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<!DOCTYPE html>
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<meta name="author" content="Ben Best">
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<title>Database Views</title>
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<header id="title-block-header" class="quarto-title-block default">
<div class="quarto-title">
<h1 class="title">Database Views</h1>
</div>
<div class="quarto-title-meta">
<div>
<div class="quarto-title-meta-heading">Author</div>
<div class="quarto-title-meta-contents">
<p>Ben Best </p>
</div>
</div>
<div>
<div class="quarto-title-meta-heading">Published</div>
<div class="quarto-title-meta-contents">
<p class="date">December 6, 2022</p>
</div>
</div>
<div>
<div class="quarto-title-meta-heading">Modified</div>
<div class="quarto-title-meta-contents">
<p class="date-modified">December 6, 2022</p>
</div>
</div>
</div>
</header>
<section id="overview" class="level2">
<h2 class="anchored" data-anchor-id="overview">Overview</h2>
<p>These databaase views make common queries easier by consolidating related tables. A regular <code>VIEW</code> is executed every time it’s called whereas a <code>MATERIALIZED VIEW</code> is cached and instantly available like a table.</p>
<p>By generating these views with this Quarto document, you’ll see when it was last rendered with the “MODIFIED” date stamp and any other diagnostic information can be displayed as a versioned record in Github.</p>
</section>
<section id="view_ctd_casts" class="level2">
<h2 class="anchored" data-anchor-id="view_ctd_casts"><code>view_ctd_casts</code></h2>
<div class="cell">
<div class="sourceCode cell-code" id="cb1"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="co"># load latest dev version of calcofi4r from parent folder</span></span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a>devtools<span class="sc">::</span><span class="fu">load_all</span>(here<span class="sc">::</span><span class="fu">here</span>(<span class="st">"../calcofi4r"</span>))</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>ℹ Loading calcofi4r</code></pre>
</div>
<div class="sourceCode cell-code" id="cb3"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="co"># get database connection (con)</span></span>
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a>con <span class="ot"><-</span> <span class="fu">cc_db_connect</span>()</span>
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a><span class="co"># list tables in db</span></span>
<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a><span class="fu">dbListTables</span>(con)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stdout">
<pre><code> [1] "geography_columns" "geometry_columns"
[3] "spatial_ref_sys" "field_labels"
[5] "krill_abundances" "stations_order"
[7] "r_sta_cnt" "species_groups"
[9] "dissolved_inorganic_carbon" "ctd_bottles"
[11] "ctd_casts" "egg_counts"
[13] "larvae_counts" "scrippscast"
[15] "species_codes" "stations"
[17] "taxa_hierarchy" "tow_types"
[19] "tsn_list" "tows"
[21] "stations_hull" "aoi_fed_sanctuaries"
[23] "grd_a" "ships"
[25] "grd_mer" "r_mer100km"
[27] "stations_new" "tows_new"
[29] "raster_columns" "raster_overviews"
[31] "test_rast" "cruises"
[33] "effort_zones" "effort_grid"
[35] "effort_ctrs" "effort_areas"
[37] "places" </code></pre>
</div>
<div class="sourceCode cell-code" id="cb5"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="co"># preview tables used for input</span></span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="fu">tbl</span>(con, <span class="st">"ctd_casts"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stdout">
<pre><code># Source: table<ctd_casts> [?? x 62]
# Database: postgres [admin@localhost:5432/gis]
cast_c…¹ cruis…² cruise cruz_…³ dbsta…⁴ castid sta_id quarter sta_c…⁵ dista…⁶
<int> <chr> <chr> <chr> <chr> <chr> <chr> <int> <chr> <dbl>
1 25686 1988-0… 198809 198809… 9000730 19-88… 090.0… 3 NST -182.
2 1 1949-0… 194903 194903… 5400560 19-49… 054.0… 1 NST NA
3 2 1949-0… 194903 194903… 5200750 19-49… 052.0… 1 NST NA
4 3 1949-0… 194903 194903… 5100850 19-49… 051.0… 1 NST NA
5 4 1949-0… 194903 194903… 5000950 19-49… 050.0… 1 NST NA
6 5 1949-0… 194903 194903… 5001040 19-49… 050.0… 1 NST NA
7 6 1949-0… 194903 194903… 4901140 19-49… 049.0… 1 NST NA
8 7 1949-0… 194903 194903… 5671460 19-49… 056.7… 1 NST NA
9 8 1949-0… 194903 194903… 5671360 19-49… 056.7… 1 NST NA
10 9 1949-0… 194903 194903… 5801270 19-49… 058.0… 1 NST NA
# … with more rows, 52 more variables: date <date>, year <int>, month <int>,
# juliandate <int>, julianday <int>, time <time>, latitude <dbl>,
# latdeg <int>, latmin <dbl>, lathem <chr>, longitude <dbl>, londeg <int>,
# lonmin <dbl>, lonhem <chr>, rptline <dbl>, stline <dbl>, acline <dbl>,
# rptsta <dbl>, ststa <dbl>, acsta <dbl>, bottomdepth <dbl>, secchi <int>,
# foreiu <int>, shipname <chr>, shipcode <chr>, datatype <chr>,
# orderocc <int>, eventnum <int>, cruzleg <int>, origstaid <chr>, …</code></pre>
</div>
<div class="sourceCode cell-code" id="cb7"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="co"># preview tables used for input</span></span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a><span class="fu">tbl</span>(con, <span class="st">"effort_grid"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stdout">
<pre><code># Source: table<effort_grid> [?? x 7]
# Database: postgres [admin@localhost:5432/gis]
sta_key sta_lin sta_pos sta_dpos sta_shore sta_pattern geom
<chr> <int> <int> <int> <chr> <chr> <pq_gmtry>
1 10,0 10 0 20 nearshore historical 0103000020E6100000010…
2 10,20 10 20 20 nearshore historical 0103000020E6100000010…
3 10,40 10 40 20 nearshore historical 0103000020E6100000010…
4 10,60 10 60 20 nearshore historical 0103000020E6100000010…
5 10,80 10 80 20 offshore historical 0103000020E6100000010…
6 10,100 10 100 20 offshore historical 0103000020E6100000010…
7 20,0 20 0 20 nearshore historical 0103000020E6100000040…
8 20,20 20 20 20 nearshore historical 0103000020E6100000010…
9 20,40 20 40 20 nearshore historical 0103000020E6100000010…
10 20,60 20 60 20 nearshore historical 0103000020E6100000010…
# … with more rows</code></pre>
</div>
<div class="sourceCode cell-code" id="cb9"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="co"># create view</span></span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="fu">dbSendQuery</span>(</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a> con, </span>
<span id="cb9-4"><a href="#cb9-4" aria-hidden="true" tabindex="-1"></a> <span class="st">"DROP MATERIALIZED VIEW IF EXISTS view_ctd_casts"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL DROP MATERIALIZED VIEW IF EXISTS view_ctd_casts
ROWS Fetched: 0 [complete]
Changed: 0</code></pre>
</div>
<div class="sourceCode cell-code" id="cb11"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">dbSendQuery</span>(</span>
<span id="cb11-2"><a href="#cb11-2" aria-hidden="true" tabindex="-1"></a> con,</span>
<span id="cb11-3"><a href="#cb11-3" aria-hidden="true" tabindex="-1"></a> <span class="st">"CREATE MATERIALIZED VIEW view_ctd_casts AS</span></span>
<span id="cb11-4"><a href="#cb11-4" aria-hidden="true" tabindex="-1"></a><span class="st"> SELECT </span></span>
<span id="cb11-5"><a href="#cb11-5" aria-hidden="true" tabindex="-1"></a><span class="st"> c.*, </span></span>
<span id="cb11-6"><a href="#cb11-6" aria-hidden="true" tabindex="-1"></a><span class="st"> g.sta_shore AS grid_shore, sta_pattern AS grid_pattern, sta_key AS grid_key, </span></span>
<span id="cb11-7"><a href="#cb11-7" aria-hidden="true" tabindex="-1"></a><span class="st"> g.sta_lin AS grid_lin, g.sta_pos AS grid_pos</span></span>
<span id="cb11-8"><a href="#cb11-8" aria-hidden="true" tabindex="-1"></a><span class="st"> FROM ctd_casts AS c</span></span>
<span id="cb11-9"><a href="#cb11-9" aria-hidden="true" tabindex="-1"></a><span class="st"> JOIN effort_grid AS g</span></span>
<span id="cb11-10"><a href="#cb11-10" aria-hidden="true" tabindex="-1"></a><span class="st"> ON ST_Contains(g.geom, c.geom)"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>Warning in result_create(conn@ptr, statement, immediate): Closing open result
set, cancelling previous query</code></pre>
</div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL CREATE MATERIALIZED VIEW view_ctd_casts AS
SELECT
c.*,
g.sta_shore AS grid_shore, sta_pattern AS grid_pattern, sta_key AS grid_key,
g.sta_lin AS grid_lin, g.sta_pos AS grid_pos
FROM ctd_casts AS c
JOIN effort_grid AS g
ON ST_Contains(g.geom, c.geom)
ROWS Fetched: 0 [complete]
Changed: 35078</code></pre>
</div>
<div class="sourceCode cell-code" id="cb14"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a><span class="fu">tbl</span>(con, <span class="st">"view_ctd_casts"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>Warning in result_create(conn@ptr, statement, immediate): Closing open result
set, cancelling previous query</code></pre>
</div>
<div class="cell-output cell-output-stdout">
<pre><code># Source: table<view_ctd_casts> [?? x 67]
# Database: postgres [admin@localhost:5432/gis]
cast_c…¹ cruis…² cruise cruz_…³ dbsta…⁴ castid sta_id quarter sta_c…⁵ dista…⁶
<int> <chr> <chr> <chr> <chr> <chr> <chr> <int> <chr> <dbl>
1 25686 1988-0… 198809 198809… 9000730 19-88… 090.0… 3 NST -182.
2 1 1949-0… 194903 194903… 5400560 19-49… 054.0… 1 NST NA
3 2 1949-0… 194903 194903… 5200750 19-49… 052.0… 1 NST NA
4 3 1949-0… 194903 194903… 5100850 19-49… 051.0… 1 NST NA
5 4 1949-0… 194903 194903… 5000950 19-49… 050.0… 1 NST NA
6 5 1949-0… 194903 194903… 5001040 19-49… 050.0… 1 NST NA
7 6 1949-0… 194903 194903… 4901140 19-49… 049.0… 1 NST NA
8 7 1949-0… 194903 194903… 5671460 19-49… 056.7… 1 NST NA
9 8 1949-0… 194903 194903… 5671360 19-49… 056.7… 1 NST NA
10 9 1949-0… 194903 194903… 5801270 19-49… 058.0… 1 NST NA
# … with more rows, 57 more variables: date <date>, year <int>, month <int>,
# juliandate <int>, julianday <int>, time <time>, latitude <dbl>,
# latdeg <int>, latmin <dbl>, lathem <chr>, longitude <dbl>, londeg <int>,
# lonmin <dbl>, lonhem <chr>, rptline <dbl>, stline <dbl>, acline <dbl>,
# rptsta <dbl>, ststa <dbl>, acsta <dbl>, bottomdepth <dbl>, secchi <int>,
# foreiu <int>, shipname <chr>, shipcode <chr>, datatype <chr>,
# orderocc <int>, eventnum <int>, cruzleg <int>, origstaid <chr>, …</code></pre>
</div>
<div class="sourceCode cell-code" id="cb17"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb17-1"><a href="#cb17-1" aria-hidden="true" tabindex="-1"></a><span class="fu">create_index</span>(con, <span class="st">"view_ctd_casts"</span>, <span class="st">"cast_count"</span>, <span class="at">is_unique=</span>T)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL CREATE UNIQUE INDEX IF NOT EXISTS view_ctd_casts_cast_count_idx ON view_ctd_casts(cast_count)
ROWS Fetched: 0 [complete]
Changed: 0</code></pre>
</div>
<div class="sourceCode cell-code" id="cb19"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb19-1"><a href="#cb19-1" aria-hidden="true" tabindex="-1"></a><span class="fu">create_index</span>(con, <span class="st">"view_ctd_casts"</span>, <span class="st">"geom"</span>, <span class="at">is_geom=</span>T)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>Warning in result_create(conn@ptr, statement, immediate): Closing open result
set, cancelling previous query</code></pre>
</div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL CREATE INDEX IF NOT EXISTS view_ctd_casts_geom_idx ON view_ctd_casts USING GIST (geom)
ROWS Fetched: 0 [complete]
Changed: 0</code></pre>
</div>
<div class="sourceCode cell-code" id="cb22"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb22-1"><a href="#cb22-1" aria-hidden="true" tabindex="-1"></a><span class="fu">create_index</span>(con, <span class="st">"view_ctd_casts"</span>, <span class="st">"quarter"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>Warning in result_create(conn@ptr, statement, immediate): Closing open result
set, cancelling previous query</code></pre>
</div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL CREATE INDEX IF NOT EXISTS view_ctd_casts_quarter_idx ON view_ctd_casts(quarter)
ROWS Fetched: 0 [complete]
Changed: 0</code></pre>
</div>
<div class="sourceCode cell-code" id="cb25"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb25-1"><a href="#cb25-1" aria-hidden="true" tabindex="-1"></a><span class="fu">create_index</span>(con, <span class="st">"view_ctd_casts"</span>, <span class="st">"date"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>Warning in result_create(conn@ptr, statement, immediate): Closing open result
set, cancelling previous query</code></pre>
</div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL CREATE INDEX IF NOT EXISTS view_ctd_casts_date_idx ON view_ctd_casts(date)
ROWS Fetched: 0 [complete]
Changed: 0</code></pre>
</div>
<div class="sourceCode cell-code" id="cb28"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb28-1"><a href="#cb28-1" aria-hidden="true" tabindex="-1"></a><span class="fu">create_index</span>(con, <span class="st">"view_ctd_casts"</span>, <span class="st">"grid_pattern"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>Warning in result_create(conn@ptr, statement, immediate): Closing open result
set, cancelling previous query</code></pre>
</div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL CREATE INDEX IF NOT EXISTS view_ctd_casts_grid_pattern_idx ON view_ctd_casts(grid_pattern)
ROWS Fetched: 0 [complete]
Changed: 0</code></pre>
</div>
<div class="sourceCode cell-code" id="cb31"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb31-1"><a href="#cb31-1" aria-hidden="true" tabindex="-1"></a><span class="fu">create_index</span>(con, <span class="st">"view_ctd_casts"</span>, <span class="st">"grid_shore"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output cell-output-stderr">
<pre><code>Warning in result_create(conn@ptr, statement, immediate): Closing open result
set, cancelling previous query</code></pre>
</div>
<div class="cell-output cell-output-stdout">
<pre><code><PqResult>
SQL CREATE INDEX IF NOT EXISTS view_ctd_casts_grid_shore_idx ON view_ctd_casts(grid_shore)
ROWS Fetched: 0 [complete]
Changed: 0</code></pre>
</div>
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