Module simplify_predicates 

Simplifies predicates by reducing redundant or overlapping conditions.

This module provides functionality to optimize logical predicates used in query planning by eliminating redundant conditions, thus reducing the number of predicates to evaluate. Unlike the simplifier in simplify_expressions/simplify_exprs.rs, which focuses on general expression simplification (e.g., constant folding and algebraic simplifications), this module specifically targets predicate optimization by handling containment relationships. For example, it can simplify x > 5 AND x > 6 to just x > 6, as the latter condition encompasses the former, resulting in fewer checks during query execution.

Functions

extract_column_from_expr 🔒

Extracts a column reference from an expression, if present.

find_most_restrictive_predicate 🔒

Finds the most restrictive predicate from a list based on literal values.

simplify_column_predicates 🔒

Simplifies predicates related to a single column.

simplify_predicates

Simplifies a list of predicates by removing redundancies.