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geobabbler/vw_stops.sql

Created March 11, 2021 12:01
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  1. geobabbler created this gist Mar 11, 2021.
    35 changes: 35 additions & 0 deletions vw_stops.sql
    View file
    Original file line number Diff line number Diff line change
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    SELECT
    ARRAY_TO_STRING(ARRAY_AGG(CONCAT(st_x(q.loc),',',st_y(q.loc))), ';') AS coords
    FROM (
    WITH
    DATA AS (
    SELECT
    loc,
    resource_id,
    wkt,
    capture_date,
    (LAG(capture_date) OVER (PARTITION BY resource_id ORDER BY capture_date ASC)) AS prev_date,
    (LAG(wkt) OVER (PARTITION BY resource_id ORDER BY capture_date ASC)) AS prev_loc
    FROM (
    SELECT
    resource_id,
    loc,
    st_astext(loc) AS wkt,
    capture_date
    FROM
    `my_project.my_dataset.geo_sample`
    ORDER BY
    capture_date DESC) q
    ORDER BY
    capture_date )
    SELECT
    'Sample Asset' AS name,
    resource_id,
    loc,
    capture_date
    FROM
    DATA
    WHERE
    wkt<>prev_loc
    ORDER BY
    capture_date ASC) q