生年月日を使用している年齢グループ

Question

お客様の誕生日を使用して、以下の各年齢グループにカウントを取得したいと考えています。顧客はまた、特定の条件を満たす必要があります。私は2つのテーブルを使用する必要があります。

次の表と列を使用して

18 to 25 
26 to 35 
36 to 45 
46 to 55 
56 to 65 
65 and over 

：

BRTH_DT - birthday 
MSTR_CUST - customer table where BRTH_DT is 
MSTR_ACT - account table where BR_CD is 
BR_CD - code , I want to include all customer with code like '%00%' 
CUST_ODT - customer open date from customer table, I want to include dates between '2017-11-01' and '2017-11-30' 

私はいくつかの構文を試してみましたが、それは動作しません。私はHadoopを使用しています。

問合せ：

SELECT (
    CASE 
    WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 18 AND 25 
     THEN '18-25' 
    ELSE 
     CASE 
     WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 26 AND 35 
      THEN '26-35' 
     ELSE 
      CASE 
      WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 36 AND 45 
       THEN '36-45' 
      ELSE 
       CASE 
       WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 46 AND 55 
        THEN '46-55' 
       ELSE 
        CASE 
        WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 56 AND 65 
         THEN '56-65' 
        ELSE 
         CASE 
         WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) > 65 
          THEN '65andOver' 
    END) from MSTR_ACCT_A JOIN MSTR_CUST B 
    where B.CUST_ODT between '2017-11-01' and '2017-11-30' and A.BR_CD like '%00%'; 

Answer 1

以下にクエリは、あなたが何を目指しているのと同じことを行う必要があります。私はあなたのケースを単純化しました。入れ子のcase文が構文エラーであるかどうかはわかりませんが、あまりにも複雑です。私はまた作成される列に名前を追加しました。

SELECT 
    CASE 
    WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 18 AND 25 
     THEN '18-25' 
    WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 26 AND 35 
     THEN '26-35' 
    WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 36 AND 45 
     THEN '36-45' 
    WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 46 AND 55 
     THEN '46-55' 
    WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) BETWEEN 56 AND 65 
     THEN '56-65' 
    WHEN EXTRACT (YEAR FROM (select sysdate from dual)) - EXTRACT (YEAR FROM BRTH_DT) > 65 
     THEN '65andOver' 
    END AS Age_Range 
FROM MSTR_ACCT_A JOIN MSTR_CUST B 
WHERE B.CUST_ODT BETWEEN '2017-11-01' AND '2017-11-30' AND A.BR_CD LIKE '%00%';