What is the fine-grained topic of the following text: Christos will show how Apache Ignite handles auto-loading of SQL schema and data, SQL indexes, compound indexes support, and various forms of SQL queries including distributed SQL joins, joins across caches, predicate-based queries, queries over sliding windows for streaming data, and more. Only return the topic.
Apache Ignite's handling of SQL schema, data auto-loading and different forms of SQL queries