我的 postgresql-8.4 数据库中有以下表格和序列:
CREATE TABLE complexobjectpy
(
id integer NOT NULL,
the_geom geometry,
semcat integer,
CONSTRAINT complexobjectpy_pkey PRIMARY KEY (id),
CONSTRAINT enforce_dims_the_geom CHECK (st_ndims(the_geom) = 2),
CONSTRAINT enforce_srid_the_geom CHECK (st_srid(the_geom) = 900913)
)
WITH (
OIDS=FALSE
);
ALTER TABLE complexobjectpy OWNER TO tss;
CREATE SEQUENCE seq_complexobjectpy
INCREMENT 1
MINVALUE 1
MAXVALUE 9223372036854775807
START 1
CACHE 1;
ALTER TABLE seq_complexobjectpy OWNER TO tss;
以下是我的 Django 模型:
class Complexobjectpy(models.Model):
the_geom = models.GeometryField(srid=900913)
semcat = models.IntegerField()
objects = models.GeoManager()
class Meta:
db_table = u'complexobjectpy'
执行以下查询:
myObj = Complexobjectpy(semcat=50, the_geom=geometryMerged.wkt)
myObj.save(using='u1')
我得到错误:
IntegrityError: null value in column "id" violates not-null constraint
为什么我会得到这个?阅读文档,我期望使用序列自动选择 id 值...