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

Question

在创建空间表并使用RecoverGeometryColumn函数恢复几何时,如果未将几何列指定为小写,则最终会出现"违反几何约束[不允许geom-type或SRID]"错误.

我做错了什么或者我错过了某些文件吗？

Answer 1

举个例子:

1. 创建一个具有空间列的表

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

2. 恢复几何体

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

3. 查看创建的触发器

   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',但触发器正在寻找'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.