[英]get one field from itab with read table TRANSPORTING
I trying to get one field from interal table like this:我试图从内部表中获取一个字段,如下所示:
READ TABLE tbl_peps TRANSPORTING ususap INTO lv_responsable WITH KEY usr03 = wa_tbl_prps-usr03.
This sentence is wrong, it gives me an error这句话是错误的,它给了我一个错误
tbl_peps and lv_responsable are incompatibles
tbl_peps 和 lv_responsable 不兼容
. .
Is there a way to achieve that using "transporting fields"?有没有办法使用“传输场”来实现这一目标?
With the new syntax (At least ABAP 7.40) you do not need a workarea anymore.使用新语法(至少 ABAP 7.40),您不再需要工作区。 The coding for your example would be:
您的示例的编码将是:
try.
lv_responsable = tbl_peps[ usr03 = wa_tbl_prps-usr03 ]-ususap.
catch CX_SY_ITAB_LINE_NOT_FOUND.
endtry.
Further info of the new table expressions can be found here .可以在此处找到有关新表表达式的更多信息。
According to the ABAP Documentation on READ TABLE
, if you use the transporting-option the work area receiving the data must be compatible with the line type of the table you read from.根据
READ TABLE
上的ABAP 文档,如果您使用传输选项,则接收数据的工作区必须与您读取的表的行类型兼容。 Your declared variable lv_responsable
seems to be incompatible with tbl_peps
, therefore the error when checking your code.您声明的变量
lv_responsable
似乎与tbl_peps
不兼容,因此检查代码时会出错。
This should work:这应该有效:
DATA:
wa_peps like line of tbl_peps.
READ TABLE tbl_peps TRANSPORTING ususap INTO wa_peps WITH KEY usr03 = wa_tbl_prps-usr03.
MOVE wa_peps-ususap TO lv_responsable.
The reason you would want to transport only one field is to save memory and speed up processing.您只想传输一个字段的原因是为了节省内存并加快处理速度。 There is a better way to do that, use field symbols:
有一个更好的方法来做到这一点,使用字段符号:
READ TABLE tbl_peps
ASSIGNING FIELD-SYMBOL(<fs_responsable>)
WITH KEY usr03 = wa_tbl_prps-usr03.
The inline definition only works with ABAP 740 and up, but you can do this in earlier versions:内联定义仅适用于 ABAP 740 及更高版本,但您可以在早期版本中执行此操作:
FIELD-SYMBOLS: <fs_responsable> LIKE LINE OF tbl_peps.
READ TABLE tbl_peps
ASSIGNING <fs_responsable>
WITH KEY usr03 = wa_tbl_prps-usr03.
There is no way.不可能。
Lv_responsable
has to be defined as follows. Lv_responsable
必须定义如下。
DATA: lv_responsable LIKE LINE OF tbl_peps.
Only then can you assign the value in field lv_responsable-ususap
to another variable of the field type.只有这样,您才能将字段
lv_responsable-ususap
的值分配给该字段类型的另一个变量。
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