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Expr evaluation silently returns None for nonexistent variables

bugSomething isn't workingSomething isn't working

Status: Open.

#213 In linkml/linkml-map;

· amc-corey-cox opened on Apr 30, 2026

Implicit cross-table join resolution for nested and regular class derivations

enhancementNew feature or requestNew feature or request

Status: Open.

#212 In linkml/linkml-map;

· amc-corey-cox opened on Apr 30, 2026

Silent null values when nested object populated_from references a different table than outer block (no warning, no fallback join)

bugSomething isn't workingSomething isn't working

enhancementNew feature or requestNew feature or request

Status: Open.

#211 In linkml/linkml-map;

· csiege opened on Apr 30, 2026

validate-spec should check class and slot references against source and target schemas

enhancementNew feature or requestNew feature or request

Status: Open.

#199 In linkml/linkml-map;

· amc-corey-cox opened on Apr 9, 2026

Support multi-source class derivations via sources, slot-level sources, and _source_class binding

enhancementNew feature or requestNew feature or request

Status: Open.

#193 In linkml/linkml-map;

· amc-corey-cox opened on Apr 7, 2026

Implement multi-row aggregation, group-by, and collection membership (in) operator

enhancementNew feature or requestNew feature or request

Status: Open.

#188 In linkml/linkml-map;

· amc-corey-cox opened on Apr 6, 2026

Add filter_rows expression to ClassDerivation for row-level filtering

enhancementNew feature or requestNew feature or request

Status: Open.

#187 In linkml/linkml-map;

· amc-corey-cox opened on Apr 6, 2026

Convert source_schema and target_schema slot values into complex objects

enhancementNew feature or requestNew feature or request

Status: Open.

#161 In linkml/linkml-map;

· matentzn opened on Mar 23, 2026

Consider consolidating sources into populated_from as a list

enhancementNew feature or requestNew feature or request

Status: Open.

#157 In linkml/linkml-map;

· amc-corey-cox opened on Mar 18, 2026

Flesh out DuckDBTransformer as a full execution backend

enhancementNew feature or requestNew feature or request

help wantedExtra attention is neededExtra attention is needed

Status: Open.

#151 In linkml/linkml-map;

· amc-corey-cox opened on Mar 10, 2026

Expand SQLCompiler to cover more of the TransformationSpecification

enhancementNew feature or requestNew feature or request

Status: Open.

#150 In linkml/linkml-map;

· amc-corey-cox opened on Mar 10, 2026

Evaluate whether Session class should be removed

enhancementNew feature or requestNew feature or request

questionFurther information is requestedFurther information is requested

Status: Open.

#125 In linkml/linkml-map;

· amc-corey-cox opened on Feb 24, 2026