我正在尝试在 SQL Azure 中的地理数据类型中创建一个多边形，但是当我将数据类型从 geograhy 更改为 geometry 时，它一直给我一个错误，即指定的输入不代表有效的地理实例。
我试过这个
declare @g geography;
set @g = geography::STGeomFromText('POLYGON((31.02350 30.02944, 31.02350 30.02944, 31.00857 30.04697, 31.00857 30.04697, 30.99415 30.06346, 30.99415 30.06346, 30.97424 30.08708, 30.97424 30.08708, 30.96874 30.08768, 30.96874 30.08768, 30.95947 30.08322, 30.95947 30.08322, 30.94660 30.07475, 30.94660 30.07475, 30.94282 30.07193, 30.94282 30.07193, 30.93441 30.07267, 30.93441 30.07267, 30.93338 30.06599, 30.93338 30.06599, 30.94557 30.05143, 30.94557 30.05143, 30.95140 30.04489, 30.95140 30.04489, 30.92651 30.02990, 30.92651 30.02990, 30.89802 30.01147, 30.89802 30.01147, 30.86746 29.99006, 30.86746 29.99006, 30.83794 29.97222, 30.83794 29.97222, 30.81665 29.95675, 30.81665 29.95675, 30.87158 29.88325, 30.87158 29.88325, 31.02350 30.02944, 31.02350 30.02944, 31.00857 30.04697, 31.00857 30.04697, 30.99415 30.06346, 30.99415 30.06346, 30.97424 30.08708, 30.97424 30.08708, 30.96874 30.08768, 30.96874 30.08768, 30.95947 30.08322, 30.95947 30.08322, 30.94660 30.07475, 30.94660 30.07475, 30.94282 30.07193, 30.94282 30.07193, 30.93441 30.07267, 30.93441 30.07267, 30.93338 30.06599, 30.93338 30.06599, 30.94557 30.05143, 30.94557 30.05143, 30.95140 30.04489, 30.95140 30.04489, 30.92651 30.02990, 30.92651 30.02990, 30.89802 30.01147, 30.89802 30.01147, 30.86746 29.99006, 30.86746 29.99006, 30.83794 29.97222, 30.83794 29.97222, 30.81665 29.95675, 30.81665 29.95675, 30.87158 29.88325, 30.87158 29.88325, 30.92651 29.89962, 30.92651 29.89962, 30.96737 29.89129, 30.96737 29.89129, 31.06419 29.85914, 31.06419 29.85914, 31.08410 29.89664, 31.08410 29.89664, 31.09612 29.92700, 31.09612 29.92700, 31.09921 29.94693, 31.09921 29.94693, 31.04908 30.00017, 31.04908 30.00017,31.02350 30.02944))',4326);
SELECT @g
和这个
declare @g geography;
set @g = geography::STPolyFromText('POLYGON((31.02350 30.02944, 31.02350 30.02944, 31.00857 30.04697, 31.00857 30.04697, 30.99415 30.06346, 30.99415 30.06346, 30.97424 30.08708, 30.97424 30.08708, 30.96874 30.08768, 30.96874 30.08768, 30.95947 30.08322, 30.95947 30.08322, 30.94660 30.07475, 30.94660 30.07475, 30.94282 30.07193, 30.94282 30.07193, 30.93441 30.07267, 30.93441 30.07267, 30.93338 30.06599, 30.93338 30.06599, 30.94557 30.05143, 30.94557 30.05143, 30.95140 30.04489, 30.95140 30.04489, 30.92651 30.02990, 30.92651 30.02990, 30.89802 30.01147, 30.89802 30.01147, 30.86746 29.99006, 30.86746 29.99006, 30.83794 29.97222, 30.83794 29.97222, 30.81665 29.95675, 30.81665 29.95675, 30.87158 29.88325, 30.87158 29.88325, 31.02350 30.02944, 31.02350 30.02944, 31.00857 30.04697, 31.00857 30.04697, 30.99415 30.06346, 30.99415 30.06346, 30.97424 30.08708, 30.97424 30.08708, 30.96874 30.08768, 30.96874 30.08768, 30.95947 30.08322, 30.95947 30.08322, 30.94660 30.07475, 30.94660 30.07475, 30.94282 30.07193, 30.94282 30.07193, 30.93441 30.07267, 30.93441 30.07267, 30.93338 30.06599, 30.93338 30.06599, 30.94557 30.05143, 30.94557 30.05143, 30.95140 30.04489, 30.95140 30.04489, 30.92651 30.02990, 30.92651 30.02990, 30.89802 30.01147, 30.89802 30.01147, 30.86746 29.99006, 30.86746 29.99006, 30.83794 29.97222, 30.83794 29.97222, 30.81665 29.95675, 30.81665 29.95675, 30.87158 29.88325, 30.87158 29.88325, 30.92651 29.89962, 30.92651 29.89962, 30.96737 29.89129, 30.96737 29.89129, 31.06419 29.85914, 31.06419 29.85914, 31.08410 29.89664, 31.08410 29.89664, 31.09612 29.92700, 31.09612 29.92700, 31.09921 29.94693, 31.09921 29.94693, 31.04908 30.00017, 31.04908 30.00017,31.02350 30.02944))',4326);
SELECT @g
但是两者都返回了相同的错误，尽管这很好用
declare @g geometry;
set @g = geometry::STPolyFromText('POLYGON((31.02350 30.02944, 31.02350 30.02944, 31.00857 30.04697, 31.00857 30.04697, 30.99415 30.06346, 30.99415 30.06346, 30.97424 30.08708, 30.97424 30.08708, 30.96874 30.08768, 30.96874 30.08768, 30.95947 30.08322, 30.95947 30.08322, 30.94660 30.07475, 30.94660 30.07475, 30.94282 30.07193, 30.94282 30.07193, 30.93441 30.07267, 30.93441 30.07267, 30.93338 30.06599, 30.93338 30.06599, 30.94557 30.05143, 30.94557 30.05143, 30.95140 30.04489, 30.95140 30.04489, 30.92651 30.02990, 30.92651 30.02990, 30.89802 30.01147, 30.89802 30.01147, 30.86746 29.99006, 30.86746 29.99006, 30.83794 29.97222, 30.83794 29.97222, 30.81665 29.95675, 30.81665 29.95675, 30.87158 29.88325, 30.87158 29.88325, 31.02350 30.02944, 31.02350 30.02944, 31.00857 30.04697, 31.00857 30.04697, 30.99415 30.06346, 30.99415 30.06346, 30.97424 30.08708, 30.97424 30.08708, 30.96874 30.08768, 30.96874 30.08768, 30.95947 30.08322, 30.95947 30.08322, 30.94660 30.07475, 30.94660 30.07475, 30.94282 30.07193, 30.94282 30.07193, 30.93441 30.07267, 30.93441 30.07267, 30.93338 30.06599, 30.93338 30.06599, 30.94557 30.05143, 30.94557 30.05143, 30.95140 30.04489, 30.95140 30.04489, 30.92651 30.02990, 30.92651 30.02990, 30.89802 30.01147, 30.89802 30.01147, 30.86746 29.99006, 30.86746 29.99006, 30.83794 29.97222, 30.83794 29.97222, 30.81665 29.95675, 30.81665 29.95675, 30.87158 29.88325, 30.87158 29.88325, 30.92651 29.89962, 30.92651 29.89962, 30.96737 29.89129, 30.96737 29.89129, 31.06419 29.85914, 31.06419 29.85914, 31.08410 29.89664, 31.08410 29.89664, 31.09612 29.92700, 31.09612 29.92700, 31.09921 29.94693, 31.09921 29.94693, 31.04908 30.00017, 31.04908 30.00017,31.02350 30.02944))',4326);
SELECT @g