--PROJCS[
--       "Xian 1980 / 3-degree Gauss-Kruger CM 118.83E",
--       GEOGCS [
--          "Xian 1980",
--          DATUM [
--             "Xian 1980 (EPSG ID 6610)",
--             SPHEROID ["Xian 1980 (EPSG ID 7049)", 6378140, 298.257]],
--             PRIMEM [ "Greenwich", 0.000000 ],
--             UNIT ["Decimal Degree", 0.01745329251994328]],
--             PROJECTION ["Transverse Mercator"],
--             PARAMETER ["Latitude_Of_Origin", 0],
--             PARAMETER ["Central_Meridian", 118.8333],
--             PARAMETER ["Scale_Factor", 1],
--             PARAMETER ["False_Easting", 500000],
--             PARAMETER ["False_Northing", 0],
--             UNIT ["Meter", 1]]
-- 首先，基础地理坐标系是Xian 1980， 它的EPSG ID为6610
-- 然后找到与计算PROJECTION["Transverse Mercator"]ESPG等式
select coord_op_method_id,   legacy_name
from sdo_coord_op_methods
where not legacy_name is nullorder by coord_op_method_id;
--结果显示
--COORD_OP_METHOD_ID    LEGACY_NAME
-------------------------------------------
--  9802  Lambert Conformal Conic
--  9803  Lambert Conformal Conic (Belgium 1972)
--  9805  Mercator
--  9806  Cassini
--  9807  Transverse Mercator
--  9829  Polar Stereographic
-------------
--根据PROJECTION ["Transverse Mercator"]，选择9807
--建立坐标转换规则，编号96170insert into MDSYS.SDO_COORD_OPS(COORD_OP_ID,COORD_OP_NAME,COORD_OP_TYPE,SOURCE_SRID,TARGET_SRID,COORD_TFM_VERSION,COORD_OP_VARIANT,COORD_OP_METHOD_ID,UOM_ID_SOURCE_OFFSETS,UOM_ID_TARGET_OFFSETS,INFORMATION_SOURCE,DATA_SOURCE,SHOW_OPERATION,IS_LEGACY,LEGACY_CODE,REVERSE_OP,IS_IMPLEMENTED_FORWARD,IS_IMPLEMENTED_REVERSE)
VALUES(96170,'3-degree Gauss-Kruger CM 118.83E (EPSG OP 96170)',       'CONVERSION',NULL,NULL,NULL,NULL,9807,NULL,NULL,'EPSG','EPSG',1,'FLASE',NULL,1,1,1);--看看需要添加哪些参数
select use.parameter_id ||':'||use.legacy_param_name
fromsdo_coord_op_param_use use
where use.coord_op_method_id=9807
--结果：
--  8801:Latitude_Of_Origin
--  8802:Central_Meridian
--  8805:Scale_Factor
--  8806:False_Easting
--  8807:False_Northing
--检查一下完全吻合啊!!!!!
--现在查查经常使用的单位：
select UOM_ID ||':'||UNIT_OF_MEAS_NAME
from sdo_units_of_measure
where uom_id in (9001,9101,9102,9201)
order by uom_id;
--结果
--  9001:metre
--  9101:radian
--  9102:degree
--  9201:unity--现在，插入参数
--  8801:Latitude_Of_Origin
insert into MDSYS.Sdo_Coord_Op_Param_Vals(COORD_OP_ID,COORD_OP_METHOD_ID,PARAMETER_ID,PARAMETER_VALUE,PARAM_VALUE_FILE_REF,UOM_ID
)
VALUES(96170,9807,8801,0,NULL,9102 );
--  8802:Central_Meridian
insert  into MDSYS.SDO_COORD_OP_PARAM_VALS(COORD_OP_ID,COORD_OP_METHOD_ID,PARAMETER_ID,PARAMETER_VALUE,PARAM_VALUE_FILE_REF,UOM_ID)
VALUES(96170,9807,8802,118.833333333333,NULL,9102
);
--  8805:Scale_Factor
insert  into MDSYS.SDO_COORD_OP_PARAM_VALS(COORD_OP_ID,COORD_OP_METHOD_ID,PARAMETER_ID,PARAMETER_VALUE,PARAM_VALUE_FILE_REF,UOM_ID)
VALUES(96170,9807,8805,1,NULL,9201
);
--  8806:False_Easting
insert  into MDSYS.SDO_COORD_OP_PARAM_VALS(COORD_OP_ID,COORD_OP_METHOD_ID,PARAMETER_ID,PARAMETER_VALUE,PARAM_VALUE_FILE_REF,UOM_ID)
VALUES(96170,9807,8806,500000,NULL,9001
);
--  8807:False_Northing
insert  into MDSYS.SDO_COORD_OP_PARAM_VALS(COORD_OP_ID,COORD_OP_METHOD_ID,PARAMETER_ID,PARAMETER_VALUE,PARAM_VALUE_FILE_REF,UOM_ID)
VALUES(96170,9807,8807,0,NULL,9001
);
--现在建立投影坐标系。首先要确定GEOG_CRS_DATUM_ID和COORD_SYS_ID。
--GEOG_CRS_DATUM_ID是地理坐标系对应的datum_id
--select datum_id from sdo_coord_ref_sys where srid=4610
--GEOG_CRS_DATUM_ID为6610
--CORD_SYS_ID是4530，CORD_SYS_NAME为Cartesian 2D CS.  Axes: northing, easting (X,Y). Orientations: north, east.  UoM: m.
--现在开始建立投影坐标系
insert into MDSYS.SDO_COORD_REF_SYSTEM(SRID,COORD_REF_SYS_NAME,COORD_REF_SYS_KIND,COORD_SYS_ID,DATUM_ID,GEOG_CRS_DATUM_ID,SOURCE_GEOG_SRID,PROJECTION_CONV_ID,CMPD_HORIZ_SRID,CMPD_VERT_SRID,INFORMATION_SOURCE,DATA_SOURCE,IS_LEGACY,LEGACY_CODE,LEGACY_WKTEXT,LEGACY_CS_BOUNDS,IS_VALID,SUPPORTS_SDO_GEOMETRY)
VALUES(9992010,'Xian 1980 / 3-degree Gauss-Kruger CM 118.83E','PROJECTED',4530,NULL,6610,4610,96170,NULL,NULL,'EPSG','EPSG','FALSE',NULL,NULL,NULL,'TRUE','TRUE');