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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
+SAVEPOINT sp895;
+PRAGMA reverse_unordered_selects;
+PRAGMA reverse_unordered_selects = YES;
+PRAGMA cache_spill;
+CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT, c INT, d INT);
+INSERT INTO t1 VALUES (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
+.changes on
+PRAGMA page_size='false';
+CREATE TABLE /* PRAGMA max_page_count = 5000000; */ t1(a INT PRIMARY KEY, b BLOB, c INT) WITHOUT ROWID;
+WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE NOT NOT (NOT x<100) INSERT INTO t1(a,b,c) SELECT x*2, zeroblob(100), x FROM c) ;
+UPDATE t1 SET b=zeroblob(1000) WHERE a=198;
+CREATE TABLE t2(x INTEGER PRIMARY KEY, y INT);
+CREATE TABLE T (
+  A VARCHAR(20),
+  B VARCHAR(10),
+  C INTEGER,
+  PRIMARY KEY (A, B)
+);
+INSERT INTO T VALUES ('a', 'p', -2147483648);
+INSERT INTO T VALUES ('b', 'q', 100);
+INSERT INTO T VALUES ('b', 'r', 200);
+INSERT INTO T VALUES ('c', 's', 300);
+INSERT INTO T VALUES ('d', 't', 2147483647);
+INSERT INTO T VALUES ('b', 't', 50);
+SELECT A, COUNT(*) AS D, SUM(C) AS E FROM T GROUP BY A HAVING COUNT(*) > 1;
+INSERT INTO t2(y) VALUES(198),(187),(100);
+SELECT y, c FROM t2 LEFT JOIN t1 ON y=a ORDER BY x;
+SELECT y, c FROM t1 RIGHT JOIN t2 ON y=a ORDER BY x;
+SELECT * FROM t1 NATURAL JOIN t1;
+DROP INDEX IF EXISTS t2;
+SELECT COUNT(*) FROM t2;
+CREATE UNIQUE  INDEX IF NOT EXISTS idx_t2_5905 ON t2((y + 1));
+CREATE UNIQUE  INDEX IF NOT EXISTS idx_t2_7184 ON t2((x + 1)) WHERE x > 0;
+VACUUM;
+CREATE TABLE T (
+  a TEXT,
+  b REAL
+);
+INSERT INTO T VALUES ('a',100.0), ('b',-200.5), ('c',9e999);
+SELECT a,b,
+LEAD(b,1) OVER (ORDER BY b DESC) AS c,
+NTILE(2) OVER (ORDER BY b DESC) AS d FROM T;
+ANALYZE T;
+RELEASE sp895;
+ALTER TABLE T RENAME TO T_r129;
+SELECT STRING_AGG(B) FROM T;
+WITH cte AS (SELECT B, COUNT(*) AS cnt FROM T GROUP BY B) SELECT * FROM cte;
+INSERT INTO t2 SELECT * FROM t2;
+SELECT * FROM T NATURAL JOIN t2;
+```
+
+## Actual output
+
+```sql
+0
+483
+CREATE TABLE "t2"("b","c","_ROWID_",PRIMARY KEY("b","c","_ROWID_"))WITHOUT ROWID;
+WARNING: writing to an imposter table will corrupt the "t1bc" index!
+von|20|2
+Wernher|10|1
+Braun|30|3
+Braun|30
+Wernher|10
+von|20
+```
+
+## Expectation
+
+```sql
+0
+483
+CREATE TABLE "t2"("b","c","_ROWID_",PRIMARY KEY("b","c","_ROWID_"))WITHOUT ROWID;
+von|20|2
+Wernher|10|1
+Braun|30|3
+Braun|30
+Wernher|10
+von|20
+```
+
+## Flag
+
+```
+
+```
+