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Re: How to handle CASE statement with PostgreSQL without need for typecasting

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Good Morning,
 

NOTE:  From my research online, I found that typecasting works and also the error from the database suggests typecasting.

This statement works:

UPDATE t_update SET F1 = (CASE WHEN (?::timestamp(6) IS NULL ) THEN (?::timestamp(6) ) ELSE (?::timestamp(6) ) END)   


There is no option to convert the text parameter to a timestamp - you need to cast it - or use a parsing function or something else - but a text value cannot drop directly into a timestamp column. But it's not the case statement that is the issue - but rather the update - so you could shorten the statement a little with this.

UPDATE t_update SET F1 = (CASE WHEN (? IS NULL ) THEN (?) ) ELSE (?) ) END)::timestamp(6)

You don't need a timestamp until you place in in the column.

You also probably don't want a case statement here - not the standard option for this 

UPDATE t_update SET F1 = COALESCE(?, ?)::timestamp(6) with the first ? being the when above and the second being the else above. See here [1]

John


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