ZetaSQL defines a language (grammar, types, data model, and semantics) as wellas a parser and analyzer. It is not itself a database or query engine. Insteadit is intended to be used by multiple engines wanting to provide consistentbehavior for all semantic analysis, name resolution, type checking, implicitcasting, etc. Specific query engines may not implement all features in theZetaSQL language and may give errors if specific features are not supported. Forexample, engine A may not support any updates and engine B may not supportanalytic functions.
This codebase is being open sourced in multiple phases:
Until all this code is released, we cannot provide any guarantees of APIstability and cannot accept contributions. We will also be releasing moredocumentation over time, particular related to developing engines with thisframework. Documentation on the languageitself is fairlycomplete.
ZetaSQL uses bazelfor building and (most) dependencyresolution. However, the following packages must be installed separately:
bison (>=3.1)
apt-get install bisonapt-get install flex
Then simply run:bazel build zetasql/...
TODO: Add docker build script.