ABAP Select data from SAP table RCPS_API_DOC into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCPS_API_DOC 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 RCPS_API_DOC. 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 RCPS_API_DOC 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_RCPS_API_DOC TYPE STANDARD TABLE OF RCPS_API_DOC,
      WA_RCPS_API_DOC TYPE RCPS_API_DOC,
      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: <RCPS_API_DOC> TYPE RCPS_API_DOC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCPS_API_DOC
*  INTO TABLE @DATA(IT_RCPS_API_DOC2).
*--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_RCPS_API_DOC INDEX 1 INTO DATA(WA_RCPS_API_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCPS_API_DOC>-MANDT = 1.
<RCPS_API_DOC>-GUID = 1.
<RCPS_API_DOC>-AENNR = 1.
<RCPS_API_DOC>-GUID_MAST = 1.
<RCPS_API_DOC>-GUID_ROOT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCPS_API_DOC-AENNR_ROOT, sy-vline,
  WA_RCPS_API_DOC-LINEMODE, sy-vline,
  WA_RCPS_API_DOC-PVGUID, sy-vline,
  WA_RCPS_API_DOC-DOKAR, sy-vline,
  WA_RCPS_API_DOC-DOKNR, sy-vline,
  WA_RCPS_API_DOC-DOKVR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCPS_API_DOC 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_RCPS_API_DOC 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_RCPS_API_DOC INTO WA_RCPS_API_DOC.


*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 AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCPS_API_DOC-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCPS_API_DOC-AENNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCPS_API_DOC-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCPS_API_DOC-DOKNR.
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_RCPS_API_DOC_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
AENNR TYPE STRING,
GUID_MAST TYPE STRING,
GUID_ROOT TYPE STRING,
AENNR_ROOT TYPE STRING,
LINEMODE TYPE STRING,
PVGUID TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DOKOB TYPE STRING,
OBJKY TYPE STRING,
DELFLAG TYPE STRING,
FLG_RELEASE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCPS_API_DOC_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_RCPS_API_DOC_STR-MANDT sy-vline 
WA_RCPS_API_DOC_STR-GUID sy-vline 
WA_RCPS_API_DOC_STR-AENNR sy-vline 
WA_RCPS_API_DOC_STR-GUID_MAST sy-vline 
WA_RCPS_API_DOC_STR-GUID_ROOT sy-vline 
WA_RCPS_API_DOC_STR-AENNR_ROOT sy-vline 
WA_RCPS_API_DOC_STR-LINEMODE sy-vline 
WA_RCPS_API_DOC_STR-PVGUID sy-vline 
WA_RCPS_API_DOC_STR-DOKAR sy-vline 
WA_RCPS_API_DOC_STR-DOKNR sy-vline 
WA_RCPS_API_DOC_STR-DOKVR sy-vline 
WA_RCPS_API_DOC_STR-DOKTL sy-vline 
WA_RCPS_API_DOC_STR-DOKOB sy-vline 
WA_RCPS_API_DOC_STR-OBJKY sy-vline 
WA_RCPS_API_DOC_STR-DELFLAG sy-vline 
WA_RCPS_API_DOC_STR-FLG_RELEASE sy-vline      INTO ld_text SEPARATED BY SPACE.

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