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| <div class="innerhero__pre pb-3">Apache Ignite</div> |
| <h1 class="h1 innerhero__h1">Distributed ANSI SQL</h1> |
| <div class="innerhero__descr pt-2 h5"> |
| The same SQL you've been using for years but now with<br /> |
| in-memory speed and at unlimited scale |
| </div> |
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| <section class="dist"> |
| <div class="container"> |
| <div class="dist__block flexi"> |
| <div class="dist__info"> |
| <h2 class="dist__h2 h4">Apache Ignite as a SQL Database</h2> |
| <p class="dist__text">The native support for SQL let’s you work with Ignite as with a standard SQL database. You can use simply SQL if your applications need nothing else:</p> |
| <div class="dist__items flexi"> |
| <div class="dist__item"> |
| <h3 class="dist__item-title">DDL commands</h3> |
| <div class="dist__item-grey dist__item-grey1 flexi"> |
| <div class="dist__itemitem flexi"><span class="dist__item-span">CREATE</span><span class="dist__item-span">ALTER</span><span class="dist__item-span">DROP</span></div> |
| </div> |
| </div> |
| <div class="dist__item"> |
| <h3 class="dist__item-title">DML commands</h3> |
| <div class="dist__item-grey dist__item-grey2 flexi"> |
| <div class="dist__itemitem flexi"><span class="dist__item-span">SELECT</span><span class="dist__item-span">INSERT</span><span class="dist__item-span">UPDATE</span></div> |
| <div class="dist__itemitem dist__itemitem__end flexi"><span class="dist__item-span">MERGE</span><span class="dist__item-span">DELETE</span></div> |
| </div> |
| </div> |
| </div> |
| <h3 class="dist__h3">Apache Ignite is shipped with:</h3> |
| <div class="dist__parts flexi"> |
| <div class="dist__part flexi"> |
| <div class="compute2-points__item fz20"></div> |
| <div class="dist__part-text">JDBC driver</div> |
| </div> |
| <div class="dist__part flexi"> |
| <div class="compute2-points__item fz20"></div> |
| <div class="dist__part-text">ODBC driver</div> |
| </div> |
| <div class="dist__part flexi"> |
| <div class="compute2-points__item fz20"></div> |
| <div class="dist__part-text dist__part-textend flexi"> |
| Built-in SQL APIs |
| <div class="dist__part-grey">Available for Java, C#, C++, Python, and other programming languages</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <img class="dist__image" src="/img/features/sql/image.svg" alt="sql-hero" /> |
| </div> |
| </div> |
| </section> |
| <!-- /.dist--> |
| <section class="dist1"> |
| <div class="container"> |
| <h2 class="dist1__h2 h4">Join, Group and Aggregate Distributed Data Sets</h2> |
| <div class="dist1__subtext">Whether you use a two or thousand-node cluster, you can always do the following:</div> |
| <div class="dist1__parts flexi"> |
| <div class="dist1__part">group data</div> |
| <div class="dist1__part">join data</div> |
| <div class="dist1__part">order data</div> |
| <div class="dist1__part dist1__partend">aggregate data</div> |
| </div> |
| <div class="dist1__title">What is a distributed join?</div> |
| <p class="dist1__text h4">A distributed join is a SQL statement with a join clause that combines two or more tables that have their data distributed across many cluster nodes.</p> |
| <h3 class="dist1__h3 h4">Types of joins in Ignite</h3> |
| <div class="dist1__blocks flexi"> |
| <div class="dist1__block"> |
| <h4 class="dist1__h4">Co-located joins</h4> |
| <p class="dist1__texts">These are the most performant types of joins that avoid data shuffling between nodes and minimize network usage.</p> |
| <p class="dist1__texts pt-1"> |
| This type of join is used if you join <a class="dist1__link" href="https://ignite.apache.org/docs/latest/data-modeling/affinity-collocation" target="_blank">partitioned and replicated tables</a> or partitioned tables that are |
| co-located with each other. |
| </p> |
| </div> |
| <div class="dist1__block"> |
| <h4 class="dist1__h4">Non-colocated joins</h4> |
| <p class="dist1__texts">A less performant type of join that joins data of non‑colocated tables. Ignite needs to shuffle data over the network to produce a correct result set.</p> |
| </div> |
| <div class="dist1__block"> |
| <h4 class="dist1__h4">Hash joins</h4> |
| <p class="dist1__texts">Ignite supports classic hash join algorithm that is more efficient than nested loop joins for many scenarios.</p> |
| </div> |
| </div> |
| </div> |
| </section> |
| <!-- /.dist1--> |
| <section class="dist2"> |
| <div class="container"> |
| <h2 class="dist2__h2 h4">Ignite SQL Engine and Multi-Tier Storage</h2> |
| <p class="dist2__p">Depending on your storage configuration, Ignite SQL engine can query both in-memory and disk-only records</p> |
| <div class="dist2__blocks flexi"> |
| <div class="dist2__block"> |
| <h3 class="dist2__h3">In-Memory Mode</h3> |
| <p class="dist2__text dist2__text1">Ignite caches data only in memory</p> |
| <details class="dist2__details"> |
| <summary class="dist2__active"><img src="/img/features/sql/plus.svg" alt="sql-hero" /></summary> |
| <div class="dist2__subtext"><p>In this mode, Ignite SQL carries out tasks as quickly as possible, as long as all the data is served from memory, with no usage of the disk tier at all.</p></div> |
| </details> |
| </div> |
| <div class="dist2__block"> |
| <h3 class="dist2__h3">In-Memory <br />+ Native Persistence Mode</h3> |
| <p class="dist2__text"> |
| Ignite scales beyond available<br /> |
| memory capacity |
| </p> |
| <details class="dist2__details"> |
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| <p class="pt-1">Ignite SQL engine does not require the caching of entire data set in memory to operate correctly.</p> |
| <p class="pt-1">If the engine finds that a record is not cached, then it will read the record from disk. Your application only executes SQL queries, and Ignite gets the records from both memory and disk automatically.</p> |
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| <p>In this mode, the Ignite SQL engine requires caching of all the data needed for distributed queries in memory, since the engine does not currently support federated queries.</p> |
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