How to change decimal separator of a column in PostgreSQL

Question

My problem is that the column storing decimal values saves them as eg. 24.55 instead of 24,55. Having a comma there is how I need the data to be stored.

I'm connecting from a software through PostGIS to my database, but the software is very inflexible in terms of naming columns, size of strings etc... That means I can only change '.' to ',' to make it work. I would appreciate any help.

I'm using PostgreSQL 8.4.5.

Answer 1

如果您可以在输出软件中使用文本，则：

replace(your_data::text, '.', ',') as decimal_with_comma