Document History
The following table describes important changes to the documentation since the last release of the Amazon Kinesis Data Analytics SQL Reference.
- API version: 2015-08-14 
- Latest documentation update: March 19, 2018 
| Change | Description | Date | 
|---|---|---|
| New HOTSPOTSfunction | Locate and return information about relatively dense regions in your data. For more information, see HOTSPOTS. | March 19, 2018 | 
| Stream-to-stream JOIN examples | Examples for JOIN clause queries. For more information, see JOIN clause. | February 28, 2018 | 
| New TSDIFFfunction | Obtain the difference between two time stamps. For more information, see TSDIFF. | December 11, 2017 | 
| New RANDOM_CUT_FOREST_WITH_EXPLANATIONfunction | Get an explanation of what fields contribute to an anomaly score in a data stream. For more information, see RANDOM_CUT_FOREST_WITH_EXPLANATION. | November 2, 2017 | 
| New REGEX_LOG_PARSEfunction | Get regex matches from a source string in columnar format. For more information, see REGEX_LOG_PARSE. | August 21, 2017 | 
| Table of contents reorganization | Topic categories are now more intuitive. | August 18, 2017 | 
| New SQL functions | Addition of STEP, LAG, TO_TIMESTAMP, UNIX_TIMESTAMP, REGEX_REPLACE, and addition of regex support to SUBSTRING | August 3, 2017 | 
| New guide | This is the first release of the Amazon Kinesis Data Analytics SQL Reference guide. | August 11, 2016 |