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ast-project/part1/results/3/bug_1cc5eb42-566a-4813-bc39-f35a131e2a9f_logic.md
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admin fd930e15cb ---
2026-06-24 13:47:14 +02:00

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Summary

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Minimized query

PRAGMA vdbe_debug = NO;
.headers on
ATTACH DATABASE ':memory:' AS aux62;
-- IS

.stats
ATTACH DATABASE ':memory:' AS aux68;
-- -ascii

PRAGMA automatic_index = YES;
CREATE TABLE main.T (
  a TINYINT,
  b REAL
);
INSERT INTO T VALUES ('a',NULL), ('b',-round(trunc(log2(acos(NULL))), json_extract(CAST((x'357972894d4c' + -(-(randomblob('1e10')))) AS FLOAT), '$[#-1]'))), ('c',-(CAST(2147483649 AS FLOA) - 0));
SELECT a,b,
LEAD(b,1) OVER (ORDER BY b DESC) AS c,
NTILE(2) OVER (ORDER BY b DESC) AS d FROM T;
DELETE FROM T WHERE NOT NOT NOT (b IS NULL) ;
SELECT * FROM T WHERE b IN (SELECT b FROM T LIMIT 0);
PRAGMA writable_schema = 1;
SELECT COUNT(*) FROM T;
DETACH DATABASE aux68;
VACUUM;
SELECT b FROM T EXCEPT SELECT b FROM (SELECT * FROM T) AS sub;
DELETE FROM T WHERE a IS NULL RETURNING *;
CREATE TABLE main.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
INSERT INTO t1 DEFAULT VALUES;
CREATE UNIQUE  INDEX IF NOT EXISTS idx_t1_1206 ON t1(lower(d));
CREATE TRIGGER IF NOT EXISTS trg_t1_1786 AFTER UPDATE OF b ON t1 FOR EACH ROW BEGIN SELECT RAISE(FAIL, 'no'); END;
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 t1;
CREATE TABLE T (
  a INTEGER,
  b TEXT,
  c REAL,
  d REAL
);
INSERT INTO T VALUES (1,'a',40.5,-70.0), (2,'b',-10.25,20.5), (3,'c',9e999,-9e999);
SELECT b FROM T WHERE ABS(c) > 5 AND ABS(d) > 5;
DELETE FROM T WHERE rowid = 56;
SELECT * FROM T;
ANALYZE;
REINDEX t1;
CREATE TABLE T (
  a TEXT,
  b TEXT
);
INSERT INTO T VALUES ('a','2020-01-01'), ('b','2026-01-01');
SELECT a,
CAST(
  (julianday('now')-julianday(b))/365.25
  AS INTEGER
) AS c
FROM T;
SELECT COUNT(*) FILTER (WHERE d IS NOT NULL), SUM(rowid) FILTER (WHERE d > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(d) FILTER (WHERE d > 0 AND d < 100), COUNT(*) FILTER (WHERE typeof(d) = "text") FROM t1;
DETACH DATABASE aux62;
SELECT COUNT(*) FILTER (WHERE d IS NOT NULL), SUM(rowid) FILTER (WHERE d > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(d) FILTER (WHERE d > 0 AND d < 100), COUNT(*) FILTER (WHERE typeof(d) = "text") FROM t1;
CREATE TEMP  VIEW IF NOT EXISTS v_t1_4360 AS SELECT c FROM t1;
ALTER TABLE t1 RENAME TO t1_r613;
SELECT AVG(d) FROM t1;
REINDEX t1;
WITH cte AS (SELECT * FROM t1) UPDATE t1 SET a = (SELECT a FROM cte LIMIT 1) WHERE 1=0;
SELECT * FROM T FULL OUTER JOIN t1;
SELECT * FROM T;
ALTER TABLE T DROP COLUMN b;
CREATE TRIGGER IF NOT EXISTS trg_t1_7504 AFTER INSERT ON t1 BEGIN SELECT RAISE(ABORT, 'abort'); END;
INSERT INTO t1 VALUES ('x', 1, 'x', 1) ON CONFLICT(a) DO UPDATE SET a = excluded.a, b = excluded.b, c = excluded.c;
CREATE TABLE T1 (
  A VARCHAR(20) PRIMARY KEY,
  X VARCHAR(10) UNIQUE
);
CREATE TABLE T2 (
  A VARCHAR(20) PRIMARY KEY,
  Y VARCHAR(10) UNIQUE
);
INSERT INTO T1 VALUES ('a', 'm');
INSERT INTO T1 VALUES ('b', 'n');
INSERT INTO T1 VALUES ('c', 'o');
INSERT INTO T2 VALUES ('b', 'k');
INSERT INTO T2 VALUES ('c', 'l');
SELECT A FROM T1 INTERSECT SELECT A FROM T2;
SELECT * FROM T2 WHERE A = (SELECT SUM(A) FROM T2);
ALTER TABLE T2 DROP COLUMN A;
UPDATE T1 SET X = NULL WHERE 1;
INSERT INTO T2 DEFAULT VALUES;
ANALYZE;
INSERT OR REPLACE INTO t1 VALUES ('x', 0, 0, 0);
PRAGMA vdbe_debug = NO;
.headers on
ATTACH DATABASE ':memory:' AS aux62;
-- IS

.stats
ATTACH DATABASE ':memory:' AS aux68;
-- -ascii

PRAGMA automatic_index = YES;
CREATE TABLE main.T (
  a TEXT,
  b REAL
);
INSERT INTO T VALUES ('a',NULL), ('b',-round(trunc(log2(acos(NULL))), json_extract(CAST((x'357972894d4c' + -(-(randomblob(16)))) AS FLOAT), '$[#-1]'))), ('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;
DELETE FROM T WHERE NOT NOT (b IS NULL) ;
SELECT * FROM T WHERE b IN (SELECT b FROM T LIMIT 0);
PRAGMA writable_schema = 1;
SELECT COUNT(*) FROM T;
DETACH DATABASE aux68;
VACUUM;
SELECT b FROM T EXCEPT SELECT b FROM (SELECT * FROM T) AS sub;
DELETE FROM T WHERE a IS NULL RETURNING *;
CREATE TABLE main.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
INSERT INTO t1 DEFAULT VALUES;
CREATE UNIQUE  INDEX IF NOT EXISTS idx_t1_1206 ON t1(lower(d));
CREATE TRIGGER IF NOT EXISTS trg_t1_1786 AFTER UPDATE OF b ON t1 FOR EACH ROW BEGIN SELECT RAISE(FAIL, 'no'); END;
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 t1;
CREATE TABLE T (
  a INTEGER,
  b TEXT,
  c REAL,
  d REAL
);
INSERT INTO T VALUES (1,'a',40.5,-70.0), (2,'b',-10.25,20.5), (3,'c',9e999,-9e999);
SELECT b FROM T WHERE ABS(c) > 5 AND ABS(d) > 5;
DELETE FROM T WHERE rowid = 56;
SELECT * FROM T;
ANALYZE;
REINDEX t1;
SELECT COUNT(*) FILTER (WHERE d IS NOT NULL), SUM(rowid) FILTER (WHERE d > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(d) FILTER (WHERE d > 0 AND d < 100), COUNT(*) FILTER (WHERE typeof(d) = "text") FROM t1;
DETACH DATABASE aux62;
SELECT COUNT(*) FILTER (WHERE d IS NOT NULL), SUM(rowid) FILTER (WHERE d > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(d) FILTER (WHERE d > 0 AND d < 100), COUNT(*) FILTER (WHERE typeof(d) = "text") FROM t1;
CREATE TEMP  VIEW IF NOT EXISTS v_t1_4360 AS SELECT c FROM t1;
ALTER TABLE t1 RENAME TO t1_r613;
SELECT AVG(d) FROM t1;
REINDEX t1;
WITH cte AS (SELECT * FROM t1) UPDATE t1 SET a = (SELECT a FROM cte LIMIT 1) WHERE 1=0;
SELECT * FROM T FULL OUTER JOIN t1;
SELECT * FROM T;
ALTER TABLE T DROP COLUMN b;
CREATE TRIGGER IF NOT EXISTS trg_t1_7504 AFTER INSERT ON t1 BEGIN SELECT RAISE(ABORT, 'abort'); END;
INSERT INTO t1 VALUES ('x', 1, 'x', 1) ON CONFLICT(a) DO UPDATE SET a = excluded.a, b = excluded.b, c = excluded.c;
CREATE TABLE T1 (
  A VARCHAR(20) PRIMARY KEY,
  X VARCHAR(10) UNIQUE
);
CREATE TABLE T2 (
  A VARCHAR(20) PRIMARY KEY,
  Y VARCHAR(10) UNIQUE
);
INSERT INTO T1 VALUES ('a', 'm');
INSERT INTO T1 VALUES ('b', 'n');
INSERT INTO T1 VALUES ('c', 'o');
INSERT INTO T2 VALUES ('b', 'k');
INSERT INTO T2 VALUES ('c', 'l');
SELECT A FROM T1 INTERSECT SELECT A FROM T2;
SELECT * FROM T2 WHERE A = (SELECT SUM(A) FROM T2);
ALTER TABLE T2 DROP COLUMN A;
UPDATE T1 SET X = NULL WHERE 1;
INSERT INTO T2 DEFAULT VALUES;
ANALYZE;
INSERT OR REPLACE INTO t1 VALUES ('x', 0, 0, 0);
PRAGMA vdbe_debug = NO;
.headers on
ATTACH DATABASE ':memory:' AS aux62;
-- IS

.stats
ATTACH DATABASE ':memory:' AS aux68;
-- -ascii

PRAGMA automatic_index = YES;
CREATE TABLE main.T (
  a TEXT,
  b REAL
);
INSERT INTO T VALUES ('a',NULL), ('b',-round(trunc(log2(acos(NULL))), json_extract(CAST((x'357972894d4c' + -(-(randomblob(16)))) AS FLOAT), '$[#-1]'))), ('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;
DELETE FROM T WHERE NOT NOT (b IS NULL) ;
SELECT * FROM T WHERE b IN (SELECT b FROM T LIMIT 0);
PRAGMA writable_schema = 1;
SELECT COUNT(*) FROM T;
DETACH DATABASE aux68;
VACUUM;
SELECT b FROM T EXCEPT SELECT b FROM (SELECT * FROM T) AS sub;
DELETE FROM T WHERE a IS NULL RETURNING *;
CREATE TABLE main.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
INSERT INTO t1 DEFAULT VALUES;
CREATE UNIQUE  INDEX IF NOT EXISTS idx_t1_1206 ON t1(lower(d));
CREATE TRIGGER IF NOT EXISTS trg_t1_1786 AFTER UPDATE OF b ON t1 FOR EACH ROW BEGIN SELECT RAISE(FAIL, 'no'); END;
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 t1;
CREATE TABLE T (
  a INTEGER,
  b TEXT,
  c REAL,
  d REAL
);
INSERT INTO T VALUES (1,'a',40.5,-70.0), (2,'b',-10.25,20.5), (3,'c',9e999,-9e999);
SELECT b FROM T WHERE ABS(c) > 5 AND ABS(d) > 5;
DELETE FROM T WHERE rowid = 56;
SELECT * FROM T;
ANALYZE;
REINDEX t1;
SELECT COUNT(*) FILTER (WHERE d IS NOT NULL), SUM(rowid) FILTER (WHERE d > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(d) FILTER (WHERE d > 0 AND d < 100), COUNT(*) FILTER (WHERE typeof(d) = "text") FROM t1;
DETACH DATABASE aux62;
SELECT COUNT(*) FILTER (WHERE d IS NOT NULL), SUM(rowid) FILTER (WHERE d > 0), COUNT(*) FILTER (WHERE 1=0), COUNT(*) FILTER (WHERE 1=1), COUNT(*) FILTER (WHERE NULL), AVG(d) FILTER (WHERE d > 0 AND d < 100), COUNT(*) FILTER (WHERE typeof(d) = "text") FROM t1;
CREATE TEMP  VIEW IF NOT EXISTS v_t1_4360 AS SELECT c FROM t1;
ALTER TABLE t1 RENAME TO t1_r613;
SELECT AVG(d) FROM t1;
REINDEX t1;
WITH cte AS (SELECT * FROM t1) UPDATE t1 SET a = (SELECT a FROM cte LIMIT 1) WHERE 1=0;
SELECT * FROM T FULL OUTER JOIN t1;
SELECT * FROM T;
ALTER TABLE T DROP COLUMN b;
CREATE TRIGGER IF NOT EXISTS trg_t1_7504 AFTER INSERT ON t1 BEGIN SELECT RAISE(ABORT, 'abort'); END;
INSERT INTO t1 VALUES ('x', 1, 'x', 1) ON CONFLICT(a) DO UPDATE SET a = excluded.a, b = excluded.b, c = excluded.c;
CREATE TABLE T1 (
  A VARCHAR(20) PRIMARY KEY,
  X VARCHAR(10) UNIQUE
);
CREATE TABLE T2 (
  A VARCHAR(20) PRIMARY KEY,
  Y VARCHAR(10) UNIQUE
);
INSERT INTO T1 VALUES ('a', 'm');
INSERT INTO T1 VALUES ('b', 'n');
INSERT INTO T1 VALUES ('c', 'o');
INSERT INTO T2 VALUES ('b', 'k');
INSERT INTO T2 VALUES ('c', 'l');
SELECT A FROM T1 INTERSECT SELECT A FROM T2;
SELECT * FROM T2 WHERE A = (SELECT SUM(A) FROM T2);
ALTER TABLE T2 DROP COLUMN A;
UPDATE T1 SET X = NULL WHERE 1;
INSERT INTO T2 DEFAULT VALUES;
ANALYZE;
INSERT OR REPLACE INTO t1 VALUES ('x', 0, 0, 0);
WITH cte AS (SELECT X, RANK() OVER (ORDER BY X) AS rnk FROM T1) SELECT * FROM cte;
SELECT * FROM T AS a FULL OUTER JOIN T1 AS b ON a.rowid = b.rowid;
SELECT COUNT(*) FROM T2;
SELECT * FROM t1;
ALTER TABLE T2 RENAME TO T2_r8673;
SELECT * FROM (SELECT * FROM T1) AS sub;
CREATE TRIGGER IF NOT EXISTS trg_T_9663 BEFORE UPDATE ON T BEGIN INSERT INTO T(b) VALUES (NULL); END;
ALTER TABLE T1 RENAME COLUMN X TO X_r3745;
UPDATE T1 SET X = NULL;

SELECT COUNT(*) FROM T2;
INSERT INTO T VALUES (NULL, NULL, NULL, NULL);

Actual output

Memory Used:                         79920 (max 79920) bytes
Number of Outstanding Allocations:   158 (max 158)
Number of Pcache Overflow Bytes:     16928 (max 16928) bytes
Largest Allocation:                  48000 bytes
Largest Pcache Allocation:           4360 bytes
Lookaside Slots Used:                34 (max 80)
Successful lookaside attempts:       143
Lookaside failures due to size:      0
Lookaside failures due to OOM:       0
Pager Heap Usage:                    18496 bytes
Page cache hits:                     0
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Schema Heap Usage:                   1104 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            10409
Bytes sent to write():               0
Read() system calls:                 13
Write() system calls:                0
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
a|b|c|d
c|-2147483649.0||1
a|||1
b|||2
COUNT(*)
2
CREATE TABLE "t2"("b","c","_ROWID_",PRIMARY KEY("b","c","_ROWID_"))WITHOUT ROWID;
WARNING: writing to an imposter table will corrupt the "t1bc" index!
b|c|_ROWID_
Braun|30|3
Wernher|10|1
von|20|2
b|c
Braun|30
Wernher|10
von|20

Expectation

Memory Used:                         80568 (max 80568) bytes
Number of Outstanding Allocations:   168 (max 168)
Number of Pcache Overflow Bytes:     16944 (max 16944) bytes
Largest Allocation:                  48000 bytes
Largest Pcache Allocation:           4368 bytes
Lookaside Slots Used:                50 (max 91)
Successful lookaside attempts:       149
Lookaside failures due to size:      0
Lookaside failures due to OOM:       0
Pager Heap Usage:                    18512 bytes
Page cache hits:                     0
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Temporary data spilled to disk:      0
Schema Heap Usage:                   944 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            11185
Bytes sent to write():               0
Read() system calls:                 14
Write() system calls:                0
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
a|b|c|d
c|-2147483649.0||1
a|||1
b|||2
COUNT(*)
2
CREATE TABLE "t2"("b","c","_ROWID_",PRIMARY KEY("b","c","_ROWID_"))WITHOUT ROWID;
b|c|_ROWID_
Braun|30|3
Wernher|10|1
von|20|2
b|c
Braun|30
Wernher|10
von|20

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