I am suffering from Bigquery with StandardSQL joining method












0















I would like to use the following two tables (POS and STAY) with Bigquery's StandardSQL to produce the following results. However, the join part of the third line is not successful. Please tell me a nice way.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 2 r1 B

##dt = date type


This is the query I wrote.



WITH POS AS(
select 1 as dt,"r1" as rm,100 as total
UNION ALL
select 2 as dt,"r1" as rm,100 as total
UNION ALL
select 3 as dt,"r1" as rm,100 as total
),
STAY AS(
select 1 as dt,"r1" as rm,"A" as rank
UNION ALL
select 2 as dt,"r1" as rm,"B" as rank
)
SELECT
p.*,
s.dt as s_dt,
s.rm as s_rm,
s.rank as s_rank
FROM
POS as p
LEFT JOIN
STAY as s
ON
p.dt = s.dt
and
p.rm = s.rm




This is the result.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 null null null









share|improve this question

























  • Can you clarify why you expect the values from second table in row 3 of the result. What is the logic behind it?

    – Mikhail Berlyant
    Nov 21 '18 at 5:24











  • I analyzed POS data in connection with accommodation data. The last purchase is a purchase after the last staying day, but I want to put it in the last staying day.

    – Mitsuhiro Okuda
    Nov 21 '18 at 7:24
















0















I would like to use the following two tables (POS and STAY) with Bigquery's StandardSQL to produce the following results. However, the join part of the third line is not successful. Please tell me a nice way.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 2 r1 B

##dt = date type


This is the query I wrote.



WITH POS AS(
select 1 as dt,"r1" as rm,100 as total
UNION ALL
select 2 as dt,"r1" as rm,100 as total
UNION ALL
select 3 as dt,"r1" as rm,100 as total
),
STAY AS(
select 1 as dt,"r1" as rm,"A" as rank
UNION ALL
select 2 as dt,"r1" as rm,"B" as rank
)
SELECT
p.*,
s.dt as s_dt,
s.rm as s_rm,
s.rank as s_rank
FROM
POS as p
LEFT JOIN
STAY as s
ON
p.dt = s.dt
and
p.rm = s.rm




This is the result.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 null null null









share|improve this question

























  • Can you clarify why you expect the values from second table in row 3 of the result. What is the logic behind it?

    – Mikhail Berlyant
    Nov 21 '18 at 5:24











  • I analyzed POS data in connection with accommodation data. The last purchase is a purchase after the last staying day, but I want to put it in the last staying day.

    – Mitsuhiro Okuda
    Nov 21 '18 at 7:24














0












0








0


1






I would like to use the following two tables (POS and STAY) with Bigquery's StandardSQL to produce the following results. However, the join part of the third line is not successful. Please tell me a nice way.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 2 r1 B

##dt = date type


This is the query I wrote.



WITH POS AS(
select 1 as dt,"r1" as rm,100 as total
UNION ALL
select 2 as dt,"r1" as rm,100 as total
UNION ALL
select 3 as dt,"r1" as rm,100 as total
),
STAY AS(
select 1 as dt,"r1" as rm,"A" as rank
UNION ALL
select 2 as dt,"r1" as rm,"B" as rank
)
SELECT
p.*,
s.dt as s_dt,
s.rm as s_rm,
s.rank as s_rank
FROM
POS as p
LEFT JOIN
STAY as s
ON
p.dt = s.dt
and
p.rm = s.rm




This is the result.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 null null null









share|improve this question
















I would like to use the following two tables (POS and STAY) with Bigquery's StandardSQL to produce the following results. However, the join part of the third line is not successful. Please tell me a nice way.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 2 r1 B

##dt = date type


This is the query I wrote.



WITH POS AS(
select 1 as dt,"r1" as rm,100 as total
UNION ALL
select 2 as dt,"r1" as rm,100 as total
UNION ALL
select 3 as dt,"r1" as rm,100 as total
),
STAY AS(
select 1 as dt,"r1" as rm,"A" as rank
UNION ALL
select 2 as dt,"r1" as rm,"B" as rank
)
SELECT
p.*,
s.dt as s_dt,
s.rm as s_rm,
s.rank as s_rank
FROM
POS as p
LEFT JOIN
STAY as s
ON
p.dt = s.dt
and
p.rm = s.rm




This is the result.



    dt  rm  total   s_dt    s_rm    s_rank
1 1 r1 100 1 r1 A
2 2 r1 100 2 r1 B
3 3 r1 100 null null null






google-bigquery






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share|improve this question













share|improve this question




share|improve this question








edited Nov 21 '18 at 8:09







Mitsuhiro Okuda

















asked Nov 21 '18 at 4:36









Mitsuhiro OkudaMitsuhiro Okuda

12




12













  • Can you clarify why you expect the values from second table in row 3 of the result. What is the logic behind it?

    – Mikhail Berlyant
    Nov 21 '18 at 5:24











  • I analyzed POS data in connection with accommodation data. The last purchase is a purchase after the last staying day, but I want to put it in the last staying day.

    – Mitsuhiro Okuda
    Nov 21 '18 at 7:24



















  • Can you clarify why you expect the values from second table in row 3 of the result. What is the logic behind it?

    – Mikhail Berlyant
    Nov 21 '18 at 5:24











  • I analyzed POS data in connection with accommodation data. The last purchase is a purchase after the last staying day, but I want to put it in the last staying day.

    – Mitsuhiro Okuda
    Nov 21 '18 at 7:24

















Can you clarify why you expect the values from second table in row 3 of the result. What is the logic behind it?

– Mikhail Berlyant
Nov 21 '18 at 5:24





Can you clarify why you expect the values from second table in row 3 of the result. What is the logic behind it?

– Mikhail Berlyant
Nov 21 '18 at 5:24













I analyzed POS data in connection with accommodation data. The last purchase is a purchase after the last staying day, but I want to put it in the last staying day.

– Mitsuhiro Okuda
Nov 21 '18 at 7:24





I analyzed POS data in connection with accommodation data. The last purchase is a purchase after the last staying day, but I want to put it in the last staying day.

– Mitsuhiro Okuda
Nov 21 '18 at 7:24












1 Answer
1






active

oldest

votes


















0














I did it



WITH POS AS(
select 1 as dt,"r1" as rm,100 as total
UNION ALL
select 2 as dt,"r1" as rm,100 as total
UNION ALL
select 3 as dt,"r1" as rm,100 as total

),
STAY AS(
select 1 as dt,"r1" as rm,"A" as rank
UNION ALL
select 2 as dt,"r1" as rm,"B" as rank
),
POS_STAY as(
SELECT
p.*,
s.dt as s_dt,
s.rm as s_rm,
s.rank as s_rank,
if(p.dt = s.dt,1,0) as flag,
max(if(p.dt = s.dt,1,0)) over (PARTITION BY p.dt) as dt_flag,
max(s.dt) over (PARTITION BY p.dt) as max_s_dt_flag
FROM
POS as p
CROSS JOIN
STAY as s
)
select
*
from
POS_STAY
WHERE
flag = 1 or (dt_flag = 0 and s_dt = max_s_dt_flag)


This is the result.



    dt  rm  total   s_dt    s_rm    s_rank  flag    dt_flag max_s_dt_flag
1 1 r1 100 1 r1 A 1 1 2
2 2 r1 100 2 r1 B 1 1 2
3 3 r1 100 2 r1 B 0 0 2





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    1 Answer
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    1 Answer
    1






    active

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    0














    I did it



    WITH POS AS(
    select 1 as dt,"r1" as rm,100 as total
    UNION ALL
    select 2 as dt,"r1" as rm,100 as total
    UNION ALL
    select 3 as dt,"r1" as rm,100 as total

    ),
    STAY AS(
    select 1 as dt,"r1" as rm,"A" as rank
    UNION ALL
    select 2 as dt,"r1" as rm,"B" as rank
    ),
    POS_STAY as(
    SELECT
    p.*,
    s.dt as s_dt,
    s.rm as s_rm,
    s.rank as s_rank,
    if(p.dt = s.dt,1,0) as flag,
    max(if(p.dt = s.dt,1,0)) over (PARTITION BY p.dt) as dt_flag,
    max(s.dt) over (PARTITION BY p.dt) as max_s_dt_flag
    FROM
    POS as p
    CROSS JOIN
    STAY as s
    )
    select
    *
    from
    POS_STAY
    WHERE
    flag = 1 or (dt_flag = 0 and s_dt = max_s_dt_flag)


    This is the result.



        dt  rm  total   s_dt    s_rm    s_rank  flag    dt_flag max_s_dt_flag
    1 1 r1 100 1 r1 A 1 1 2
    2 2 r1 100 2 r1 B 1 1 2
    3 3 r1 100 2 r1 B 0 0 2





    share|improve this answer




























      0














      I did it



      WITH POS AS(
      select 1 as dt,"r1" as rm,100 as total
      UNION ALL
      select 2 as dt,"r1" as rm,100 as total
      UNION ALL
      select 3 as dt,"r1" as rm,100 as total

      ),
      STAY AS(
      select 1 as dt,"r1" as rm,"A" as rank
      UNION ALL
      select 2 as dt,"r1" as rm,"B" as rank
      ),
      POS_STAY as(
      SELECT
      p.*,
      s.dt as s_dt,
      s.rm as s_rm,
      s.rank as s_rank,
      if(p.dt = s.dt,1,0) as flag,
      max(if(p.dt = s.dt,1,0)) over (PARTITION BY p.dt) as dt_flag,
      max(s.dt) over (PARTITION BY p.dt) as max_s_dt_flag
      FROM
      POS as p
      CROSS JOIN
      STAY as s
      )
      select
      *
      from
      POS_STAY
      WHERE
      flag = 1 or (dt_flag = 0 and s_dt = max_s_dt_flag)


      This is the result.



          dt  rm  total   s_dt    s_rm    s_rank  flag    dt_flag max_s_dt_flag
      1 1 r1 100 1 r1 A 1 1 2
      2 2 r1 100 2 r1 B 1 1 2
      3 3 r1 100 2 r1 B 0 0 2





      share|improve this answer


























        0












        0








        0







        I did it



        WITH POS AS(
        select 1 as dt,"r1" as rm,100 as total
        UNION ALL
        select 2 as dt,"r1" as rm,100 as total
        UNION ALL
        select 3 as dt,"r1" as rm,100 as total

        ),
        STAY AS(
        select 1 as dt,"r1" as rm,"A" as rank
        UNION ALL
        select 2 as dt,"r1" as rm,"B" as rank
        ),
        POS_STAY as(
        SELECT
        p.*,
        s.dt as s_dt,
        s.rm as s_rm,
        s.rank as s_rank,
        if(p.dt = s.dt,1,0) as flag,
        max(if(p.dt = s.dt,1,0)) over (PARTITION BY p.dt) as dt_flag,
        max(s.dt) over (PARTITION BY p.dt) as max_s_dt_flag
        FROM
        POS as p
        CROSS JOIN
        STAY as s
        )
        select
        *
        from
        POS_STAY
        WHERE
        flag = 1 or (dt_flag = 0 and s_dt = max_s_dt_flag)


        This is the result.



            dt  rm  total   s_dt    s_rm    s_rank  flag    dt_flag max_s_dt_flag
        1 1 r1 100 1 r1 A 1 1 2
        2 2 r1 100 2 r1 B 1 1 2
        3 3 r1 100 2 r1 B 0 0 2





        share|improve this answer













        I did it



        WITH POS AS(
        select 1 as dt,"r1" as rm,100 as total
        UNION ALL
        select 2 as dt,"r1" as rm,100 as total
        UNION ALL
        select 3 as dt,"r1" as rm,100 as total

        ),
        STAY AS(
        select 1 as dt,"r1" as rm,"A" as rank
        UNION ALL
        select 2 as dt,"r1" as rm,"B" as rank
        ),
        POS_STAY as(
        SELECT
        p.*,
        s.dt as s_dt,
        s.rm as s_rm,
        s.rank as s_rank,
        if(p.dt = s.dt,1,0) as flag,
        max(if(p.dt = s.dt,1,0)) over (PARTITION BY p.dt) as dt_flag,
        max(s.dt) over (PARTITION BY p.dt) as max_s_dt_flag
        FROM
        POS as p
        CROSS JOIN
        STAY as s
        )
        select
        *
        from
        POS_STAY
        WHERE
        flag = 1 or (dt_flag = 0 and s_dt = max_s_dt_flag)


        This is the result.



            dt  rm  total   s_dt    s_rm    s_rank  flag    dt_flag max_s_dt_flag
        1 1 r1 100 1 r1 A 1 1 2
        2 2 r1 100 2 r1 B 1 1 2
        3 3 r1 100 2 r1 B 0 0 2






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 22 '18 at 7:24









        Mitsuhiro OkudaMitsuhiro Okuda

        12




        12
































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