Aaron Raddon

Build out the common function library. - `CAST` function http://www.cheatography.com/davechild/cheat-sheets/mysql/ - http://www.stoic.com/pages/formula - http://www.postgresql.org/docs/9.4/static/functions.html - http://dev.mysql.com/doc/refman/5.0/en/func-op-summary-ref.html - http://prestodb.io/docs/current/functions.html - https://docs.microsoft.com/en-us/sql/t-sql/functions/functions

ES Generator

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refs #168

Some expressions that can't be lexed `5.5 == [true,"hello", "5.5"]` ``` FILTER OR ( "now+1h" > last_event x BETWEEN a AND b exists(not_a_field), last_event IN ("a","b") ) ```

Currently in Elasticsearch Generator #158 the Right side of a left-right binary expressio must be a value, not an identity. We can epress right side identities using es5 scripting. *...

Better Error Messaging on Parse

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Error messages on parse are not very good. * [ ] currently missing functions don't return an error as they should bc the validate allows missing. * [ ] better...

Originally, i made a big mistake on left.right namespacing identities, and allowed a bad format. Need to find a way to back this out. utility to find/remove? particularly in generators/elasticsearch...

In implementation of the new Node -> Expr -> Json we should add round-tripping to our tests. Additionally, we are having problems with left.right identities. * [ ] Ensure we...

There is too much overlap. - [ ] address how to handle '*' - [ ] null node? - [ ] all conversions

We need a way of having a source-backed-source. So that a rest-api or some high-latency, low query/index feature set can be fronted by a richer query engine.

Currently the function-registry is assumed to be global scope. This is flawed, each `table` in a schema would have its own function registry, so that a elasticsearch backed table would...