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Re: convert real to numeric.

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On 10/18/18 3:28 AM, Alessandro Aste wrote:
Hi,



Postresql version: 10.5

I need to convert an SQL field from real to numeric, but I’m getting a strange behavior.

See the following query in preprod:

select amount, amount::numeric, amount::numeric(16,4), amount::varchar::numeric from mytable where id = 32560545;

Result:

17637.75, 17637.8, 17637.8000, 17637.75

As you can see, the conversion to ::numeric is truncating the number to just 1 decimal digit.

Also we tried to  change the schema definition of this table, from real to numeric, and the value was truncated.

Is the ::varchar::numeric workaround a good option in your opinion? Any other ideas to fix this issue?

select 17637.75::real::numeric;
numeric
---------
 17637.8

select 17637.75::float::numeric;
numeric
----------
 17637.75



Thank you,



--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx




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