Oracle SQL - 从多个值的查询中选择最后更新的值

Question

我编写了以下有效的查询，但是有大量重复项。我只想为所有字段获取一组值。我想获得的值集是与 LAST_UPDATED.

中最新的 date/time 相对应的值

SELECT 
nb_policy.LAST_UPDATED
nb_policy.POLICY_ID,
nb_policy.POLICY_NAME,
customer.NAME,
customer.VANTIVE_ID,
customer.SIEBEL_ID,
NBRP.JOB.JOB_ID,
NBRP.JOB.JOB_TYPE,
NBRP.JOB.JOB_STATE,
NBRP.JOB.SCHEDULE_NAME,
NBRP.JOB.SCHEDULE_TYPE,
NBRP.JOB.KBYTES,
NBRP.JOB.BACKUP_TYPE
FROM nb_policy
LEFT JOIN customer 
ON nb_policy.CUSTOMER_ID = customer.CUSTOMER_ID
RIGHT JOIN NBRP.JOB 
ON nb_policy.POLICY_NAME = NBRP.JOB.CLASS_NAME
WHERE customer.ACTIVE = 1 AND (customer.VANTIVE_ID > 0 OR customer.SIEBEL_ID > 0)

Table 属性：

customer.NAME - VARCHAR2
customer.VANTIVE_ID - VARCHAR2
customer.SIEBEL_ID - VARCHAR2
customer.ACTIVE - NUMBER
nb_policy.LAST_UPDATED - CHAR
nb_policy.POLICY_ID - CHAR
nb_policy.POLICY_NAME - VARCHAR2
NBRP.JOB.JOB_ID - NUMBER
NBRP.JOB.JOB_TYPE - NUMBER
NBRP.JOB.JOB_STATE - NUMBER
NBRP.JOB.SCHEDULE_NAME - VARCHAR2
NBRP.JOB.SCHEDULE_TYPE - NUMBER
NBRP.JOB.KBYTES - NUMBER
NBRP.JOB.BACKUP_TYPE - NUMBER

在按 vercelli 编辑代码后，我收到错误：SQL 错误 [1722] [42000]：ORA-01722：无效数字

下面是vercelli的代码：

SELECT * 
FROM   (SELECT nb_policy.last_updated, 
               nb_policy.policy_id, 
               nb_policy.policy_name, 
               customer.name, 
               customer.vantive_id, 
               customer.siebel_id, 
               nbrp.job.job_id, 
               nbrp.job.job_type, 
               nbrp.job.job_state, 
               nbrp.job.schedule_name, 
               nbrp.job.schedule_type, 
               nbrp.job.kbytes, 
               nbrp.job.backup_type, 
               Row_number() 
                 over ( 
                   PARTITION BY nb_policy.last_updated, nb_policy.policy_id, 
                 nb_policy.policy_name, customer.name, customer.vantive_id, 
                 customer.siebel_id, 
                 nbrp.job.job_id, nbrp.job.job_type, nbrp.job.job_state, 
                 nbrp.job.schedule_name, 
                 nbrp.job.schedule_type, nbrp.job.kbytes, nbrp.job.backup_type 
                   ORDER BY nb_policy.last_updated DESC) AS rn 
        FROM   nb_policy 
               left join customer 
                      ON nb_policy.customer_id = customer.customer_id 
               right join nbrp.job 
                       ON nb_policy.policy_name = nbrp.job.class_name 
        WHERE  customer.active = 1 
               AND ( customer.vantive_id > 0 
                      OR customer.siebel_id > 0 )) t 
WHERE  rn = 1

Answer 1

试试这个，将 /*list of fields on group*/ 更改为要显示最后一个值的一组列。

我编写了以下有效的查询，但是有大量重复项。我只想为所有字段获取一组值。我想获得的值集是与 LAST_UPDATED 中最新的 date/time 相对应的值。

SELECT * 
FROM   (SELECT nb_policy.last_updated, 
               nb_policy.policy_id, 
               nb_policy.policy_name, 
               customer.name, 
               customer.vantive_id, 
               customer.siebel_id, 
               nbrp.job.job_id, 
               nbrp.job.job_type, 
               nbrp.job.job_state, 
               nbrp.job.schedule_name, 
               nbrp.job.schedule_type, 
               nbrp.job.kbytes, 
               nbrp.job.backup_type, 
               Row_number() 
                 over ( 
                   PARTITION BY nb_policy.last_updated, nb_policy.policy_id, 
                 nb_policy.policy_name, customer.name, customer.vantive_id, 
                 customer.siebel_id, 
                 nbrp.job.job_id, nbrp.job.job_type, nbrp.job.job_state, 
                 nbrp.job.schedule_name, 
                 nbrp.job.schedule_type, nbrp.job.kbytes, nbrp.job.backup_type 
                   ORDER BY nb_policy.last_updated DESC) AS rn 
        FROM   nb_policy 
               left join customer 
                      ON nb_policy.customer_id = customer.customer_id 
               right join nbrp.job 
                       ON nb_policy.policy_name = nbrp.job.class_name 
        WHERE  customer.active = 1 
               AND ( customer.vantive_id > 0 
                      OR customer.siebel_id > 0 )) t 
WHERE  rn = 1

Oracle SQL - 从多个值的查询中选择最后更新的值

Oracle SQL - Pick last updated values from query for multiple values

sql

oracle

greatest-n-per-group