在RFC_READ_TABLE OPTIONS中使用子查询

Question

是否可以在OPTIONS参数表中为SAP中的RFC_READ_TABLE使用子查询？

像这样的东西

field in (select otherfield from othertable where ...)

Answer 1

没有。指定包含括号的OPTIONS参数将导致错误（ABEND转储）。

来自SAP doco（4.6C）：

WHERE (itab) 

The internal table itab may only have one field. This must have type C,
and may not be longer than 72 characters. You must specify itab in
parentheses, without a space between the parentheses and the table name. 
The condition contained in the internal table must have the same form as
a corresponding condition in the ABAP source code. The following
restrictions apply: 
- You can only use literals as values, not variables. 
- You cannot use the IN operator in the form f1 IN itab1. 
The internal table itab may be empty.