## 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 checkpoint_fullsync = FALSE;
BEGIN EXCLUSIVE TRANSACTION;
ATTACH DATABASE ':memory:' AS aux85;
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
UPDATE t1 SET d = 'x' WHERE d IS NOT NULL;
CREATE TRIGGER IF NOT EXISTS trg_t1_5828 AFTER UPDATE OF d ON t1 BEGIN SELECT RAISE(FAIL, 'no'); END;
SELECT TOTAL(a) FROM t1;
PRAGMA mmap_size = 50000000;
DETACH DATABASE aux85;
SELECT * FROM t1 WHERE c > (SELECT AVG(c) FROM t1);
COMMIT TRANSACTION;
ALTER TABLE t1 RENAME TO t1_r4016;
INSERT INTO t1 DEFAULT VALUES;
PRAGMA checkpoint_fullsync = FALSE;
BEGIN EXCLUSIVE TRANSACTION;
ATTACH DATABASE ':memory:' AS aux85;
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
UPDATE t1 SET d = 'x' WHERE d IS NOT NULL;
CREATE TRIGGER IF NOT EXISTS trg_t1_5828 AFTER UPDATE OF d ON t1 BEGIN SELECT RAISE(FAIL, 'no'); END;
SELECT TOTAL(a) FROM t1;
PRAGMA mmap_size = 50000000;
DETACH DATABASE aux85;
SELECT * FROM t1 WHERE c > (SELECT AVG(c) FROM t1);
COMMIT TRANSACTION;
ALTER TABLE t1 RENAME TO t1_r4016;
INSERT INTO t1 DEFAULT VALUES;
PRAGMA checkpoint_fullsync = FALSE;
BEGIN EXCLUSIVE TRANSACTION;
ATTACH DATABASE ':memory:' AS aux85;
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
UPDATE t1 SET d = 'x' WHERE d IS NOT NULL;
CREATE TRIGGER IF NOT EXISTS trg_t1_5828 AFTER UPDATE OF d ON t1 BEGIN SELECT RAISE(FAIL, 'no'); END;
SELECT TOTAL(a) FROM t1;
PRAGMA mmap_size = 50000000;
DETACH DATABASE aux85;
SELECT * FROM t1 WHERE c > (SELECT AVG(c) FROM t1);
COMMIT TRANSACTION;
ALTER TABLE t1 RENAME TO t1_r4016;
INSERT INTO t1 DEFAULT VALUES;
PRAGMA checkpoint_fullsync = FALSE;
BEGIN EXCLUSIVE TRANSACTION;
ATTACH DATABASE ':memory:' AS aux85;
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
UPDATE t1 SET d = 'x' WHERE d IS NOT NULL;
CREATE TRIGGER IF NOT EXISTS trg_t1_5828 AFTER UPDATE OF d ON t1 BEGIN SELECT RAISE(FAIL, 'no'); END;
SELECT TOTAL(a) FROM t1;
PRAGMA mmap_size = 50000000;
DETACH DATABASE aux85;
SELECT * FROM t1 WHERE c > (SELECT AVG(c) FROM t1);
COMMIT TRANSACTION;
ALTER TABLE t1 RENAME TO t1_r4016;
INSERT INTO t1 DEFAULT VALUES;

ALTER TABLE t1 RENAME TO t1_r1422;
```

## 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
Wernher|10|1
von|20|2
Braun|30
Wernher|10
von|20
```

## Expectation

```sql
CREATE TABLE "t2"("b","c","_ROWID_",PRIMARY KEY("b","c","_ROWID_"))WITHOUT ROWID;
Braun|30|3
Wernher|10|1
von|20|2
Braun|30
Wernher|10
von|20
```

## Flag

```

```