static void checkColumnsResolved(HsqlList set) {
if (set != null && !set.isEmpty()) {
StringBuffer sb = new StringBuffer();
Expression e = (Expression) set.get(0);
if (e instanceof ExpressionColumn) {
ExpressionColumn c = (ExpressionColumn) e;
if (c.schema != null) {
sb.append(c.schema + '.');
}
if (c.tableName != null) {
sb.append(c.tableName + '.');
}
throw Error.error(ErrorCode.X_42501, sb.toString() + c.getColumnName());
} else {
OrderedHashSet newSet = new OrderedHashSet();
e.collectAllExpressions(
newSet, Expression.columnExpressionSet, Expression.emptyExpressionSet);
// throw with column name
checkColumnsResolved(newSet);
// throw anyway if not found
throw Error.error(ErrorCode.X_42501);
}
}
}
