# insert into spatial_ref_sys VALUES (900913, 'EPSG', 900913, '', '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs');


gisdb=# select astext(transform(geomfromtext('POINT(116.78787 39.29983)',4326),900913));
                 astext                  
-----------------------------------------
 POINT(13000766.219231 4764711.10113251)
(1 row)

zydb=# select astext(transform(geomfromtext('POINT(116.78787 39.29983)',4326),32650));
                  astext                  
------------------------------------------
 POINT(481709.059137956 4350071.34479768)
(1 row)

gisdb=# 

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