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返回转换定义的格式副本。
ST_SpatialRefSys::ST_FormatTransformDefinition(transform-definition)
transform-definition
LONG VARCHAR
空间参照系转换定义文本
LONG VARCHAR 返回对转换定义进行定义的文本字符串
SQL/MM (ISO/IEC 13249-3: 2006) 服务商扩充
以下示例返回结果 [+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +towgs84=0,0,0 +no_defs]。
+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +towgs84=0,0,0 +no_defs
SELECT ST_SpatialRefSys::ST_FormatTransformDefinition('+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs')
语法