## 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 T (
  a INTEGER,
  b REAL
);
INSERT INTO T VALUES (unhex(1),1.5), (2,-2.5), (3,0.0);
CREATE INDEX c
ON T(b);
SELECT * FROM T WHERE b >= -2.5 AND b < 2.0;
```

## Actual output

```sql
Parse error near line 5: no such function: unhex
  INSERT INTO T VALUES (unhex(1),1.5), (2,-2.5), (3,0.0);
                        ^--- error here
```

## Expectation

```sql

```

## Flag

```

```

