Support #4967
Updated by Carsten Rose over 6 years ago
* Rename 'VAR_ADD_BY_SQL' to 'FILL_STORE_SYSTEM_BY_SQL_1'
* Implement up to 3 independent to SQLs
* Optional error message, if not exact one record
* Columns in the Query, starting with an leading '_', should be renamed to 'without the leading "_"'.