ROLLBACK [rollback(7)], SAVEPOINT [savepoint(7)], SET TRANSACTION [set_transaction(7)]
SQL - Language Statements 2010-05-14 START TRANSACTION(7)