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Added materialized views based data quality report
author Sascha Wilde <wilde@intevation.de>
date Fri, 02 Jul 2021 18:56:59 +0200
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children 1dd63a2405bc
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5390
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1 -- This is Free Software under GNU Affero General Public License v >= 3.0
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2 -- without warranty, see README.md and license for details.
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3
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4 -- SPDX-License-Identifier: AGPL-3.0-or-later
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5 -- License-Filename: LICENSES/AGPL-3.0.txt
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6
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7 -- Copyright (C) 2021 by via donau
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8 -- – Österreichische Wasserstraßen-Gesellschaft mbH
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9 -- Software engineering by Intevation GmbH
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10
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11 -- Author(s):
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12 -- * Sascha Wilde <sascha.wilde@intevation.de>
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13
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14
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15 -- Materialized Views with statistical data for data quality reports
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16 CREATE MATERIALIZED VIEW waterway.dqr_gauge_stats AS
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17 WITH d AS ( SELECT ym::date, d::date
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18 FROM generate_series( '2019-10-01'::date,
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19 now() - interval '1 day',
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20 '1 month'::interval ) ym,
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21 generate_series( ym,
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22 ( ym + interval '1 month'
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23 - interval '1 day'),
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24 '1 day'::interval ) d ),
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25 g AS ( SELECT d.ym, d.d AS day, (location).country_code AS cc,
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26 objname, array_agg(distinct(location)) AS locations
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27 FROM waterway.gauges,d
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28 GROUP BY objname,d.d,(location).country_code,d.ym ),
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29 measure AS (
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30 SELECT g.ym, g.cc, g.objname, g.day,
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31 CASE WHEN count(measure_date) = 0
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32 THEN 1 ELSE 0 END AS missing
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33 FROM g
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34 LEFT OUTER JOIN waterway.gauge_measurements gm
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35 ON ARRAY[location] <@ g.locations
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36 AND g.day <= measure_date
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37 AND measure_date < (g.day + interval '1 day')
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38 GROUP BY g.objname,g.day,g.ym,g.cc )
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39 SELECT cc, ym AS month, objname, sum(missing) AS daynodata
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40 FROM measure
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41 GROUP BY cc, ym, objname;
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42
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43 CREATE MATERIALIZED VIEW waterway.dqr_bottleneck_stats AS
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44 WITH d AS ( SELECT ym::date
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45 FROM generate_series( '2019-10-01'::date,
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46 now() - interval '1 day',
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47 '1 month'::interval ) ym),
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48 bn AS ( SELECT DISTINCT objnam, responsible_country AS cc
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49 FROM waterway.bottlenecks ),
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50 bid AS (SELECT objnam, array_agg(distinct(bottleneck_id)) AS ids
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51 FROM waterway.bottlenecks GROUP BY objnam)
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52 SELECT bn.cc, d.ym AS month, bid.objnam,
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53 COALESCE(count(distinct(sr.date_info)),0) AS srcnt,
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54 COALESCE(count(distinct(efa.measure_date)),0) AS fwacnt
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55 FROM bn, bid
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56 CROSS JOIN d
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57 LEFT OUTER JOIN waterway.sounding_results sr
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58 ON ARRAY[sr.bottleneck_id] <@ bid.ids
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59 AND d.ym <= sr.date_info
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60 AND sr.date_info < (d.ym + interval '1 month')
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61 LEFT OUTER JOIN waterway.fairway_availability fa
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62 ON ARRAY[fa.bottleneck_id] <@ bid.ids
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63 LEFT OUTER JOIN waterway.effective_fairway_availability efa
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64 ON fairway_availability_id = fa.id
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65 AND d.ym <= efa.measure_date
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66 AND efa.measure_date < (d.ym + interval '1 month')
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67 AND efa.measure_type = 'Measured'
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68 WHERE bid.objnam = bn.objnam
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69 GROUP BY bn.cc, d.ym, bid.objnam;
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70
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71
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72 -- Config update statement
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73
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74 -- TODO
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75 --
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76 -- INSERT INTO sys_admin.stats_updates
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77 -- VALUES ('Data quality report',
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78 -- 'REFRESH MATERIALIZED VIEW waterway.dqr_bottleneck_stats;
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79 -- REFRESH MATERIALIZED VIEW waterway.dqr_gauge_stats;');
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80 --
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81 -- THIS DOES _NOT_ WORK!
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82 -- To make this work we need a wrapper function with owner rights for
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83 -- the refresh, as (from the PGSQL manual): "REFRESH MATERIALIZED VIEW
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84 -- completely replaces the contents of a materialized view. To execute
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85 -- this command you must be the owner of the materialized view.""