Diese Seite ist in Ihrer lokalen Sprache noch nicht verfügbar. Wir arbeiten daran, weitere Sprachversionen hinzuzufügen. Vielen Dank für Ihre Unterstützung.

On this page

Show all

Application Development Overview

Updated on 2022-09-14 GMT+08:00

Continuous Query Language (CQL) is a query language used for data streams. Compared with standard SQL, CQL introduces the concept of window. Data is stored in memory so that in-memory computing can be quickly implemented. CQL query results are computing results at a specific moment of data streams.

CQL has the following features:

  • Simple usage: Similar to standard SQL syntax, CQL syntax supports SQL-based quick development.
  • Rich functions: Except various standard basic SQL expressions, CQL provides window, pre-window filtering, post-window filtering, and concurrency setting functions for stream processing scenarios to meet requirements in multiple real-time service processing scenarios.
  • Easy to scale: CQL provides an extension interface to supporting increasingly complex service scenarios. Users can customize the input, output, serialization, and deserialization to meet specific service requirements.
  • Easy to debug: CQL provides detailed explanation of error codes, facilitating users to rectify faults.
Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback