beatum opened a new pull request, #8339:
URL: https://github.com/apache/hop/pull/8339
### Database Join now supports named placeholders in SQL using:
```
?{fieldName}
```
#### You can also mix named and positional placeholders in the same SQL.
Example:
```sql
SELECT order_id, total
FROM orders
WHERE customer_id = ?{customer_id}
AND status = ?
```
### How binding works:
?{customer_id} binds by incoming field name (customer_id).
? binds by positional parameter mapping from the step parameter grid
(existing behavior).
SQL is converted to prepared-statement form before execution.
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