豐富表

Question

這是我的查詢：

SELECT 
a.account_type AS ACCOUNT_TYPE 
,b.at_account_type_desc 
,COUNT(a.BAN) AS num_BAN 
FROM csm_adx.billing_account_act AS a 
LEFT OUTER JOIN csm_adx.account_type_act AS b ON a.account_type = b.at_acc_type 
GROUP BY 1,2 

現在我想將它連接到其中包含的信息另一個表TABLE_C的帳戶：暫定，取消，關閉，暫停開放。

我想我的結果表包含aditional的三列：ACTIVE_BAN，SUSPENDED_BAN和CANCELLED_BAN 每個數值包含當前活動，暫停和取消禁令的數量。我正在使用Teradata。

你能幫我做這個嗎？

這是當表與包含BAN狀態的另一個表連接的結果：

SELECT 
a.account_type AS ACCOUNT_TYPE 
,b.at_account_type_desc 
,c.description 
,COUNT(a.BAN) AS num_BAN 
FROM csm_adx.billing_account_act AS a 
LEFT OUTER JOIN csm_adx.account_type_act AS b 
ON a.account_type = b.at_acc_type 
LEFT OUTER JOIN csm_adx.acct_status AS c 
ON a.ban_status = c.original_status_code 
GROUP BY 1,2,3 

Answer 1

SELECT 
a.account_type AS ACCOUNT_TYPE 
,b.at_account_type_desc 
,COUNT(a.BAN) AS num_BAN , 
sum(case when a.column=value then 1 else 0 end) as 'user_colname1', 
sum(case when b.column=value then 1 else 0 end) as 'user_colname2' 
FROM csm_adx.billing_account_act AS a 
LEFT OUTER JOIN csm_adx.account_type_act AS b 
ON a.account_type = b.at_acc_type 
GROUP BY 1,2