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Add join fan-out prevention test suite #37

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nicosuave merged 5 commits into from
Apr 12, 2026
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Add join fan-out prevention test suite #37

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825b0b4
Add comprehensive join fan-out prevention tests
nicosuave Apr 11, 2026
db5f31d
Fix BOOL_AND/BOOL_OR test to be fan-out sensitive and resolve measure…
nicosuave Apr 11, 2026
20b5fe3
Make MIN/MAX, COUNT DISTINCT, and MODE tests fan-out sensitive
nicosuave Apr 11, 2026
7eec0f1
Make grouped AVG and ratio tests fan-out sensitive
nicosuave Apr 11, 2026
a2dd193
Make grouped AVG and ratio tests fan-out sensitive
nicosuave Apr 11, 2026
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3 changes: 2 additions & 1 deletion docs/measures-sql-paper-parity.md
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Expand Up @@ -32,7 +32,8 @@ This matrix tracks parity for the core language semantics described in sections
| Listing 12 (queries 1-4) | correlated subquery, self-join, window, and measure forms return same rows | Covered | `test/sql/measures.test:1614`, `test/sql/measures.test:1624`, `test/sql/measures.test:1637`, `test/sql/measures.test:1652` |
| §5.1 claim | `AT` can access rows excluded by outer `WHERE` (more expressive than `OVER`) | Covered | `test/sql/measures.test:962` |
| §5.4 composability | derived measures referencing measures in same `SELECT` | Covered | `test/sql/measures.test:772`, `test/sql/measures.test:1499` |
| §5.3 wide-table safety direction | joins with measures avoid double counting in tested cases | Partial | `test/sql/measures.test:889`, `test/sql/measures.test:1473` |
| §3.6/§5.3 join fan-out prevention | measures immune to join fan-out across all aggregate types, join cardinalities (1:N, M:N, LEFT), and query shapes (grouped, filtered) | Covered | `test/sql/measures.test:949-1355` (20 tests) |
| §5.3 wide-table safety direction | joins with measures avoid double counting in tested cases | Covered | `test/sql/measures.test:889`, `test/sql/measures.test:1473`, `test/sql/measures.test:982` |
| §5.5 security model | measure views preserve SQL security boundaries | Gap | no privilege-based test in suite |
| §3.4 call-site breadth | explicit use in `HAVING` parity path | Covered | `test/sql/measures.test:1548` |

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