创建超级表时，如果meta中tags类型为NCharField类型，则会变成创建普通表 #5
Description
class Meters(SuperModel):
gps = NCharField(db_column='gps')
class Meta:
database = db
db_table = 'meters'
groupid = NCharField(db_column='gid')
if __name__ == '__main__':
Meters.create_table(safe=True)此时的sql被错误解析为
CREATE TABLE "orc.meters" ("ts" TIMESTAMP, "gps" NCHAR(255))当groupid类型改为其他类型后 可正常创建 sql亦正常
CREATE TABLE "orc.meters" ("ts" TIMESTAMP, "gps" NCHAR(255)) TAGS ("gid" BOOL)