我在Oracle中编写了外连接的代码。它给我'缺少关键字'错误
create table Fenergo_data_01 as select tab1.* , tab2.* , tab3.*, tab4.*
from Fenergo_ext_ref_data tab1 full outer join Fenergo_cntry_incorp_data tab2
full outer join Fenergo_address_data tab3
full outer join Fenergo_MCH_data tab4
on tab1.FGO_ID = tab2.FGO_ID and tab1.FGO_ID = tab3.FGO_ID
and tab1.FGO_ID = tab4.FGO;
任何人都可以帮助我吗?
答案 0 :(得分:2)
你需要为每个join
(在on
子句中)指定连接条件,而不是像你一样在结尾指定一次:
CREATE TABLE Fenergo_data_01 AS
SELECT tab1.* , tab2.* , tab3.*, tab4.*
FROM Fenergo_ext_ref_data tab1
FULL OUTER JOIN Fenergo_cntry_incorp_data tab2 ON tab1.FGO_ID = tab2.FGO_ID
FULL OUTER JOIN Fenergo_address_data tab3 ON tab1.FGO_ID = tab3.FGO_ID
FULL OUTER JOIN Fenergo_MCH_data tab4 ON tab1.FGO_ID = tab4.FGO;
答案 1 :(得分:1)
on子句必须作为join语句的一部分包含在内。
create table Fenergo_data_01 as
select tab1.* , tab2.* , tab3.*, tab4.*
from Fenergo_ext_ref_data tab1
full outer join Fenergo_cntry_incorp_data tab2 on tab1.FGO_ID = tab2.FGO_ID
full outer join Fenergo_address_data tab3 on tab1.FGO_ID = tab3.FGO_ID
full outer join Fenergo_MCH_data tab4 on tab1.FGO_ID = tab4.FGO;
答案 2 :(得分:1)
on
子句必须遵循连接:
create table Fenergo_data_01 as select tab1.* , tab2.* , tab3.*, tab4.*
from Fenergo_ext_ref_data tab1 full outer join Fenergo_cntry_incorp_data tab2 on tab1.FGO_ID = tab2.FGO_ID
full outer join Fenergo_address_data tab3 on tab1.FGO_ID = tab3.FGO_ID
full outer join Fenergo_MCH_data tab4 on tab1.FGO_ID = tab4.FGO;
有关join
语法
答案 3 :(得分:1)
您需要在每次加入后指定ON
,如下所示:
create table Fenergo_data_01 as
select tab1.* , tab2.* , tab3.*, tab4.*
from Fenergo_ext_ref_data tab1
full outer join Fenergo_cntry_incorp_data tab2 on tab1.FGO_ID = tab2.FGO_ID
full outer join Fenergo_address_data tab3 on tab1.FGO_ID = tab3.FGO_ID
full outer join Fenergo_MCH_data tab4 on tab1.FGO_ID = tab4.FGO;
答案 4 :(得分:0)
有效的连接如下(加入后跟条件)
SELECT * FROM TABA
JOIN TABB
ON TABA_SOMEID = TABB_SOMEID
尝试以下查询:
create table Fenergo_data_01 as
select tab1.* , tab2.* , tab3.*, tab4.*
from
Fenergo_ext_ref_data tab1
full outer join
Fenergo_cntry_incorp_data tab2
on tab1.FGO_ID = tab2.FGO_ID
full outer join
Fenergo_address_data tab3
on tab1.FGO_ID = tab3.FGO_ID
full outer join
Fenergo_MCH_data tab4
on tab1.FGO_ID = tab4.FGO;