performance - 如何将 2 个 teradata 查询合并为一个

Question

有人可以帮我将这两个 Teradata 查询组合成一个查询吗？表 - cdb.dim_party_doc_id、cdb.dim_doc_issuer、mdb.fp_account_entity_map 中没有 customer_account_number，因此我无法在单个查询中直接连接所有这些表。非常感谢！！

SELECT
    det.cust_id AS customer_account_number,
    c.encrypt_val AS ssn_encrypted,
    det.cust_first_name AS name_1,
    bal.BALANCE_AMT AS principal 
FROM
    cdb.DIM_CUSTOMER det 
INNER JOIN
    cdb.fact_stored_val_acct_dly bal 
        ON det.cust_id = bal.customer_id AND bal.curr_cd='USD' and bal.acct_type_code='SBA'
INNER JOIN
    cdb.dim_party_acct_map b 
        ON bal.customer_id = b.cust_id 
INNER JOIN
    cdb.dim_party_doc_id c 
        ON b.party_key = c.party_key 
        AND c.status = 'A' 
INNER JOIN
    cdb.dim_doc_issuer d 
        ON c.doc_issuer_id = d.doc_issuer_id 
        AND d.doc_type = 'TAX_ID' 
        AND d.doc_subtype = 'SSN'         

和

   SELECT 
        own.owner_id AS customer_account_number,
        entity.entity_id AS dd_number
    FROM
        mdb.fp_account_owner_map own
    LEFT JOIN
        mdb.fp_account_entity_map entity
            ON own.fp_account_id = entity.fp_account_id
    WHERE 
        entity.entity_type in (12)
    AND 
        own.product_id in (5501)

Answer 1

下面的查询解决了我的问题

SELECT
    det.cust_id AS customer_account_number,
    temp.direct_deposit_account_number AS account_number,
    c.encrypt_val AS ssn_encrypted,
    det.cust_first_name AS name_1,
    bal.BALANCE_AMT AS principal
FROM
    cdb.DIM_CUSTOMER det 
LEFT JOIN
    cdb.fact_stored_val_acct_dly bal 
        ON det.cust_id = bal.customer_id AND bal.curr_cd='USD' and bal.acct_type_code='SBA'
INNER JOIN
    cdb.dim_party_acct_map b 
        ON bal.customer_id = b.cust_id 
INNER JOIN
    cdb.dim_party_doc_id c 
        ON b.party_key = c.party_key 
        AND c.status = 'A' 
INNER JOIN
    cdb.dim_doc_issuer d 
        ON c.doc_issuer_id = d.doc_issuer_id 
        AND d.doc_type = 'TAX_ID' 
        AND d.doc_subtype = 'SSN'    
INNER JOIN 
    (SELECT 
         own.owner_id AS customer_id,
         entity.entity_id AS direct_deposit_account_number
     FROM mdb.fp_account_owner_map own 
     LEFT JOIN
     mdb.fp_account_entity_map entity
     ON own.fp_account_id = entity.fp_account_id
     WHERE entity.entity_type in (12)
     AND own.product_id in (5501)) AS temp
 ON customer_account_number=temp.customer_id