Question

如果未将几何列指定为小写，则在使用RecoverGeometryColumn函数创建空间表并恢复几何时，最终会出现“违反几何约束[geom-type或SRID not allowed]”错误。< / p>

我做错了什么或者我错过了某些文档吗？

Answer 1

举个例子：

创建一个具有空间列的表

CREATE TABLE "test1" (
"PK_UID" INTEGER PRIMARY KEY AUTOINCREMENT,
"Geometry" MULTIPOLYGON)

恢复几何

SELECT RecoverGeometryColumn('test1', 'Geometry', 2, 'MULTIPOLYGON',2);

查看已创建的触发器

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 geometry MULTIPOLYGON XY 2 0

结论：请注意，geometry_columns表将f_geometry_column指定为“geometry”，但触发器正在查找“Geometry”。这会导致'几何约束[不允许使用geom-type或SRID]问题。因此，修复方法是将空间列名称保持为小写。

SpatiaLite v4.0.0 RecoverGeometryColumn违反了几何约束[不允许使用geom-type或SRID]'

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