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ast-project/part1/results/3/bug_5a61331b-b2e7-4537-9df9-1fea6ad0391f_logic.md
T
2026-06-24 13:47:14 +02:00

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Summary

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Minimized query

PRAGMA secure_delete = 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
CREATE TABLE T (
  a TEXT,
  b TEXT,
  c REAL
);
INSERT INTO T VALUES ('a','b',5.0), ('a','c',5.0), ('b','d',-8.25);
SELECT a,b,c,
RANK() OVER (PARTITION BY a ORDER BY c DESC) AS d FROM T;

Actual output

0
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

0
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

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