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2026-06-24 13:47:14 +02:00
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+## Summary
+<!--Explain briefly what goes wrong and explain why you believe this is a bug and not the intended behavior of SQLite (if it is not a crash).-->**No review yet**
+
+## Minimized query
+
+```sql
+PRAGMA writable_schema = YES;
+PRAGMA short_column_names = OFF;
+PRAGMA vdbe_trace = YES;
+ATTACH DATABASE '' || (':memory:') AS aux22;
+BEGIN DEFERRED;
+CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT, c INT, d INT);
+InsErt INTO t1 VALUES (json_valid(ln(-json_set(sinh(x'01'), '$.key', (log(-(-(9223372036854775809))) * 1))), 1), 'Wernher', 10, 100);
+INSERT INTO t1 VALUES (2, 'von', 20, 200);
+INSERT INTO t1 VALUES (3, 'Braun', 30, 300);
+
+CREATE INDEX t1bc ON t1(b, c);
+
+PRAGMA writable_schema = ON;
+
+.imposter t1bc t2
+
+SELECT * FROM t2;
+
+SELECT b, c FROM t1 ORDER BY b, c;
+
+.quit
+DROP TABLE IF EXISTS t1;
+DROP TABLE IF EXISTS t2;
+CREATE TABLE t1(x);
+INSERT INTO t1 VALUES(-2147483649);
+CREATE TABLE t2(y,z);
+INSERT INTO t2 VALUES(2,3);
+CREATE INDEX t2y ON t2(y);
+SELECT * FROM t1,(SELECT * FROM t2 WHERE NOT NOT (NOT NOT (y=2)) ORDER BY y,z);
+
+SELECT GROUP_CONCAT(x, '.') OVER (PARTITION BY x ORDER BY x ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) FROM t1;
+INSERT OR ABORT INTO t2 VALUES (0, 'x');
+END;
+ANALYZE;
+REINDEX;
+SELECT * FROM t2;
+CREATE UNIQUE  INDEX IF NOT EXISTS idx_t2_6543 ON t2(y COLLATE NOCASE) WHERE y > 0;
+SELECT * FROM t2 AS a LEFT OUTER JOIN t1 AS b ON a.rowid = b.rowid;
+DROP INDEX IF EXISTS t2;
+DETACH DATABASE aux22;
+INSERT INTO t2 VALUES (NULL, NULL);
+CREATE TRIGGER IF NOT EXISTS trg_t1_9456 AFTER UPDATE ON t1 FOR EACH ROW BEGIN SELECT RAISE(FAIL, 'no'); END;
+DROP TRIGGER IF EXISTS t2;
+CREATE TABLE T1 (
+  A VARCHAR(10) PRIMARY KEY,
+  B VARCHAR(15) UNIQUE,
+  C BIGINT
+);
+CREATE TABLE T2 (
+  X VARCHAR(20) PRIMARY KEY,
+  A VARCHAR(10),
+  FOREIGN KEY (A) REFERENCES T1(A)
+);
+INSERT INTO T1 VALUES ('a', 'p', 9999999999999);
+INSERT INTO T1 VALUES ('b', 'q', -9999999999999);
+INSERT INTO T2 VALUES ('m', 'a');
+INSERT INTO T2 VALUES ('n', 'b');
+SELECT T2.X, T1.C FROM T2 INNER JOIN T1 ON T2.A = T1.A WHERE T1.C > -1000000000000;
+
+SELECT COUNT(*) FROM T2;
+ALTER TABLE t1 ADD COLUMN extra_7517 FLOA DEFAULT (abs(random()) % 1000);
+DROP TABLE IF EXISTS T1;
+
+SELECT COUNT(*) FROM T1;
+VACUUM;
+ALTER TABLE T1 RENAME TO T1_r4172;
+INSERT INTO T1 VALUES (NULL, NULL, NULL) ON CONFLICT(A) DO UPDATE SET A = excluded.A, B = excluded.B, C = excluded.C;
+SELECT GROUP_CONCAT(y, '|') FROM t2;
+SELECT COUNT(*) FILTER (WHERE X IS NOT NULL), SUM(rowid) FILTER (WHERE X > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(X) FILTER (WHERE X > 0 AND X < 100), COUNT(*) FILTER (WHERE typeof(X) = "text") FROM T2;
+ALTER TABLE T1 ADD COLUMN extra_7361 BOOLEAN DEFAULT (random());
+ALTER TABLE t1 RENAME TO t1_r8174;
+DROP TABLE IF EXISTS T2;
+PRAGMA reverse_unordered_selects;
+SELECT COUNT(*) FILTER (WHERE x IS NOT NULL), SUM(rowid) FILTER (WHERE x > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(x) FILTER (WHERE x > 0 AND x < 100), COUNT(*) FILTER (WHERE typeof(x) = "text") FROM t1;
+SELECT LAG(A, 1, NULL) OVER (PARTITION BY A ORDER BY A) FROM T2;
+WITH RECURSIVE pair(a,b) AS (VALUES(0,1) UNION ALL SELECT b, a+b FROM pair WHERE b<100) SELECT * FROM pair;
+CREATE TRIGGER IF NOT EXISTS trg_T2_9819 AFTER DELETE ON T2 BEGIN INSERT INTO T2(A) VALUES (NULL); END;
+SELECT * FROM T1 AS a LEFT OUTER JOIN T1 AS b ON a.rowid = b.rowid;
+DELETE FROM t1 WHERE x > (SELECT AVG(x) FROM t1);
+INSERT INTO T2 VALUES (NULL, 'x') ON CONFLICT(X) DO UPDATE SET X = excluded.X, A = excluded.A;
+PRAGMA checkpoint_fullsync = NO;
+```
+
+## Actual output
+
+```sql
+CREATE TABLE "t2"("b","c","_ROWID_",PRIMARY KEY("b","c","_ROWID_"))WITHOUT ROWID;
+WARNING: writing to an imposter table will corrupt the "t1bc" index!
+Braun|30|3
+von|20|2
+Braun|30
+von|20
+```
+
+## Expectation
+
+```sql
+
+```
+
+## Flag
+
+```
+
+```
+