[postgis-users] Error with ST functions

[Lorenzo Bottaccioli]

Hello,

I'm a new PostGis user so I might do some stupid questions. I have problem
with all most every ST function.

I'f I type this query:

*SELECT ST_BandIsNoData(rast) from mytable;*

 I get this result

*ERROR:  function st_bandisnodata(raster) does not exist*
*LINE 1: SELECT ST_BandIsNoData(rast) from mytable;*
*               ^*
*HINT:  No function matches the given name and argument types. You might
need to add explicit type casts.*

Any suggestion how to solve this?

I get the same error with many other functions.

tnx

Lorenzo
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