ABAP Select data from SAP table ROG_SEROBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROG_SEROBJ
*  INTO TABLE @DATA(IT_ROG_SEROBJ2).
*--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_ROG_SEROBJ INDEX 1 INTO DATA(WA_ROG_SEROBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROG_SEROBJ>-MANDT = 1.
<ROG_SEROBJ>-OBKNR = 1.
<ROG_SEROBJ>-OBZAE = 1.
<ROG_SEROBJ>-EQUNR = 1.
<ROG_SEROBJ>-SERNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROG_SEROBJ-MATNR, sy-vline,
  WA_ROG_SEROBJ-SDAUFNR, sy-vline,
  WA_ROG_SEROBJ-POSNR, sy-vline,
  WA_ROG_SEROBJ-KUNDE, sy-vline,
  WA_ROG_SEROBJ-VBTYP, sy-vline,
  WA_ROG_SEROBJ-VTWEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROG_SEROBJ 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_ROG_SEROBJ 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_ROG_SEROBJ INTO WA_ROG_SEROBJ.


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

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ROG_SEROBJ-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROG_SEROBJ-SERNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROG_SEROBJ-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROG_SEROBJ-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field KUNDE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROG_SEROBJ-KUNDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROG_SEROBJ-KUNDE.
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_ROG_SEROBJ_STR, 
MANDT TYPE STRING,
OBKNR TYPE STRING,
OBZAE TYPE STRING,
EQUNR TYPE STRING,
SERNR TYPE STRING,
MATNR TYPE STRING,
SDAUFNR TYPE STRING,
POSNR TYPE STRING,
KUNDE TYPE STRING,
VBTYP TYPE STRING,
VTWEG TYPE STRING,
VKORG TYPE STRING,
SPART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROG_SEROBJ_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_ROG_SEROBJ_STR-MANDT sy-vline 
WA_ROG_SEROBJ_STR-OBKNR sy-vline 
WA_ROG_SEROBJ_STR-OBZAE sy-vline 
WA_ROG_SEROBJ_STR-EQUNR sy-vline 
WA_ROG_SEROBJ_STR-SERNR sy-vline 
WA_ROG_SEROBJ_STR-MATNR sy-vline 
WA_ROG_SEROBJ_STR-SDAUFNR sy-vline 
WA_ROG_SEROBJ_STR-POSNR sy-vline 
WA_ROG_SEROBJ_STR-KUNDE sy-vline 
WA_ROG_SEROBJ_STR-VBTYP sy-vline 
WA_ROG_SEROBJ_STR-VTWEG sy-vline 
WA_ROG_SEROBJ_STR-VKORG sy-vline 
WA_ROG_SEROBJ_STR-SPART sy-vline      INTO ld_text SEPARATED BY SPACE.

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