oracle中缺少行

Question

SELECT * 
FROM 
(
    SELECT stat, 
           SUM(DECODE(visa_country,'US',1,0)) AS USA,
           SUM(DECODE(visa_country,'United Kingdom',1,0)) AS UK,
           SUM(DECODE(visa_country,'Australia',1,0)) AS Australia,
           SUM(DECODE(visa_country,'Canada',1,0)) AS Canada,
           SUM(DECODE(visa_country,'Switzerland',1,0)) AS Switzerland,
           SUM(DECODE(visa_country,'Singapore',1,0)) AS Singapore,
           SUM(DECODE(visa_country,'Sweden',1,0)) AS Sweden,
           SUM(DECODE(visa_country,'Netherlands',1,0)) AS Netherlands
    FROM 
    (
        SELECT * 
        FROM
        (
            SELECT  stat,
                    visa_country,
                    DECODE(stat,'>= 0 '||'&'||' < 15', 1
                               ,'>= 15 '||'&'||' < 30',2
                               ,'>= 30 '||'&'||' < 45',3
                               ,'>= 45 '||'&'||' < 60',4
                               ,'>= 60 '||'&'||' < 75',5
                               ,'>= 75 '||'&'||' < 90',6
                               ,' >= 90',7) AS gr
            FROM (
                SELECT  end_date,
                        visa_country,
                        CASE WHEN END_DATE between 0 and 14 THEN '>= 0 '||'&'||' < 15'
                             WHEN END_DATE BETWEEN 15 AND 29 THEN '>= 15 '||'&'||' < 30'
                             WHEN END_DATE BETWEEN 30 AND 44 THEN '>= 30 '||'&'||' < 45'
                             WHEN END_DATE BETWEEN 45 AND 59 THEN '>= 45 '||'&'||' < 60'
                             WHEN END_DATE BETWEEN 60 AND 74 THEN '>= 60 '||'&'||' < 75'
                             WHEN END_DATE BETWEEN 75 AND 89 THEN '>= 75 '||'&'||' < 90'
                             WHEN END_DATE > 90 THEN  ' >= 90'   
                        END AS stat
                FROM 
                (
                    SELECT  visa_country,
                            GREATEST(
                                        NVL(TO_DATE(VP.WP_VALID_TILL,'DD-MON-YY'),TO_DATE(SYSDATE,'DD-MON-YY')),
                                        NVL(TO_DATE(VP.VISA_VALID_TILL,'DD-MON-YY'),to_DATE(SYSDATE,'DD-MON-YY'))
                                    )
                            - TO_DATE(SYSDATE,'DD-MON-YY') AS END_DATE 
                    FROM visa_prac AS vp 
                )
            ) AS x
            WHERE x.end_date > 0
        )       
    )  GROUP BY stat
    ORDER BY gr
)

这是给出员工数量的代码......但这里的问题是，如果任何计数为零，它不会显示整行......

假设没有任何细节在 >=75 &

将不胜感激您的帮助解决它。

Answer 1

我认为您需要删除 END 中的 WHERE 子句

WHERE x.end_date >0

因为它在零的情况下过滤掉了行。

select * from 
  (
      select stat, sum(decode(visa_country,'US',1,0))USA,
             sum(decode(visa_country,'United Kingdom',1,0))UK,
             sum(decode(visa_country,'Australia',1,0))Australia,
             sum(decode(visa_country,'Canada',1,0)) Canada,
             sum(decode(visa_country,'Switzerland',1,0))Switzerland,
             sum(decode(visa_country,'Singapore',1,0))Singapore,
             sum(decode(visa_country,'Sweden',1,0))Sweden,
             sum(decode(visa_country,'Netherlands',1,0))Netherlands
      from 
            (
            select * FROM
                (
                  SELECT stat,visa_country,DECODE(stat,'>= 0 '||'&'||' < 15',1,'>= 15 '||'&'||' < 30',2,'>= 30 '||'&'||' < 45',3,'>= 45 '||'&'||' < 60',4,'>= 60 '||'&'||' < 75' ,5,'>= 75 '||'&'||' < 90' ,6,' >= 90',7)gr
                    from (
                            select end_date,visa_country,case when END_DATE between 0 and 14 THEN '>= 0 '||'&'||' < 15'
                              when END_DATE BETWEEN 15 AND 29 THEN '>= 15 '||'&'||' < 30'
                              When END_DATE BETWEEN 30 AND 44 THEN '>= 30 '||'&'||' < 45'
                              When END_DATE BETWEEN 45 AND 59 THEN '>= 45 '||'&'||' < 60'
                              When END_DATE BETWEEN 60 AND 74 THEN '>= 60 '||'&'||' < 75'
                              When END_DATE BETWEEN 75 AND 89 THEN '>= 75 '||'&'||' < 90'
                              When END_DATE > 90 THEN  ' >= 90'   
                                 END stat
                          from (select visa_country,GREATEST(nvl(TO_DATE(VP.WP_VALID_TILL,'DD-MON-YY'),to_DATE(sysdate,'DD-MON-YY')),NVL(TO_DATE(VP.VISA_VALID_TILL,'DD-MON-YY'),to_DATE(sysdate,'DD-MON-YY')))
                          -to_DATE(sysdate,'DD-MON-YY') AS END_DATE from visa_prac vp )

                          )x 
                )   
            )  group by stat
            order by gr
  )