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Julian Hyde commented on CALCITE-3271: -------------------------------------- "TVF" is jargon, and non-standard jargon at that. (I had to look it up, and I co-authored the paper.) Please expand/clarify. > TVF windowing and EMIT syntax support in Calcite > ------------------------------------------------ > > Key: CALCITE-3271 > URL: https://issues.apache.org/jira/browse/CALCITE-3271 > Project: Calcite > Issue Type: Improvement > Components: core > Affects Versions: 1.20.0 > Reporter: Danny Chan > Assignee: Danny Chan > Priority: Major > > Copied from the mailing list: > Calcite has not implemented the syntax in that paper. I would support an > effort to add it (unsurprising, since I am a co-author of that paper). > EMIT STREAM is equivalent to the current SELECT STREAM syntax. > There is no equivalent in current Calcite of the EMIT AFTER WATERMARK, or > EMIT STREAM AFTER DELAY. > HOP, TUMBLE and SESSION are supported in Calciteās SQL parser, but following > the paper would be replaced with a table function call. We could need to add > HOP, TUMBLE and SESSION table functions. We would also need to make the > system aware of how watermarks flow through these table functions (an area > that the paper does not go into). > Julian -- This message was sent by Atlassian Jira (v8.3.2#803003)