Add Datalog evaluator and type resolution packages#4360
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kyleconroy wants to merge 1 commit intomainfrom
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Add Datalog evaluator and type resolution packages#4360kyleconroy wants to merge 1 commit intomainfrom
kyleconroy wants to merge 1 commit intomainfrom
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Introduce two new self-contained packages: - internal/datalog: A purpose-built Datalog evaluator implementing semi-naïve bottom-up evaluation with stratified negation. Supports symbol interning, rule building, nested-loop joins, and fixpoint computation (~720 lines). - internal/datalog/typeres: SQL type resolution expressed as Datalog rules over relations (base_type, implicit_cast, operator, function_sig, expr_type, etc.). Derives resolved_type, castable, and common_type. Includes LoadPostgreSQLTypes() with ~25 common PG types and their cast paths (~680 lines). https://claude.ai/code/session_01Tp4qzqnkRGVxJnJa9ARtDi
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Introduce two new self-contained packages:
internal/datalog: A purpose-built Datalog evaluator implementing
semi-naïve bottom-up evaluation with stratified negation. Supports
symbol interning, rule building, nested-loop joins, and fixpoint
computation (~720 lines).
internal/datalog/typeres: SQL type resolution expressed as Datalog
rules over relations (base_type, implicit_cast, operator, function_sig,
expr_type, etc.). Derives resolved_type, castable, and common_type.
Includes LoadPostgreSQLTypes() with ~25 common PG types and their
cast paths (~680 lines).
https://claude.ai/code/session_01Tp4qzqnkRGVxJnJa9ARtDi