GQL 1.0 profile

pgGraph 1.0 implements the documented subset below. It does not claim full ISO GQL, full openCypher, or SQL/PGQ conformance. Every supported GQL write updates its mapped PostgreSQL tables first.

Capability ID	Profile	Positive executable evidence
`match`	read	`gql_single_directed_match_matches_traverse_fixture`
`optional_match_single_relationship`	read	`gql_optional_match_matches_left_outer_sql`
`where_node_properties`	read	`gql_optional_match_filters_orders_and_paginates_null_rows`
`with`	read	`gql_with_projection_scope_aliases_and_shadows`
`return_projection`	read	`gql_defaults_to_hydrated_nodes_and_projects_ids_explicitly`
`distinct`	read	`gql_distinct_matches_sql_distinct_counts`
`order_limit_offset`	read	`gql_optional_match_filters_orders_and_paginates_null_rows`
`aggregates`	read	`gql_aggregates_match_sql_grouping_and_numeric_results`
`bounded_paths_and_path_functions`	read	`gql_path_values_and_functions_have_stable_shape`
`mapped_single_node_create`	write	`gql_create_node_inserts_mapped_row_and_records_delta`
`mapped_single_relationship_create`	write	`gql_create_relationship_inserts_edge_row_and_records_delta`
`mapped_single_node_set_remove`	write	`gql_set_property_updates_source_row_and_filter_index`, `gql_remove_typed_property_sets_source_column_null_idempotently`
`mapped_single_relationship_delete`	write	`gql_delete_edge_removes_source_row_and_tombstones_neighbors`
`mapped_single_node_detach_delete`	write	`gql_detach_delete_removes_incident_edges_before_node`
`mapped_single_node_merge`	write	`gql_merge_node_inserts_then_updates_mapped_row`

Each listed capability is covered by parser, planning, execution, error, access-control, resource, and documentation tests. Write capabilities also include transaction and rollback tests that verify PostgreSQL tables are updated first. The release checker verifies every referenced implementation marker and test.

release/v1-gql-unsupported.json lists unsupported and compatibility syntax. These examples are rejected before execution with the documented SQLSTATE and guidance; pgGraph does not interpret them as supported syntax.