Why we need SQL for data stream processing and real-time streaming analytics

There was a lot of interest and discussion at the recent Strata in San Jose around real-time analytics. Seems to be the hot topic, and many have been blogging about it since, including why SQL is a good idea for real-time streaming analytics. I would certainly agree with that sentiment, on the need for SQL for streaming analytics. There are many reasons as to why, some technical such as as the power of the language, and some more business-oriented such as the suitability of SQL platforms for reliable enterprise deployments, better performance and significant lower overall cost when compared with open source and proprietary SQL-like platforms.