怎么解决这个问题jdbc.SQLServerException: 对象名 'GY_DMZD' 无效。

这个问题可能是由于数据库表名或字段名错误导致的。你可以检查以下几点：

1. 确认表名是否正确，包括大小写是否一致。

2. 确认表是否存在，可以通过 SQL Server Management Studio 进行确认。

3. 确认字段名是否正确，同样要注意大小写。

4. 确认 SQL 语句是否正确，语法错误也可能导致该异常。

如果以上都没有解决问题，你可以尝试重新连接数据库，或者查看数据库连接是否正确。

相关问题

SELECT * FROM ( SELECT GY_YLSF.FYMC AS FYMC, GY_YLSF.FYDW AS FYDW, MS_YJ02.YLSL AS FYSL, MS_YJ02.YLDJ AS FYDJ, MS_YJ02.ZFBL AS ZFBL, (MS_YJ02.ZFBL * MS_YJ02.YLDJ * MS_YJ02.YLSL) as zje, ( MS_YJ02.YLDJ * MS_YJ02.YLSL) as zje1, GY_YGDM.YGXM AS YGXM, MS_YJ01.brxm as brxm, ms_mzxx.jzrq as jzrq, MS_YJ02.fygb as fygb, YYGH_GHJL.fzbz as fzbz, GY_YLSF.srfl as srfl, ms_brda.mzhm, MS_YJ01.ysdm, GY_YGDM.ygbh, ms_mzxx.sfrq, gy_ksdm.KSMC, MS_YJ01.BRXZ, MS_BRDA.BRID, (select dmmc from GY_YLSF a,GY_DMZD b where a.FYXH = GY_YLSF.FYXH and a.srfl = b.DMSB and b.DMLB = 1177 )sffl FROM MS_YJ02, GY_YLSF, MS_YJ01, GY_YGDM, gy_ksdm, ms_mzxx, ms_brda, YYGH_GHJL WHERE ( GY_YLSF.FYXH = MS_YJ02.YLXH ) AND ( MS_YJ01.YJXH = MS_YJ02.YJXH ) AND ( MS_YJ01.YSDM = GY_YGDM.YGDM ) AND (gy_ksdm.ksdm = MS_YJ01.ksdm )and ( ms_yj01.brid = ms_brda.brid )and ( ms_mzxx.ZFPB = 0 ) AND (ms_yj01.fphm = ms_mzxx.fphm) and (YYGH_GHJL.GHLSH = MS_YJ01.GHLSH) and ( MS_YJ01.FJLB IS NULL OR MS_YJ01.FJLB = 0 ) and (MS_YJ01.FPHM is not null )

这是一个 SQL 查询语句，可能是用于查询医院的费用信息。它使用了多个表之间的关联条件，包括挂号记录、医技申请单、医生信息、科室信息、门诊信息等等。查询结果包括费用名称、单位、数量、单价、自负比例、总金额、医生姓名、病人姓名、结算日期、费用归并、费别、收入分类、门诊号码、医生代码、医工编号、收费日期、科室名称、病人性质、病人ID等信息。

请帮我为以上代码添加注释

以下是对该 SQL 查询语句的注释：

SELECT * FROM (
-- 查询所有列
   SELECT 
      GY_YLSF.FYMC AS FYMC, -- 费用名称
      GY_YLSF.FYDW AS FYDW, -- 费用单位
      MS_YJ02.YLSL AS FYSL, -- 费用数量
      MS_YJ02.YLDJ AS FYDJ, -- 费用单价
      MS_YJ02.ZFBL AS ZFBL, -- 自负比例
      (MS_YJ02.ZFBL * MS_YJ02.YLDJ * MS_YJ02.YLSL) as zje, -- 总金额
      (MS_YJ02.YLDJ * MS_YJ02.YLSL) as zje1, -- 总金额
      GY_YGDM.YGXM AS YGXM, -- 医生姓名
      MS_YJ01.brxm as brxm, -- 病人姓名
      ms_mzxx.jzrq as jzrq, -- 结算日期
      MS_YJ02.fygb as fygb, -- 费用归并
      YYGH_GHJL.fzbz as fzbz, -- 费别
      GY_YLSF.srfl as srfl, -- 收入分类
      ms_brda.mzhm, -- 门诊号码
      MS_YJ01.ysdm, -- 医生代码
      GY_YGDM.ygbh, -- 医工编号
      ms_mzxx.sfrq, -- 收费日期
      gy_ksdm.KSMC, -- 科室名称
      MS_YJ01.BRXZ, -- 病人性质
      MS_BRDA.BRID, -- 病人ID
      (select dmmc from GY_YLSF a,GY_DMZD b where a.FYXH = GY_YLSF.FYXH and a.srfl = b.DMSB and b.DMLB = 1177 )sffl -- 收费分类
   FROM 
      MS_YJ02, -- 医技申请单表
      GY_YLSF, -- 医疗收费表
      MS_YJ01, -- 医技执行单表
      GY_YGDM, -- 医生表
      gy_ksdm, -- 科室表
      ms_mzxx, -- 门诊表
      ms_brda, -- 病人档案表
      YYGH_GHJL -- 挂号记录表
   WHERE 
      (GY_YLSF.FYXH = MS_YJ02.YLXH) AND -- 医疗收费表和医技申请单表关联
      (MS_YJ01.YJXH = MS_YJ02.YJXH) AND -- 医技执行单表和医技申请单表关联
      (MS_YJ01.YSDM = GY_YGDM.YGDM) AND -- 医生表和医技执行单表关联
      (gy_ksdm.ksdm = MS_YJ01.ksdm) AND -- 科室表和医技执行单表关联
      (ms_yj01.brid = ms_brda.brid) AND -- 病人档案表和医技执行单表关联
      (ms_mzxx.ZFPB = 0) AND -- 未作废的门诊记录
      (ms_yj01.fphm = ms_mzxx.fphm) AND -- 医技执行单表和门诊表关联
      (YYGH_GHJL.GHLSH = MS_YJ01.GHLSH) AND -- 挂号记录表和医技执行单表关联
      (MS_YJ01.FJLB IS NULL OR MS_YJ01.FJLB = 0) AND -- 空或0的附加类别
      (MS_YJ01.FPHM is not null) -- 非空的发票号码
)