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ast-project/part1/results/3/bug_13964ea0-49f9-4d6c-8c7b-c891eb3fa0e2_logic.md
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 = 0;
ATTACH DATABASE (':memory:' || '') AS aux12;
PRAGMA checkpoint_fullsync = OFF;
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
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(99);
SELECT sum((SELECT 1 FROM (SELECT 2 WHERE x IS NULL) WHERE 0)) FROM t1;
DELETE FROM t1 WHERE x IS NULL;
INSERT INTO t1 VALUES (NULL);
SELECT COUNT(*) FROM t1;
DETACH DATABASE aux12;
INSERT INTO t1 VALUES (NULL);
UPDATE t1 SET x = CURRENT_TIMESTAMP WHERE x IS NOT NULL RETURNING *;
ALTER TABLE t1 ADD COLUMN extra_5709 FLOAT;
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;
CREATE INDEX IF NOT EXISTS idx_t1_6962 ON t1(x COLLATE NOCASE) WHERE x > 0;
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;
ALTER TABLE t1 ADD COLUMN extra_9323 NATIVE CHARACTER(70)NVARCHAR(100) COLLATE RTRIM;
```
## 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
```
```