我尝试使用Entity Framework
运行以下DB2 SQLSELECT CM98.TUCUS01.CUST_NO,
CM98.TUMHC08.APPL_DT,
CM98.TUUNI30.MDL_ID,
CM98.TUMHC08.APPL_ID,
CM98.TUMHC08.DLR_NO,
CM98.TUMHC07.STAT_CD_DESC_TX,
CM98.TUCUS01.LAST_NAME,
CM98.TUCUS01.FST_NAME,
CM98.TUMHC08.UN_ID,
CM98.TUMHC08.PL_ID
FROM CM98.TUSRV97,
CM98.TUMHC06,
CM98.TUMHC07,
CM98.TUCUS01,
CM98.TUUNI30,
CM98.TUMHC08
WHERE ( CM98.TUMHC08.APPL_ID = CM98.TUMHC06.APPL_ID ) and
( CM98.TUMHC07.APPL_STAT_CD = CM98.TUMHC06.APPL_STAT_CD ) and
( CM98.TUUNI30.UN_ID = CM98.TUMHC08.UN_ID ) and
( CM98.TUSRV97.XPROD_DIV_CD = CM98.TUUNI30.XPROD_DIV_CD ) and
( CM98.TUSRV97.XPROD_CD = CM98.TUUNI30.XPROD_CD ) and
( CM98.TUSRV97.MDL_ID = CM98.TUUNI30.MDL_ID ) and
( CM98.TUMHC08.CUST_NO = CM98.TUCUS01.CUST_NO ) and
( ( "CM98"."TUMHC06"."APPL_STAT_TS" = (SELECT MAX(APPL_STAT_TS) FROM CM98.TUMHC06 WHERE APPL_ID = CM98.TUMHC08.APPL_ID) ) )
以下是我创建的Linq查询
from SRV97 in db.TUSRV97
from MHC06 in db.TUMHC06
from MHC07 in db.TUMHC07
from CUS01 in db.TUCUS01
from UNI30 in db.TUUNI30
from MHC08 in db.TUMHC08
where
MHC08.APPL_ID == MHC06.APPL_ID &&
MHC07.APPL_STAT_CD == MHC06.APPL_STAT_CD &&
UNI30.UN_ID == MHC08.UN_ID &&
SRV97.XPROD_DIV_CD == UNI30.XPROD_DIV_CD &&
SRV97.XPROD_CD == UNI30.XPROD_CD &&
SRV97.MDL_ID == UNI30.MDL_ID &&
MHC08.CUST_NO == CUS01.CUST_NO &&
MHC06.APPL_STAT_TS ==
(from tempTUMHC060 in db.TUMHC06
where
tempTUMHC060.APPL_ID == MHC08.APPL_ID
select new {
tempTUMHC060.APPL_STAT_TS
}).Max(p => p.APPL_STAT_TS)
select new {
CUS01.CUST_NO,
MHC08.APPL_DT,
UNI30.MDL_ID,
MHC08.APPL_ID,
MHC08.DLR_NO,
MHC07.STAT_CD_DESC_TX,
CUS01.LAST_NAME,
CUS01.FST_NAME,
MHC08.UN_ID,
MHC08.PL_ID
}
我在执行纯SQL查询时得到一行，但在执行Linq查询时没有任何内容。
我写的LINQ是否等同于SQL？
我不知道出了什么问题。任何想法？
更新 以下是LINQ生成的内部查询
{SELECT project1.appl_id
AS
appl_id, project1.cust_no
AS
cust_no, project1.appl_dt
AS
appl_dt, project1.mdl_id1
AS
mdl_id, project1.appl_id1
AS
appl_id1, project1.dlr_no
AS
dlr_no, project1.stat_cd_desc_tx
AS
stat_cd_desc_tx, project1.last_name
AS
last_name, project1.fst_name
AS
fst_name, project1.un_id1
AS
un_id, project1.pl_id
AS
pl_idfrom
(
SELECT extent1.xprod_div_cd AS xprod_div_cd,
extent1.xprod_cd AS xprod_cd,
extent1.mdl_id AS mdl_id,
extent2.appl_id AS appl_id,
extent2.appl_stat_cd AS appl_stat_cd,
extent2.appl_stat_ts AS appl_stat_ts,
extent3.appl_stat_cd AS appl_stat_cd1,
extent3.stat_cd_desc_tx AS stat_cd_desc_tx,
extent4.last_name AS last_name,
extent4.fst_name AS fst_name,
extent4.cust_no AS cust_no,
extent5.un_id AS un_id,
extent5.xprod_div_cd AS xprod_div_cd1,
extent5.xprod_cd AS xprod_cd1,
extent5.mdl_id AS mdl_id1,
extent6.appl_id AS appl_id1,
extent6.un_id AS un_id1,
extent6.cust_no AS cust_no1,
extent6.pl_id AS pl_id,
extent6.dlr_no AS dlr_no,
extent6.appl_dt AS appl_dt,
(
SELECT max(extent7.appl_stat_ts) AS a1
FROM (
SELECT tumhc06.appl_id AS appl_id,
tumhc06.appl_stat_cd AS appl_stat_cd,
tumhc06.appl_stat_ts AS appl_stat_ts,
tumhc06.cret_by_id AS cret_by_id
FROM honda.tumhc06 AS tumhc06) AS extent7
WHERE extent7.appl_id = extent6.appl_id) AS c1
FROM honda.tusrv97 AS extent1
CROSS JOIN
(
SELECT tumhc06.appl_id AS appl_id,
tumhc06.appl_stat_cd AS appl_stat_cd,
tumhc06.appl_stat_ts AS appl_stat_ts,
tumhc06.cret_by_id AS cret_by_id
FROM honda.tumhc06 AS tumhc06) AS extent2
CROSS JOIN honda.tumhc07 AS extent3
CROSS JOIN
(
SELECT tucus01.last_name AS last_name,
tucus01.fst_name AS fst_name,
tucus01.mid_init AS mid_init,
tucus01.cust_email_addr AS cust_email_addr,
tucus01.cust_state AS cust_state,
tucus01.cust_addr AS cust_addr,
tucus01.cust_addr2 AS cust_addr2,
tucus01.cust_city AS cust_city,
tucus01.zip_cd5 AS zip_cd5,
tucus01.zip_cd4 AS zip_cd4,
tucus01.fips_ctry_cd AS fips_ctry_cd,
tucus01.last_upd_date AS last_upd_date,
tucus01.cust_no AS cust_no,
tucus01.cust_name_sfx_txt AS cust_name_sfx_txt,
tucus01.zip_cd3 AS zip_cd3,
tucus01.war_cust_sex_cd AS war_cust_sex_cd,
tucus01.cust_typ_cd AS cust_typ_cd,
tucus01.cust_ttl_cd AS cust_ttl_cd,
tucus01.cust_ttl AS cust_ttl,
tucus01.ssec_no AS ssec_no,
tucus01.brth_date AS brth_date,
tucus01.data_srce_cd AS data_srce_cd
FROM cm98.tucus01 AS tucus01) AS extent4
CROSS JOIN honda.tuuni30 AS extent5
CROSS JOIN honda.tumhc08 AS extent6)
AS
project1where (((((((project1.appl_id1 = project1.appl_id) AND
(
project1.appl_stat_cd1 = project1.appl_stat_cd
)
) AND
(
project1.un_id = project1.un_id1
)
) AND
(
project1.xprod_div_cd = project1.xprod_div_cd1
)
) AND
(
project1.xprod_cd = project1.xprod_cd1
)
) AND
(
project1.mdl_id = project1.mdl_id1
)
) AND
(
project1.cust_no1 = project1.cust_no
)
) AND
(
project1.appl_stat_ts = project1.c1
)
}
由于
答案 0 :(得分：0)
我找到了解决此问题的方法。 刚刚删除了edmx文件中的所有表，并再次添加，按预期工作。