09-15-2006
Quote:
Originally Posted by Raynon
I am trying to pass 2 shell variable's ("START" and "END") define earlier in the script to this awk statement, but i can't seem to pass it on. PLs help.
set START = xxxx
set END = yyyy
set selected_file = `awk '/$START/,/$END/' filename`
Try This
Quote:
awk -v ST=$START -v EN=$END '/ST/,/EN/' filename
Gaurav
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LEARN ABOUT CENTOS
start_transaction
START
TRANSACTION(7) PostgreSQL 9.2.7 Documentation 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
[ NOT ] DEFERRABLE
DESCRIPTION
This command begins a new transaction block. 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. This is the same as the 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 DEFERRABLE transaction_mode is a PostgreSQL language extension.
The SQL standard requires commas between successive transaction_modes, but for historical reasons PostgreSQL allows the commas to be
omitted.
See also the compatibility section of SET TRANSACTION (SET_TRANSACTION(7)).
SEE ALSO
BEGIN(7), COMMIT(7), ROLLBACK(7), SAVEPOINT(7), SET TRANSACTION (SET_TRANSACTION(7))
PostgreSQL 9.2.7 2014-02-17 START TRANSACTION(7)