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Re: Difference between Well-Known Binary data format and MySql blob format
Posted by: dcarpenter
Date: November 13, 2005 11:13PM

Alexey Botchkov wrote:
> Presently, content of the GEOMETRY field is
> basically WKB with the SRID.
> But I wouldn't recommend to rely on that - we have
> plans to change that.
> If you need to get proper WKB of the object, you
> should use AsWKB function:
> SELECT AsWKB(geom_field) FROM geom_table;
>

If this SQL statement is passed to mysql_stmt_prepare(), the type of the column returned is a MYSQL_TYPE_VAR_STRING (rather than MYSQL_TYPE_GEOMETRY).

How do you then know that you should interpret the field data (ie. the MYSQL_BIND buffer field) as a well known binary formatted geometry ?

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Re: Difference between Well-Known Binary data format and MySql blob format
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November 13, 2005 11:13PM


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