Mercurial > gemma

annotate schema/geoserver_views.sql @ 4002:eb11ada33fa7

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Avoid full sequential scans on some tables for every query Up to PostgreSQL 11, a CTE is always executed to completion, regardless of whether the result is actually needed for the calling query. A sub-select is not 'fenced' that way. Makes some database requests of GeoServer a lot faster.
author Tom Gottfried <tom@intevation.de>
date Thu, 18 Jul 2019 17:33:18 +0200
parents db87f34805fb
children 3fcb95a07948
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 CREATE OR REPLACE VIEW waterway.gauges_base_view AS
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2 SELECT
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3 g.location,
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4 isrs_asText(g.location) AS isrs_code,
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5 g.objname,
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6 g.geom,
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7 g.applicability_from_km,
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8 g.applicability_to_km,
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9 g.validity,
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10 g.zero_point,
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11 g.geodref,
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12 g.date_info,
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13 g.source_organization,
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14 g.erased,
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15 r.rwls AS reference_water_levels,
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16 wl.measure_date AS gm_measuredate,
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17 wl.water_level AS gm_waterlevel,
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18 wl_14d.n AS gm_n_14d,
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19 fca.forecast_accuracy_3d,
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20 fca.forecast_accuracy_1d
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21 FROM waterway.gauges g
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22 LEFT JOIN (SELECT location, validity,
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23 json_strip_nulls(json_object_agg(
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24 coalesce(depth_reference, 'empty'), value)) AS rwls
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25 FROM waterway.gauges_reference_water_levels
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26 GROUP BY location, validity) AS r
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27 USING (location, validity)
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28 LEFT JOIN (SELECT DISTINCT ON (location)
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29 location,
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30 measure_date,
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31 water_level
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32 FROM waterway.gauge_measurements
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33 ORDER BY location, measure_date DESC) AS wl
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34 USING (location)
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35 LEFT JOIN (SELECT location, count(water_level) AS n
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36 FROM waterway.gauge_measurements
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37 -- consider all measurements within 14 days plus a tolerance
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38 WHERE measure_date
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39 >= current_timestamp - '14 days 00:15'::interval
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40 GROUP BY location) AS wl_14d
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41 USING (location)
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42 LEFT JOIN (SELECT location,
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43 max(acc) FILTER (WHERE
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44 measure_date <= current_timestamp + '1 day'::interval)
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45 AS forecast_accuracy_1d,
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46 max(acc) AS forecast_accuracy_3d
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47 FROM waterway.gauge_predictions,
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48 GREATEST(water_level - lower(conf_interval),
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49 upper(conf_interval) - water_level) AS acc (acc)
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50 WHERE measure_date
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51 BETWEEN current_timestamp
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52 AND current_timestamp + '3 days'::interval
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53 GROUP BY location) AS fca
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54 USING (location);
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55
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56 CREATE OR REPLACE VIEW waterway.gauges_geoserver AS
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57 SELECT
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58 location,
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59 isrs_code,
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60 objname,
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61 geom,
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62 applicability_from_km,
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63 applicability_to_km,
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64 validity,
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65 zero_point,
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66 geodref,
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67 date_info,
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68 source_organization,
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69 reference_water_levels,
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70 gm_measuredate,
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71 gm_waterlevel,
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72 gm_n_14d,
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73 forecast_accuracy_3d,
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74 forecast_accuracy_1d
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75 FROM waterway.gauges_base_view
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76 WHERE NOT erased;
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77
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78 CREATE OR REPLACE VIEW waterway.distance_marks_geoserver AS
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79 SELECT location_code,
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80 isrs_asText(location_code) AS location,
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81 geom::Geometry(POINT, 4326),
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82 related_enc,
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83 (location_code).hectometre
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84 FROM waterway.distance_marks_virtual;
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85
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86 CREATE OR REPLACE VIEW waterway.distance_marks_ashore_geoserver AS
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87 SELECT id,
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88 country,
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89 geom::Geometry(POINT, 4326),
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90 related_enc,
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91 hectom,
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92 catdis,
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93 position_code
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94 FROM waterway.distance_marks;
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95
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96 CREATE OR REPLACE VIEW waterway.bottlenecks_geoserver AS
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97 SELECT
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98 b.id,
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99 b.bottleneck_id,
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100 b.objnam,
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101 b.nobjnm,
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102 b.stretch,
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103 b.area,
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104 b.rb,
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105 b.lb,
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106 b.responsible_country,
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107 b.revisiting_time,
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108 b.limiting,
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109 b.date_info,
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110 b.source_organization,
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111 g.location AS gauge_isrs_code,
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112 g.objname AS gauge_objname,
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113 g.reference_water_levels,
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114 fal.date_info AS fa_date_info,
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115 fal.critical AS fa_critical,
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116 g.gm_measuredate,
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117 g.gm_waterlevel,
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118 g.gm_n_14d,
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119 srl.date_max,
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120 g.forecast_accuracy_3d,
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121 g.forecast_accuracy_1d
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122 FROM waterway.bottlenecks b
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123 LEFT JOIN waterway.gauges_base_view g
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124 ON b.gauge_location = g.location AND b.gauge_validity = g.validity
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125 LEFT JOIN (SELECT DISTINCT ON (bottleneck_id)
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126 bottleneck_id, date_info, critical
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127 FROM waterway.fairway_availability
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128 ORDER BY bottleneck_id, date_info DESC) AS fal
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129 ON b.id = fal.bottleneck_id
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130 LEFT JOIN (SELECT DISTINCT ON (bottleneck_id)
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131 bottleneck_id, max(date_info) AS date_max
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132 FROM waterway.sounding_results
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133 GROUP BY bottleneck_id
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134 ORDER BY bottleneck_id DESC) AS srl
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135 ON b.bottleneck_id = srl.bottleneck_id
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136 WHERE b.validity @> current_timestamp;
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137
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138 CREATE OR REPLACE VIEW waterway.stretches_geoserver AS
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139 SELECT
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140 s.id,
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141 s.name,
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142 (s.stretch).lower::varchar as lower,
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143 (s.stretch).upper::varchar as upper,
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144 s.area::Geometry(MULTIPOLYGON, 4326),
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145 s.objnam,
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146 s.nobjnam,
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147 s.date_info,
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148 s.source_organization,
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149 (SELECT string_agg(country_code, ', ')
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150 FROM waterway.stretch_countries
3636
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151 WHERE stretches_id = s.id) AS countries,
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152 s.staging_done,
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153 min(g.gm_measuredate) AS gm_measuredate,
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154 min(g.gm_n_14d) AS gm_n_14d,
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155 max(g.forecast_accuracy_3d) AS forecast_accuracy_3d,
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156 max(g.forecast_accuracy_1d) AS forecast_accuracy_1d
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157 FROM waterway.stretches s
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158 LEFT JOIN waterway.gauges_geoserver g ON g.location <@ s.stretch
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159 GROUP BY s.id;
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160
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161 CREATE OR REPLACE VIEW waterway.sections_geoserver AS
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162 SELECT
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163 s.id,
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164 s.name,
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165 (s.section).lower::varchar as lower,
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166 (s.section).upper::varchar as upper,
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167 s.area::Geometry(MULTIPOLYGON, 4326),
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168 s.objnam,
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169 s.nobjnam,
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170 s.date_info,
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Tom Gottfried <tom@intevation.de>
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171 s.source_organization,
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Tom Gottfried <tom@intevation.de>
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172 s.staging_done,
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Tom Gottfried <tom@intevation.de>
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173 min(g.gm_measuredate) AS gm_measuredate,
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174 min(g.gm_n_14d) AS gm_n_14d,
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175 max(g.forecast_accuracy_3d) AS forecast_accuracy_3d,
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176 max(g.forecast_accuracy_1d) AS forecast_accuracy_1d
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177 FROM waterway.sections s
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178 LEFT JOIN waterway.gauges_geoserver g ON g.location <@ s.section
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179 GROUP BY s.id;
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180
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181 CREATE OR REPLACE VIEW waterway.sounding_results_contour_lines_geoserver AS
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182 SELECT bottleneck_id,
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183 date_info,
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Tom Gottfried <tom@intevation.de>
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184 height,
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Tom Gottfried <tom@intevation.de>
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185 CAST(lines AS geometry(multilinestring, 4326)) AS lines
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
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186 FROM waterway.sounding_results_contour_lines cl
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187 JOIN waterway.sounding_results sr ON sr.id = cl.sounding_result_id;
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Tom Gottfried <tom@intevation.de>
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188
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
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189 CREATE OR REPLACE VIEW waterway.bottleneck_overview AS
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
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190 SELECT
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191 objnam AS name,
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192 ST_Centroid(area)::Geometry(POINT, 4326) AS point,
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193 (lower(stretch)).hectometre AS from,
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Tom Gottfried <tom@intevation.de>
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194 (upper(stretch)).hectometre AS to,
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195 sr.current::text,
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196 responsible_country
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197 FROM waterway.bottlenecks bn LEFT JOIN (
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
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198 SELECT bottleneck_id, max(date_info) AS current
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
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199 FROM waterway.sounding_results
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200 GROUP BY bottleneck_id) sr ON sr.bottleneck_id = bn.bottleneck_id
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201 WHERE bn.validity @> current_timestamp
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202 ORDER BY objnam;
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
Tom Gottfried <tom@intevation.de>
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203
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
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204 CREATE OR REPLACE VIEW waterway.sounding_differences AS
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
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205 SELECT
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206 sd.id AS id,
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207 bn.objnam AS objnam,
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208 srm.date_info AS minuend,
f394e828a6d2 Separate view definitions for GeoServer from general schema definition
Tom Gottfried <tom@intevation.de>
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209 srs.date_info AS subtrahend,
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210 sdcl.height AS height,
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211 CAST(sdcl.lines AS geometry(multilinestring, 4326)) AS lines
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212 FROM caching.sounding_differences sd
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213 JOIN caching.sounding_differences_contour_lines sdcl
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214 ON sd.id = sdcl.sounding_differences_id
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Tom Gottfried <tom@intevation.de>
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215 JOIN waterway.sounding_results srm
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216 ON sd.minuend = srm.id
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Tom Gottfried <tom@intevation.de>
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217 JOIN waterway.sounding_results srs
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Tom Gottfried <tom@intevation.de>
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218 ON sd.subtrahend = srs.id
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Tom Gottfried <tom@intevation.de>
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219 JOIN waterway.bottlenecks bn
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220 ON srm.bottleneck_id = bn.bottleneck_id
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221 AND srm.bottleneck_validity = bn.validity;