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Update documentation

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Allen Downey
2020-11-13 15:49:49 -05:00
parent 5eeb217950
commit 6f3e4f3ecf
8 changed files with 66 additions and 22 deletions
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05_join.html
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@@ -804,7 +804,7 @@ dtype: int64
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<p>Since we’ve done everything here before, we’ll do these steps as an exercise.</p>
<p><strong>Exercise:</strong> Select <code class="docutils literal notranslate"><span class="pre">source_id</span></code> and <code class="docutils literal notranslate"><span class="pre">original_ext_source_id</span></code> from <code class="docutils literal notranslate"><span class="pre">results1</span></code> and write the resulting table as a file named <code class="docutils literal notranslate"><span class="pre">external.xml</span></code>.</p>
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<li><p><code class="docutils literal notranslate"><span class="pre">i_mean_psf_mag</span></code> from <code class="docutils literal notranslate"><span class="pre">gaiadr2.panstarrs1_original_valid</span></code></p></li>
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<p>Hint: When you select a column from a join, you have to specify which table the column is in.</p>
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