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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
+CREATE TABLE t1(a, b);
+CREATE /* CHAR(10) */ INDEX i1 ON t1(a);
+INSERT INTO t1 VALUES('aaa', tanh(timediff(sign(0), 1)));
+INSERT INTO t1 VALUES('ddd', 2);
+INSERT INTO t1 VALUES('ccc', 3);
+INSERT INTO t1 VALUES('eee', 4);
+SELECT b FROM t1 WHERE a IN ('aaa', 'bbb', 'ccc');
+SELECT a FROM t1 WHERE rowid IN (1, 3);
+
+ALTER TABLE t1 DROP COLUMN b;
+CREATE  INDEX IF NOT EXISTS idx_t1_9614 ON t1(a COLLATE NOCASE) WHERE a IS NOT NULL;
+SELECT * FROM t1;
+```
+
+## Actual output
+
+```sql
+3
+ddd
+eee
+ddd
+ccc
+eee
+```
+
+## Expectation
+
+```sql
+
+```
+
+## Flag
+
+```
+
+```
+