   ALTER TABLE "public"."adm_practitioner" 
   ADD COLUMN "signature" text COLLATE "pg_catalog"."default" DEFAULT ''::character varying;
   COMMENT ON COLUMN "public"."adm_practitioner"."signature" IS '签名图片';
   
   -- 插入为adm_practitioner表添加列的迁移记录
INSERT INTO __MigrationsHistory (MigrationId, ProductVersion)
VALUES ('202509101025add_column_adm_practitioner', '1.0.0');