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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 aux9;
+.nullvalue cos(2)32327d3-536b-41de-a764-a6301986aeab
+PRAGMA query_only = OFF;
+PRAGMA reverse_unordered_selects = NO;
+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
+PRAGMA count_changes = 0;
+BEGIN DEFERRED TRANSACTION;
+CREATE TABLE t61(a);
+CREATE TABLE t62(b);
+INSERT INTO t61 VALUES(json_array(like('*111', 111), 111));
+INSERT INTO t62 VALUES(222);
+SELECT a FROM t61 WHERE 0 UNION ALL SELECT b FROM t62;
+SELECT a FROM t61 UNION SELECT b FROM t62 WHERE 0;
+SELECT a FROM t61 WHERE 0 UNION SELECT b FROM t62;
+COMMIT;
+SELECT COUNT(*) FROM t61;
+SELECT COUNT(*) FILTER (WHERE a IS NOT NULL), SUM(rowid) FILTER (WHERE a > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(a) FILTER (WHERE a > 0 AND a < 100), COUNT(*) FILTER (WHERE typeof(a) = "text") FROM t61;
+SELECT AVG(b) FROM t62;
+VACUUM;
+SELECT a FROM t61 INTERSECT SELECT a FROM (SELECT * FROM t61) AS sub;
+SELECT COUNT(*) FROM t61;
+ALTER TABLE t61 ADD COLUMN extra_8289 SMALLINT DEFAULT (abs(random()) % 1000);
+ALTER TABLE t61 RENAME COLUMN a TO a_r2610;
+CREATE TABLE T (
+  a INTEGER,
+  b TEXT,
+  c REAL
+);
+INSERT INTO T VALUES (1,'a',3.14), (1,'b',-7.75), (2,'c',-9e999);
+SELECT b,a,c,
+RANK() OVER (PARTITION BY a ORDER BY c DESC) AS d FROM T;
+SELECT COUNT(*) FILTER (WHERE a IS NOT NULL), SUM(rowid) FILTER (WHERE a > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(a) FILTER (WHERE a > 0 AND a < 100), COUNT(*) FILTER (WHERE typeof(a) = "text") FROM t61;
+ALTER TABLE t61 RENAME COLUMN a TO a_r2555;
+SELECT NTH_VALUE(a, a) OVER (PARTITION BY a ORDER BY a RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING) FROM t61;
+SELECT COUNT(*) FROM t61;
+CREATE TABLE T1 (
+  A VARCHAR(20),
+  X VARCHAR(10),
+  PRIMARY KEY (A, X)
+);
+CREATE TABLE T2 (
+  A VARCHAR(20),
+  Y VARCHAR(10),
+  PRIMARY KEY (A, Y)
+);
+INSERT INTO T1 VALUES ('a', 'm');
+INSERT INTO T1 VALUES ('b', 'n');
+INSERT INTO T1 VALUES ('c', 'o');
+INSERT INTO T2 VALUES ('b', 'k');
+SELECT A FROM T1 EXCEPT SELECT A FROM T2;
+VACUUM;
+SELECT A FROM T2 UNION SELECT A FROM (SELECT * FROM T2) AS sub;
+SELECT COUNT(b) FILTER (WHERE b IS NOT NULL) OVER (PARTITION BY b ORDER BY b ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING EXCLUDE GROUP) FROM T;
+PRAGMA query_only = ON;
+DETACH DATABASE aux9;
+VACUUM main;
+```
+
+## 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
+
+```
+
+```
+