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Mar 12, 2020 at 16:05 comment added Daniel W. This answer is confusing opposed to the other answer, especially with the quotes.
Feb 2, 2018 at 2:04 comment added Erwin Brandstetter This is a misunderstanding. The input string 'now()' looks similar to the function now() on the surface, but is not directly related otherwise. 'now' is a constant evaluating to the current transaction's start time. Trailing parens are ignored. The attempt to cast the strings 'CURRENT_TIMESTAMP' or 'transaction_timestamp()' to timestamp in similar fashion fails, because that's just nonsense. Neither is related to the corresponding functions.
Dec 9, 2016 at 16:49 history answered Vao Tsun CC BY-SA 3.0