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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
+.schema @@@@@@@@@@@@@@@@
+PRAGMA vdbe_debug = YES;
+ATTACH DATABASE ':memory:' AS aux63;
+ATTACH DATABASE ':memory:' AS aux96;
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1(w INT, x INT);
+INSERT INTO t1(w,x) VALUES(format(NULL, 144337552170438577),10),(2,20),(3,30), (2,21),(3,31), (3,32);
+CREATE INDEX t1wx ON t1(w,x);
+
+DROP TABLE IF EXISTS t2;
+CREATE TABLE t2(w INT, y VARCHAR(8));
+INSERT INTO t2(w,y) VALUES(1,'one'),(2,'two'),(3,'three'),(4,'four');
+CREATE INDEX t2wy ON t2(w,y);
+
+WITH _m AS MATERIALIZED (SELECT * FROM t2) SELECT cnt, xyz, (SELECT y FROM _m WHERE w=cnt), '|' FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2) ORDER BY cnt, xyz;
+SELECT cnt, xyz, lower((SELECT y FROM t2 WHERE w=cnt)), '|' FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2) ORDER BY cnt, xyz;
+SELECT cnt, xyz, CASE WHEN (SELECT y FROM t2 WHERE w=cnt)=='two' THEN 'aaa' ELSE 'bbb' END, '|' FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2) ORDER BY +cnt;
+
+DETACH DATABASE aux96;
+
+SELECT COUNT(*) FROM t1;
+ALTER TABLE t2 ADD COLUMN extra_1857 MEDIUMINT DEFAULT NULL;
+UPDATE t1 SET w = CURRENT_TIMESTAMP WHERE rowid = 1;
+DETACH DATABASE aux63;
+DELETE FROM t1 WHERE x > (SELECT AVG(x) FROM t1) RETURNING *;
+SELECT STRING_AGG(x, '|') FROM t1;
+REINDEX;
+INSERT INTO t1 VALUES (NULL, NULL);
+DROP TRIGGER IF EXISTS t2;
+DROP TRIGGER IF EXISTS t1;
+SELECT * FROM t2 AS a LEFT OUTER JOIN t1 AS b ON a.rowid = b.rowid;
+ANALYZE;
+SELECT * FROM t2 WHERE EXISTS (SELECT 1 FROM t2 WHERE EXISTS (SELECT 1 FROM t2));
+WITH cte AS (SELECT * FROM t1 WHERE x = (SELECT MAX(x) FROM t1)) SELECT * FROM cte;
+INSERT INTO t1 DEFAULT VALUES;
+CREATE  INDEX IF NOT EXISTS idx_t2_9622 ON t2(y) WHERE y IS NOT NULL;
+CREATE TRIGGER IF NOT EXISTS trg_t2_942 AFTER DELETE ON t2 BEGIN SELECT RAISE(IGNORE); END;
+```
+
+## Actual output
+
+```sql
+1||one||
+2|2|two||
+3|3|three||
+1||one||
+2|2|two||
+3|3|three||
+1||bbb||
+2|2|aaa||
+3|3|bbb||
+6
+3|30
+3|31
+3|32
+1|one||2026-05-15 11:38:38|10
+2|two||2|20
+3|three|||
+4|four||2|21
+1|one|
+2|two|
+3|three|
+4|four|
+2|21
+```
+
+## Expectation
+
+```sql
+
+```
+
+## Flag
+
+```
+
+```
+