Hello all
i have big test file that has allot of structure text something like this :
<foo1 *.html>
<blah action>
somthing 1
somthing 2
</blah>
</foo1 >
now i will like to insert 2 more lines of text below the <blah action>
so it will be like :
<foo1... (1 Reply)
Hi All,
I have a file that I need to be able to find a pattern match on a line, search that line for a text pattern, and replace that text.
An example of 4 lines in my file is:
1. MatchText_randomNumberOfText moreData ReplaceMe moreData
2. MatchText_randomNumberOfText moreData moreData... (4 Replies)
i am very new to UNIX
plz help me in this scenario
i have two text files as below
file1.txt
name=Rajakumar.
Discipline=Electronics and communication.
Designation=software Engineer.
file2.txt
name=Kannan.
Discipline=Mechanical.
Designation=CADD Design Engineer.
... (6 Replies)
hai
i am very new to unix.
i am having two files like this.
first.properties
cache.ZA.TL_CCY=SELECT trim(CCY_CODE)||trim(COUNTRY_CODE)||trim(CITY_CODE) AS... (4 Replies)
To trim 3rd field in for all the lines of a file and replace the modified string in that particular field.
For example i have a file called Temp.txt having content
Temp.txt
-----------------
100,234,M1234
400,234,K1734
300,345,T3456
----------------
So the modified file output should... (4 Replies)
Dear All,
i want to search particular string and want to replance next line value.
following is the test file.
search string is
tmp,???
,10:1 "???" may contain any 3 character it should remain the same and next line replace with ,10:50
tmp,123 --- if match tmp,??? then... (3 Replies)
Hello, I am using awk to match text in a tab separated field and am able to do so when matching the exact word. My problem is that I would like to match any sequence of text in the tab-separated field without having to match it all. Any help will be appreciated. Please see the code below.
awk... (3 Replies)
I need to search the file using strings "Request Type" , " Request Method" , "Response Type" and by using result set find the xml tags and convert into a single line?. below are the scenarios.
Cat test
Nov 10, 2012 5:17:53 AM
INFO: Request Type
Line 1.... (5 Replies)
Hi,
Need your help for this scripting issue I have. I am not really good at this, so seeking your help.
I have a file looking similar to this:
Hello, i am human and name=ABCD.
How are you?
Hello, i am human and name=PQRS.
I am good.
Hello, i am human and name=ABCD.
Good bye.
Hello, i... (12 Replies)
Hi Everyone,
I have a requirement in ksh where i have a set of files in a directory. I need to search each and every file if a particular string is present in the file, delete that line and replace that line with another string expression in the same file.
I am very new to unix. Kindly help... (10 Replies)
Discussion started by: Pradhikshan
10 Replies
LEARN ABOUT REDHAT
begin
BEGIN(7) SQL Commands BEGIN(7)NAME
BEGIN - start a transaction block
SYNOPSIS
BEGIN [ WORK | TRANSACTION ]
INPUTS
WORK
TRANSACTION
Optional keywords. They have no effect.
OUTPUTS
BEGIN This signifies that a new transaction has been started.
WARNING: BEGIN: already a transaction in progress
This indicates that a transaction was already in progress. The current transaction is not affected.
DESCRIPTION
By default, PostgreSQL executes transactions in unchained mode (also known as ``autocommit'' in other database systems). In other words,
each user statement is executed in its own transaction and a commit is implicitly performed at the end of the statement (if execution was
successful, otherwise a rollback is done). BEGIN initiates a user transaction in chained mode, i.e., all user statements after BEGIN com-
mand will be executed in a single transaction until an explicit COMMIT [commit(7)] or ROLLBACK [rollback(7)]. Statements are executed more
quickly in chained mode, because transaction start/commit requires significant CPU and disk activity. Execution of multiple statements
inside a transaction is also useful to ensure consistency when changing several related tables: other clients will be unable to see the
intermediate states wherein not all the related updates have been done.
The default transaction isolation level in PostgreSQL is READ COMMITTED, wherein each query inside the transaction sees changes committed
before that query begins execution. So, you have to use SET TRANSACTION ISOLATION LEVEL SERIALIZABLE just after BEGIN if you need more rig-
orous transaction isolation. (Alternatively, you can change the default transaction isolation level; see the PostgreSQL Administrator's
Guide for details.) In SERIALIZABLE mode queries will see only changes committed before the entire transaction began (actually, before
execution of the first DML statement in the transaction).
Transactions have the standard ACID (atomic, consistent, isolatable, and durable) properties.
NOTES
START TRANSACTION [start_transaction(7)] has the same functionality as BEGIN.
Use COMMIT [commit(7)] or ROLLBACK [rollback(7)] to terminate a transaction.
Refer to LOCK [lock(7)] for further information about locking tables inside a transaction.
If you turn autocommit mode off, then BEGIN is not required: any SQL command automatically starts a transaction.
USAGE
To begin a user transaction:
BEGIN WORK;
COMPATIBILITY
SQL92
BEGIN is a PostgreSQL language extension. There is no explicit BEGIN command in SQL92; transaction initiation is always implicit and it
terminates either with a COMMIT or ROLLBACK statement.
Note: Many relational database systems offer an autocommit feature as a convenience.
Incidentally, the BEGIN keyword is used for a different purpose in embedded SQL. You are advised to be careful about the transaction seman-
tics when porting database applications.
SQL92 also requires SERIALIZABLE to be the default transaction isolation level.
SQL - Language Statements 2002-11-22 BEGIN(7)