ABAP Select data from SAP table EMCS_S_AIF_ARC_REQUEST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EMCS_S_AIF_ARC_REQUEST table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to EMCS_S_AIF_ARC_REQUEST. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the EMCS_S_AIF_ARC_REQUEST table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_EMCS_S_AIF_ARC_REQUEST TYPE STANDARD TABLE OF EMCS_S_AIF_ARC_REQUEST,
      WA_EMCS_S_AIF_ARC_REQUEST TYPE EMCS_S_AIF_ARC_REQUEST,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <EMCS_S_AIF_ARC_REQUEST> TYPE EMCS_S_AIF_ARC_REQUEST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EMCS_S_AIF_ARC_REQUEST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EMCS_S_AIF_ARC_REQUEST
  INTO TABLE IT_EMCS_S_AIF_ARC_REQUEST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMCS_S_AIF_ARC_REQUEST
*  INTO TABLE @DATA(IT_EMCS_S_AIF_ARC_REQUEST2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_EMCS_S_AIF_ARC_REQUEST INDEX 1 INTO DATA(WA_EMCS_S_AIF_ARC_REQUEST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EMCS_S_AIF_ARC_REQUEST ASSIGNING <EMCS_S_AIF_ARC_REQUEST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMCS_S_AIF_ARC_REQUEST>-OUTBOUNDDELIVERYNUMBER = 1.
<EMCS_S_AIF_ARC_REQUEST>-OUTBOUNDDELIVERYDATE = 1.
<EMCS_S_AIF_ARC_REQUEST>-DOCPOSTINGDATETIME = 1.
<EMCS_S_AIF_ARC_REQUEST>-DELIVERYTYPE = 1.
<EMCS_S_AIF_ARC_REQUEST>-CONSIGNEEPLANT = 1.

ENDLOOP.

LOOP AT IT_EMCS_S_AIF_ARC_REQUEST INTO WA_EMCS_S_AIF_ARC_REQUEST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMCS_S_AIF_ARC_REQUEST-MODEOFTRANSPORT, sy-vline,
  WA_EMCS_S_AIF_ARC_REQUEST-SHIPTO, sy-vline,
  WA_EMCS_S_AIF_ARC_REQUEST-COMPANYCODE, sy-vline,
  WA_EMCS_S_AIF_ARC_REQUEST-SHIPPINGCONDITION, sy-vline,
  WA_EMCS_S_AIF_ARC_REQUEST-INCOTERM, sy-vline,
  WA_EMCS_S_AIF_ARC_REQUEST-MATERIALDOCUMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMCS_S_AIF_ARC_REQUEST you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_EMCS_S_AIF_ARC_REQUEST TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_EMCS_S_AIF_ARC_REQUEST INTO WA_EMCS_S_AIF_ARC_REQUEST.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field OUTBOUNDDELIVERYNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMCS_S_AIF_ARC_REQUEST-OUTBOUNDDELIVERYNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMCS_S_AIF_ARC_REQUEST-OUTBOUNDDELIVERYNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIPTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMCS_S_AIF_ARC_REQUEST-SHIPTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMCS_S_AIF_ARC_REQUEST-SHIPTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MATERIALDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMCS_S_AIF_ARC_REQUEST-MATERIALDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMCS_S_AIF_ARC_REQUEST-MATERIALDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MATERIALDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_EMCS_S_AIF_ARC_REQUEST-MATERIALDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMCS_S_AIF_ARC_REQUEST-MATERIALDOCUMENTYEAR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EMCS_S_AIF_ARC_REQUEST_STR, 
OUTBOUNDDELIVERYNUMBER TYPE STRING,
OUTBOUNDDELIVERYDATE TYPE STRING,
DOCPOSTINGDATETIME TYPE STRING,
DELIVERYTYPE TYPE STRING,
CONSIGNEEPLANT TYPE STRING,
MODEOFTRANSPORT TYPE STRING,
SHIPTO TYPE STRING,
COMPANYCODE TYPE STRING,
SHIPPINGCONDITION TYPE STRING,
INCOTERM TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
TO_ITEMS TYPE STRING,
TO_MATERIALDOCUMENTITEMS TYPE STRING,
TO_PARTNERS TYPE STRING,
TO_PACKAGINGINFORMATION TYPE STRING,
TO_SHIPPINGINFORMATION TYPE STRING,
HTTPRESPONSE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMCS_S_AIF_ARC_REQUEST_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_EMCS_S_AIF_ARC_REQUEST_STR-OUTBOUNDDELIVERYNUMBER sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-OUTBOUNDDELIVERYDATE sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-DOCPOSTINGDATETIME sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-DELIVERYTYPE sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-CONSIGNEEPLANT sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-MODEOFTRANSPORT sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-SHIPTO sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-COMPANYCODE sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-SHIPPINGCONDITION sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-INCOTERM sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-MATERIALDOCUMENT sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-TO_ITEMS sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-TO_MATERIALDOCUMENTITEMS sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-TO_PARTNERS sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-TO_PACKAGINGINFORMATION sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-TO_SHIPPINGINFORMATION sy-vline 
WA_EMCS_S_AIF_ARC_REQUEST_STR-HTTPRESPONSE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.