入世對多個表中的Teradata

Question

請幫我通過這個

sel a.col1,a.co2,a.col3,.........b.col1,b.col2..,c.col1,c.col2 
from table1 as a inner join table2 as b on a.col1 =b.col1 
inner join table3 as c on a.col1 = b.col1 
where col1 = xxxxx; 

現在我需要加入一個多表見表4。由於表4沒有col1作爲主索引，所以我需要將它加入到具有主鍵的另一個表中。

以下是我需要在上述sel語句中包含的不同查詢。

Sel xx.col1,yy.aaa,yy.bbb,zz.ccc,zz.ddd,zz.eee 
from tablea as xx, tableb as yy, table4 as zz 
where xx.col1 = yy.bbb and yy.aaa = zz.ccc 

主要指數法：

• COL1爲表1，表2，表3，tablexx
• AAA認證表B
• CCC爲表4

在此先感謝

Answer 1

如何：

Select a.leg,c.btn,p.prods,svc.sr,speed.test, a.leg, b.acct_id, e.emp_no, e.emp_name 
FROM db1.tb1 as a 
    inner join db1.tb2 as C ON a.leg = C.leg 
    inner join db1.tb3 as p ON a.leg = p.leg 
    inner join db1.tb3 as svc on a.leg = svc.leg 
    inner join db2.tb4 as speed on a.leg = speed.leg 
    inner join db4.tb1 as b on a.leg = b.sce_acct_id 
    inner join db4.tb5 as e on b.acct_id = e.acct_id 
where a.leg ='xxxx'