With Azure Cosmos DB, while you write a sustained volume of data, these data will be synchronously indexed to serve consistent SQL queries using a write-optimized, latch-free database engine designed for solid-state drives (SSDs) and low latency access.
Q: What kinds of queries does Amazon Athena support? Amazon Athena supports ANSI SQL queries. Amazon Athena uses Presto, an open source, in-memory, distributed SQL engine, and can handle complex analysis, including large joins, window functions, and arrays.
Amazon Athena verwendet Presto mit ANSI SQL-Unterstützung und funktioniert mit einer Reihe von Standarddatenformaten wie CSV, JSON, ORC, Avro und Parquet. Athena eignet sich ideal für schnelle Ad-hoc-Abfragen, kann aber auch komplexe Analysen einschließlich große Verknüpfungen, Fensterfunktionen und Arrays verarbeiten.
The common search engine allows simultaneous queries across multiple, distributed databases.
Unsere interaktive SQL-Engine, die auf Apache Impala betrieben wird, bietet hochskalierbare Abfragen mit hoher Kongruenz.
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