我阅读了有关geodata的Teradata文档，但是我没有找到删除一个单元格中重复GPS坐标的功能。

数据示例：

  

MULTIPOLYGON（（（41.09423399975099 39.850405499702731,41.121847232397471 39.81539642398031,41.13581721823796 39.814866630539235,41.11144837812585 39.806205028358264,41.096821193470063 39.811128399466909,41.09423399975099 39.850405499702731）），（（41.09293111799888 39.834363111372028,41.094048133675848 39.834371341560221,41.095179746649201 39.833750931333725,41.092417252128226 39.833730362683433,41.09293111799888 39.834363111372028）），（（41.157473033087662 39.820361125161121 ，41.156441006820601 39.816581619198779,41.149697742078025 39.818421417466425,41.150786934648885 39.819686413211578,41.157473033087662 39.820361125161121）））（（（41.13696151333904 39.813617190831202,41.141077948029839 39.813612019403293392 814392843813 81341

你能告诉我有没有这样的功能？

感谢！