Convert Spatial Reference Identifier (SRID)

Hello,

I have a table with shapes of states of type st_geometry and format SRID0, which I think to have found out via select shape.st_asewkt() ...: The result shows "SRID0, POLYGON(...)". On the other hand, I have locations of type st_point and format SRID 4326.

When I now try to check, which location is in which state by a cross join " where location.st_within (shape) = 1" I get the error message, that SRID formats must not (yet) be mixed.

So I have the task to convert preferably the SRID0 shapes into SRID4326 format. Preferably because the locations arise from longitudes and latitudes and not from xy-coordinates.

Does anybody know how to proceed?

Thanks,

Ingo