尽管有一对多关系

时间:2017-01-04 16:19:35

标签: oracle join oracle11g plsqldeveloper

我正在尝试加入PL-SQL Developer中的表,但是尽管有明显的一对多关系,但输出只有三行,其中字段FED_ST_PRJ_NBR和QP_PROJECTNUMBER匹配。我做了一个正确的连接,以便SURFACING_HISTORY_REPORT中的所有数据都包含在输出中。这是我正在使用的SQL查询,非常简单:

create or replace view PROJECT_NUMBERS_GROUPED as
select t.FED_ST_PRJ_NBR,t.ROUTE_NBR,t.BEG_TERMINI,
t.END_TERMINI,t.LAT,t.LNGTD 
from SITE_MANAGER t
group by t.FED_ST_PRJ_NBR,t.ROUTE_NBR,t.BEG_TERMINI,
t.END_TERMINI,t.LAT,t.LNGTD
order by t.FED_ST_PRJ_NBR
;
--create or replace view SITE_MANAGER_COMBINED AS
select distinct t.route_nbr,t.beg_termini,
t.end_termini,t.lat,t.lngtd,t.FED_ST_PRJ_NBR,s.*
from PROJECT_NUMBERS_GROUPED t right join SURFACING_HISTORY_REPORT s    
on t.fed_st_prj_nbr = s.QP_PROJECTNUMBER
order by t.route_nbr

可以肯定的是,我通过在另一个表上创建了一个带有t.fed_st_prj_nbr的主键来检查t.fed_st_prj_nbr和s.QP_PROJECTNUMBER之间是否存在一对多的关系,并且它运行正常。以下是我尝试加入的两个数据集的各个部分。第一个是PROJECT_NUMBERS_GROUPED表的一部分。

FED_ST_PRJ_NBR    ROUTE_NBR BEG_TERMINI END_TERMINI LAT LNGTD
AR 29148            LOCAL   0.1             472927  1112041
ARRA 0002(874)      DIST WIDE               470636  1044251
ARRA 101-1(4)2      N-101   2.34    2.43    473129  1111724
ARRA 1028(4)        U-1028  0.12    1.46    454754  1082627
ARRA 1031(11)       U-1031  1.938   2.912   454544  1083703
ARRA 1031(9)        U-1031  4.762   2.912   474405  1083703
ARRA 11-1(51)53     P-11    53.2    57.9    454005  1103302
ARRA 13-1(45)37     P-13    36.8            451141  1114044
ARRA 15(90)         N-5     0.007   1.506   480933  1141816
ARRA 15(91)         N-5     1.506   3.046   481033  1141924
ARRA 15(92)         N-5     3.046   3.994   481124  1142001
ARRA 15-2(81)125    I-15    125.5   126.2   455930  1123254
ARRA 15-4(89)240    I-15                    470514  1115740
ARRA 16(73)         LOCAL                   454032  1110107
ARRA 1806(8)        U-1806  0.0 0.7         455958  1123141
ARRA 1810(4)        U-1810  0.1 1.4         455957  1123004
ARRA 235-1(11)2     S-235   1.9 4.5         454346  1110711
ARRA 25(50)         LOCAL   0.7 1.5         463616  1115559
ARRA 260-1(5)0      S-260   0.0 3.6         482442  1153432
ARRA 27-1(9)2       P-27    2.3 6.8         455434  1043208

,这是其他数据集的一部分(只是一些列和行):

QP_PROJECTNUMBER    QP_PROJECTNAME  QMI_NAME    QMI_ITEMNUMBER
ARRA 101-1(4)2  SMELTER AVE & 10TH ST N-GREAT FALLS PLANT MIX GR D   - COMMERCIAL TESTED    401020022
ARRA 101-1(4)2  SMELTER AVE & 10TH ST N-GREAT FALLS PLANT MIX GR D   - COMMERCIAL TESTED    401020022
ARRA 1028(4)    LOCKWOOD - SOUTHEAST    PLANT MIX GR D - COMMERCIAL TESTED  401020022
ARRA 1028(4)    LOCKWOOD - SOUTHEAST    PLANT MIX GR D - COMMERCIAL TESTED  401020022
ARRA 1031(11)   SHILOH ROAD CORRIDOR-BILLINGS   PLANT MIX BIT SURF GR S - 19 MM 401080000
ARRA 1031(11)   SHILOH ROAD CORRIDOR-BILLINGS   PLANT MIX BIT SURF GR S - 19 MM 401080000
ARRA 1031(11)   SHILOH ROAD CORRIDOR-BILLINGS   PLANT MIX BIT SURF GR S - 19 MM 401080000
ARRA 11-1(51)53 LIVINGSTON - NE PLANT MIX BIT SURF GR S - 3/4 IN    401020045
ARRA 11-1(51)53 LIVINGSTON - NE PLANT MIX BIT SURF GR S - 3/4 IN    401020045
ARRA 11-1(51)53 LIVINGSTON - NE PLANT MIX BIT SURF GR S - 3/4 IN    401020045
ARRA 15(90) KBP - US 93 TO AIRPORT RD   PLANT MIX BIT SURF GR S - 19 MM 401080000
ARRA 15(90) KBP - US 93 TO AIRPORT RD   PLANT MIX GR D - COMMERCIAL TESTED  401020507
ARRA 15(90) KBP - US 93 TO AIRPORT RD   PLANT MIX BIT SURF GR S - 19 MM 401080000
ARRA 15(90) KBP - US 93 TO AIRPORT RD   PLANT MIX GR D - COMMERCIAL TESTED  401020507
ARRA 15(92) KBP - FOYS LAKE RD TO US 2  PLANT MIX GR D - COMMERCIAL TESTED  401020507
ARRA 15(92) KBP - FOYS LAKE RD TO US 2  PLANT MIX GR D - COMMERCIAL TESTED  401020507
ARRA 15(92) KBP - FOYS LAKE RD TO US 2  PLANT MIX BIT SURF GR S - 19 MM 401080000

1600多个行中的不止一行应该正确加入。这是数据类型问题吗?我也尝试过:

on t.fed_st_prj_nbr like s.QP_PROJECTNUMBER

并没有改变任何事情。怎么了?

1 个答案:

答案 0 :(得分:1)

好像你可能在t.fed_st_prj_nbr列中有尾随(和/或前导)空格。

尝试将连接条件更改为:

trim(t.fed_st_prj_nbr) = s.qp_projectnumber