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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
+ATTACH DATABASE ':memory:' AS aux1;
+PRAGMA case_sensitive_like = TRUE;
+.filectrl main TRUNCATE CAST(unistr('Test\u0041\u0042') AS ANY)
+BEGIN IMMEDIATE;
+ATTACH DATABASE ':memory:' AS aux95;
+ATTACH DATABASE ':memory:' AS aux6;
+CREATE TABLE main.`t1`(a DATE PRIMARY KEY, b TEXT, c INT, d INT);
+INSERT INTO t1 VALUES (CAST('&' AS NONE), 'Wernher', -ln(-10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000), 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
+DETACH DATABASE aux6;
+ALTER TABLE t1 ADD COLUMN extra_3885 FLOAT COLLATE RTRIM;
+INSERT INTO t1 VALUES (NULL, NULL, NULL, NULL);
+PRAGMA full_column_names = NO;
+ATTACH DATABASE ':memory:' AS aux6;
+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
+DETACH DATABASE aux6;
+ALTER TABLE t1 ADD COLUMN extra_3885 FLOAT COLLATE RTRIM;
+INSERT INTO t1 VALUES (NULL, NULL, NULL, NULL);
+PRAGMA full_column_names = NO;
+
+WITH cte(x) AS (VALUES(NULL),(1),(NULL)) SELECT * FROM cte WHERE x IS NOT NULL;
+SELECT NTH_VALUE(a, 1) OVER (PARTITION BY a ORDER BY a) FROM t1;
+SELECT AVG(b) OVER (PARTITION BY b ORDER BY b GROUPS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) FROM t1;
+CREATE UNIQUE  INDEX IF NOT EXISTS idx_t1_7205 ON t1((a + 1));
+INSERT INTO t1 DEFAULT VALUES;
+DETACH DATABASE aux95;
+DELETE FROM t1 WHERE 1 RETURNING *;
+
+SELECT COUNT(*) FROM t1;
+VACUUM;
+REINDEX t1;
+ROLLBACK;
+SELECT * FROM t1 WHERE +b <> ALL (SELECT b FROM t1);
+INSERT OR ABORT INTO t1 VALUES (-3, -9, 'x', 'x');
+SELECT * FROM t1;
+REINDEX;
+DROP TRIGGER IF EXISTS t1;
+ALTER TABLE t1 DROP COLUMN b;
+ALTER TABLE t1 ADD COLUMN extra_5447 NCHAR(55) UNIQUE;
+SELECT STRING_AGG(c) FROM t1;
+SELECT MAX(d) FROM t1;
+ALTER TABLE t1 RENAME COLUMN a TO a_r5605;
+PRAGMA synchronous;
+DETACH DATABASE aux1;
+ANALYZE;
+```
+
+## 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||1
+von|20|2
+Braun|30
+Wernher|
+von|20
+```
+
+## Expectation
+
+```sql
+CREATE TABLE "t2"("b","c","_ROWID_",PRIMARY KEY("b","c","_ROWID_"))WITHOUT ROWID;
+Braun|30|3
+Wernher||1
+von|20|2
+Braun|30
+Wernher|
+von|20
+```
+
+## Flag
+
+```
+
+```
+