05-30-2008
using awk
hi,
can anyone explain what is the use ^D in the below command
awk 'BEGIN { x = 0 } /^D/ { x++ } END {print x}'
thanks in advance
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END(7) PostgreSQL 9.2.7 Documentation END(7)
NAME
END - commit the current transaction
SYNOPSIS
END [ WORK | TRANSACTION ]
DESCRIPTION
END commits the current transaction. All changes made by the transaction become visible to others and are guaranteed to be durable if a
crash occurs. This command is a PostgreSQL extension that is equivalent to COMMIT(7).
PARAMETERS
WORK, TRANSACTION
Optional key words. They have no effect.
NOTES
Use ROLLBACK(7) to abort a transaction.
Issuing END when not inside a transaction does no harm, but it will provoke a warning message.
EXAMPLES
To commit the current transaction and make all changes permanent:
END;
COMPATIBILITY
END is a PostgreSQL extension that provides functionality equivalent to COMMIT(7), which is specified in the SQL standard.
SEE ALSO
BEGIN(7), COMMIT(7), ROLLBACK(7)
PostgreSQL 9.2.7 2014-02-17 END(7)