Francois Saint-Jacques created ARROW-7821:
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Summary: [Gandiva] Add support for literal variables
Key: ARROW-7821
URL: https://issues.apache.org/jira/browse/ARROW-7821
Project: Apache Arrow
Issue Type: Sub-task
Components: C++ - Gandiva
Reporter: Francois Saint-Jacques
Fix For: 1.0.0
Gandiva supports static literal constants, but doesn't support runtime literal
constants (or simply, variables). This means that queries like `x > 1` and `x >
2` are compiled in separate operators. The goal would be to provide something
like prepared statement for very simple expression, e.g. ` x > ?`. This way we
can pre-generate operators for most basic comparison filters on every type.
I'm thinking that the variables should be stashed in the context pointer as
opposed to a new function parameter. This would minimise the implementation
impact.
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