Module tidb_query_expr::types[−][src]

Re-exports

pub use self::function::RpnFnCallExtra;

pub use self::function::RpnFnMeta;

expr
expr_builder
expr_eval
function	People implementing RPN functions with fixed argument type and count don’t necessarily need to understand how `Evaluator` and `RpnDef` work. There’s a procedural macro called `rpn_fn` defined in `tidb_query_codegen` to help you create RPN functions. For example:

RpnExpression	An expression in Reverse Polish notation, which is simply a list of RPN expression nodes.
RpnExpressionBuilder	Helper to build an `RpnExpression`.

RpnExpressionNode	A type for each node in the RPN expression list.
RpnStackNode	A type for each node in the RPN evaluation stack. It can be one of a scalar value node or a vector value node. The vector value node can be either an owned vector value or a reference.