| ⇢ | A | Backend added | |
| ⇢ | A | LimitStatementStep added | |
| ⇢ | A | SortStatementStep added | |
| ⇢ | A | DeleteStatementStep added | |
| ⇢ | A | InsertStatementStep added | |
| ⇢ | A | IndexLookupStatementStep added | |
| ⇢ | A | FilterStatementStep added |
| ⇢ | B | Backend.prepare() added | |
| ⇢ | A | Backend.prepare_update() added | |
| ⇢ | A | Backend.prepare_query_steps() added | |
| ⇢ | A | IndexLookupStatementStep.expand_selected_fields() added | |
| ⇢ | A | IndexLookupStatementStep.initialize() added | |
| ⇢ | A | Backend.find_update_plans() added | |
| ⇢ | A | Backend.add_insert_step() added | |
| ⇢ | A | IndexLookupStatementStep.result_conditions() added | |
| ⇢ | A | FilterStatementStep.include_row? added | |
| ⇢ | A | FilterStatementStep.process() added | |
| ⋮ | view more | ||
| A | ↛ | BackendBase.find_query_plan() removed | |
| A | ↛ | BackendBase.by_id_graph() removed | |