Module ast_helpers 

Shared AST manipulation helpers for DML planners.

Functions

flatten_and_expr

Flatten a right-leaning AND expression tree into a list of conjuncts.

qualified_ident_pair

Return (table, column) for a table.col compound identifier, or None.

rebuild_and_expr

Reassemble conjuncts into a right-leaning AND tree. Panics if empty.

strip_and_convert_filters

Strip qualifier. from all compound identifiers in expr, then convert the result to Vec<Filter> via convert_where_to_filters.

strip_table_qualifier

Walk an expression and replace every table.col compound identifier where table == qualifier with a bare col identifier. Lets target-side predicates like t.score > 15 be evaluated against documents that store fields without a table qualifier.