cast type bytea to double precision

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От Amila Jayasooriya
Тема cast type bytea to double precision
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Msg-id CACqosVRyNYtE3gCA23_6Fkf5vNcv594a_Q8HxVNDAVFmGx+18Q@mail.gmail.com
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HI All,

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.

Thanks and Regards
 Amila Jayasooriya


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