描述

如果几何或几何集合包含循环字符串，则返回True

可用性：1.2.3？

This function supports 3d and will not drop the z-index.

This method supports Circular Strings and Curves

示例

SELECT ST_HasArc(ST_Collect('LINESTRING(1 2, 3 4, 5 6)', 'CIRCULARSTRING(1 1, 2 3, 4 5, 6 7, 5 6)'));
                st_hasarc
                --------
                t
                

另请参阅

ST_CurveToLine, ST_LineToCurve