I am trying to assign a awk array for further processing later in the script. I can't seem to figure it out. If someone could look at this and help me, I would very much appreciate it.
Thanks in Advance.
for ( x = 1 ; x <= Var ; x++ ) {
if ( x in varr ) {
... (2 Replies)
Hi,
i want awk to read a file and place it's content into two arrays. When trying to read these arrays with a "for a in ${source_path} "-Loop it gives the right result. But when trying to access directly (/bin/echo ${source_path}) it doesn't work.
I read "all "the awk threads in this forum and... (6 Replies)
Is there a way to retain the awk array in the shell.
My requirement
file a.txt
A B Count
10 1 25
10 2 20
10 3 21
11 1 20
11 2 22
12 2 40
12 3 15
A and B are my variables and count... (6 Replies)
I want to ask the user to enter an X amount of file names. I want to put those names into an array and then loop back through them to verify they are in the directory. 1st- How would I assign the value to an array and what is the correct syntax. 2nd- how would i reference that array after I... (3 Replies)
file.txt : is delimiter:
abc:def:ghi
jkl:mno: pqr
123:456:789
if I do the cut command, and cut the first column, and echo it out
I will get the output:
abc
jkl
123
How can I assign the column of text that I've cut into Array?
e.g If I were to echo array array it will output as:... (9 Replies)
Hi,
I have a piece of code as follows:
i=0
while read LINE
do
var = "$LINE"
i=$((i+1))
echo "${var}"
done < file
I want to assign value to the array var.
However, when i execute the script i get a error.
Please can you help me know what i am missing.
I ultimately want to... (2 Replies)
Hi all ,
I have a string like para1#para2#para3
i want to assign para1 as first element para2 as second and so on
i tried
IFS=#
set -A array para1#para2#para3
echo ${array}
para1 para2 para3
i want echo ${array}
para1 (2 Replies)
Hi,
I have a 10*10 two dimensional array. How do I assign value to all it's 100 elements at once? I don't want to open two for loops and assign one by one.
Thanks,
Shuri (1 Reply)
Discussion started by: shurimano
1 Replies
LEARN ABOUT CENTOS
begin
BEGIN(7) PostgreSQL 9.2.7 Documentation BEGIN(7)NAME
BEGIN - start a transaction block
SYNOPSIS
BEGIN [ WORK | TRANSACTION ] [ transaction_mode [, ...] ]
where transaction_mode is one of:
ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED }
READ WRITE | READ ONLY
[ NOT ] DEFERRABLE
DESCRIPTION
BEGIN initiates a transaction block, that is, all statements after a BEGIN command will be executed in a single transaction until an
explicit COMMIT(7) or ROLLBACK(7) is given. By default (without BEGIN), PostgreSQL executes transactions in "autocommit" mode, that is,
each 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).
Statements are executed more quickly in a transaction block, because transaction start/commit requires significant CPU and disk activity.
Execution of multiple statements inside a transaction is also useful to ensure consistency when making several related changes: other
sessions will be unable to see the intermediate states wherein not all the related updates have been done.
If the isolation level, read/write mode, or deferrable mode is specified, the new transaction has those characteristics, as if SET
TRANSACTION (SET_TRANSACTION(7)) was executed.
PARAMETERS
WORK, TRANSACTION
Optional key words. They have no effect.
Refer to SET TRANSACTION (SET_TRANSACTION(7)) for information on the meaning of the other parameters to this statement.
NOTES
START TRANSACTION (START_TRANSACTION(7)) has the same functionality as BEGIN.
Use COMMIT(7) or ROLLBACK(7) to terminate a transaction block.
Issuing BEGIN when already inside a transaction block will provoke a warning message. The state of the transaction is not affected. To nest
transactions within a transaction block, use savepoints (see SAVEPOINT(7)).
For reasons of backwards compatibility, the commas between successive transaction_modes can be omitted.
EXAMPLES
To begin a transaction block:
BEGIN;
COMPATIBILITY
BEGIN is a PostgreSQL language extension. It is equivalent to the SQL-standard command START TRANSACTION (START_TRANSACTION(7)), whose
reference page contains additional compatibility information.
The DEFERRABLE transaction_mode is a PostgreSQL language extension.
Incidentally, the BEGIN key word is used for a different purpose in embedded SQL. You are advised to be careful about the transaction
semantics when porting database applications.
SEE ALSO COMMIT(7), ROLLBACK(7), START TRANSACTION (START_TRANSACTION(7)), SAVEPOINT(7)PostgreSQL 9.2.7 2014-02-17 BEGIN(7)