在创建空间表并使用 RecoverGeometryColumn 函数恢复几何时,如果您没有将几何列指定为小写,您最终会收到“违反几何约束 [几何类型或 SRID 不允许]”错误。
我做错了什么还是我错过了某个地方的一些文档?
最佳答案
举个例子:
CREATE TABLE "test1" (
"PK_UID" INTEGER PRIMARY KEY AUTOINCREMENT,
"Geometry" MULTIPOLYGON)
SELECT RecoverGeometryColumn('test1', 'Geometry', 2, 'MULTIPOLYGON',2);
select * from sqlite_master where type='trigger' and lower(tbl_name)='test1'
结果:
CREATE TRIGGER "ggi_test1_Geometry" BEFORE INSERT ON "test1"
FOR EACH ROW BEGIN
SELECT RAISE(ROLLBACK, 'test1.Geometry violates Geometry constraint [geom-type or SRID not allowed]')
WHERE (SELECT type FROM geometry_columns
WHERE f_table_name = 'test1' AND f_geometry_column = 'Geometry'
AND GeometryConstraints(NEW."Geometry", type, srid, 'XY') = 1) IS NULL;
END
CREATE TRIGGER "ggu_test1_Geometry" BEFORE UPDATE ON "test1"
FOR EACH ROW BEGIN
SELECT RAISE(ROLLBACK, 'test1.Geometry violates Geometry constraint [geom-type or SRID not allowed]')
WHERE (SELECT type FROM geometry_columns
WHERE f_table_name = 'test1' AND f_geometry_column = 'Geometry'
AND GeometryConstraints(NEW."Geometry", type, srid, 'XY') = 1) IS NULL;
END
与 geometry_columns 表中的内容进行比较
select * from geometry_columns
结果:
f_table_name f_geometry_column 类型 coord_dimension srid spaitial_index_enabled
test1 几何多多边形 XY 2 0
结论:
请注意,geometry_columns 表中的 f_geometry_column 被指定为“geometry”,但触发器正在寻找“Geometry”。这会导致“几何约束 [不允许几何类型或 SRID]”问题。因此,解决方法是让您的空间列名称保持小写。
关于sqlite - SpatiaLite v4.0.0 RecoverGeometryColumn 违反几何约束 [geom-type or SRID not allowed]',我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15203403/