Re: Invalid input syntax for integer - Mailing list pgsql-novice

On Thu, 18 Aug 2011 11:07:58 -0400, Hans Edwin Winzeler <hewinzeler@gmail.com>
wrote:

Oops, forgot this one:

>    - How do I convert the varchar(20) that I have already imported into a
>    numeric value?

you need to:
* add a real/float/numeric/... wanted column to the table,
* use a function that:
     read a row,
     get the varchar(20) column,
     check for beginning with 0-[1-9],
     strip '0-' from the string,
     convert it into the wanted format,
     update table's real/float/numeric/... column with the result,
     loop until end of table.

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