I have a database column which type is bytea. It contains floats converted as byte array (4 bytes per one float) and encoding is Escape. I would be able to get corresponding bytea string using substring function.
My question is how can I convert bytea string to float inside a SQL function. Earlier I converted to float in C# side. I used dataReader.getByte method to retrieve bytes and then Converted to float using BitConverter.ToSingle (.Net build in class) method.
Now I can't use intermediate component as Npqsql driver. I want SQL to directly convert bytea into floats and return the corresponding number when execute a query from 3rd party application.
bytea_string::float gives exception as cannot cast type bytea to double precision