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<dt style="clear: both; float: left; font-weight: bold; width: 8em">Author</dt>
<dd style="margin-left: 8.5em">Kentaro Hayashi <hayas****@clear*****></dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">Date</dt>
<dd style="margin-left: 8.5em">2017-04-29 14:19:24 +0900 (Sat, 29 Apr 2017)</dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">New Revision</dt>
<dd style="margin-left: 8.5em"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65">83394f2da7abd4f532d641d760546e4aa6230e65</a></dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">Message</dt>
<dd style="margin-left: 8.5em"><pre style="border: 1px solid #aaa; font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace; line-height: 1.2; padding: 0.5em; width: auto">blog ja: add more topic</pre></dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">Modified files</dt>
<dd style="margin-left: 8.5em">
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<li><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444e">ja/_posts/2017-04-29-groonga-7.0.2.md</a></li>
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<pre style="border: 0; font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre"> Modified: ja/_posts/2017-04-29-groonga-7.0.2.md (+51 -0)</span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eL112">112</a></span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eL115">115</a></span>
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<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR150">150</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR151">151</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR152">152</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR153">153</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR154">154</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR155">155</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR156">156</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR157">157</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR158">158</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR159">159</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR160">160</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR161">161</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR162">162</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR163">163</a></span>
<span class="diff-line-number-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR164">164</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR165">165</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR166">166</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga.org/commit/83394f2da7abd4f532d641d760546e4aa6230e65#diff-9192c280f7887ae8e2c1e5583ee0444eR167">167</a></span>
</pre>
</th>
<td class="diff-content" style="border: 1px solid #aaa">
<pre style="border: 0; font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -111,6 +111,57 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">serverやlocationディレティブごとに指定することもできます。</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> #### [in_records] 既存のテーブルを条件のパターンとして指定できるようになりました</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+今回のリリースでは、既存のテーブルを条件のパターンとして指定するための ``in_records`` をサポートしました。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+``in_records`` を使うと複数のクエリーを1つのクエリーへとまとめることができるかもしれません。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+これは、既存のテーブル内の各レコードがそれぞれ条件のパターンになる(複数の条件を指定できる)からです。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+例えば、ログから特定のパターンのレコードを抽出することを考えてみましょう。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ログには、ユーザーとそれに紐づくタグ、時刻が記録されているとします。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+サンプルとなるスキーマとデータは以下を使うことにします。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ table_create Users TABLE_HASH_KEY ShortText</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ table_create Tags TABLE_HASH_KEY ShortText</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ </span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ table_create Reports TABLE_NO_KEY</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ column_create Reports user COLUMN_SCALAR Users</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ column_create Reports tag COLUMN_SCALAR Tags</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ column_create Reports day COLUMN_SCALAR Time</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ </span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ table_create Logs TABLE_NO_KEY</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ column_create Logs user COLUMN_SCALAR Users</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ column_create Logs tag COLUMN_SCALAR Tags</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ column_create Logs time COLUMN_SCALAR Time</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ </span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ load --table Reports</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ [</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "alice", "tag": "tag1", "day": "2017-04-18 00:00:00"},</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "alice", "tag": "tag1", "day": "2017-04-19 00:00:00"},</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "david", "tag": "tag2", "day": "2017-04-20 00:00:00"},</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "david", "tag": "tag3", "day": "2017-04-21 00:00:00"}</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ ]</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ </span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ load --table Logs</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ [</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "alice", "tag": "tag1", "time": "2017-04-18 11:22:33"},</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "alice", "tag": "tag1", "time": "2017-04-20 11:22:33"},</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "bob", "tag": "tag1", "time": "2017-04-19 11:22:33"},</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "david", "tag": "tag1", "time": "2017-04-19 11:22:33"},</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ {"user": "david", "tag": "tag2", "time": "2017-04-20 11:22:33"}</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ ]</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ </span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+``Logs`` がログを記録しているテーブルです。特定のログに ``tag`` がつけられています。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+特定のユーザーとタグがつけられているある日のログのみを抽出したい、というのを実現しようとすると、クエリはどんどん複雑になっていきます。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+けれども今回追加された ``in_records`` を使うと条件のパターンを既存のテーブルへとまとめることができるのでクエリーを1つにすることができます。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ select Logs \</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ --filter 'in_records(Reports, \</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ user, "==", "user", \</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ tag, "==", "tag", \</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ time_classify_day(time), "==", "day")'</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+ </span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+上記の例では条件のパターンを ``Reports`` に保存された4つのレコードで表現しています。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+サンプルでは ``Reports`` テーブルしか使っていませんが、ここに指定しているテーブルを替えるだけで、条件のパターンのバリエーションを簡単に切り替えることもできます。</span>
<span class="diff-added" style="background-color: #eaffea; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ### さいごに</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> 7.0.1からの詳細な変更点は[7.0.2リリース 2017-04-29](/ja/docs/news.html#release-7-0-2)を確認してください。</span>
</pre>
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