As per my knowledge,

CLOCK_TIMESTAMP value changes every time you call it even in the
same transaction

BEGIN
  ...
  CLOCK_TIMESTAMP()  -- Gives 2017-11-23 15:02:27.492867+05:30
  ...
  ...
  CLOCK_TIMESTAMP()  -- Gives different time as per current clock time
  ...
END;


CURRENT_TIMESTAMP
​is the time of ​
start of current transaction
​ and does not change in the same transaction.​


BEGIN
  ...
  CURRENT_TIMESTAMP() -- Gives 2017-11-23 15:01:40.171462+05:30
  ...
  ...
  CURRENT_TIMESTAMP() -- Gives same time as previous call
  ...
END;


​-- Murtuza​


On Thu, Nov 23, 2017 at 2:29 PM, Brahmam Eswar <brahmam1...@gmail.com>
wrote:

> What is difference between CLOCK_TIMESTAMP() and CURRENT_TIMESTAMP?
>
> Is there any specific use case to differentiate them .
> --
> Thanks & Regards,
> Brahmeswara Rao J.
>

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