ABAP Select data from SAP table RFFMFG_BAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFFMFG_BAL
*  INTO TABLE @DATA(IT_RFFMFG_BAL2).
*--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_RFFMFG_BAL INDEX 1 INTO DATA(WA_RFFMFG_BAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFFMFG_BAL>-DBBLG = 1.
<RFFMFG_BAL>-BUKRS = 1.
<RFFMFG_BAL>-GJAHR = 1.
<RFFMFG_BAL>-KUNNR = 1.
<RFFMFG_BAL>-LIFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFFMFG_BAL-GRPKEY, sy-vline,
  WA_RFFMFG_BAL-PSOIS, sy-vline,
  WA_RFFMFG_BAL-PSOEA, sy-vline,
  WA_RFFMFG_BAL-FIPEX, sy-vline,
  WA_RFFMFG_BAL-FISTL, sy-vline,
  WA_RFFMFG_BAL-GEBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFFMFG_BAL 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_RFFMFG_BAL 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_RFFMFG_BAL INTO WA_RFFMFG_BAL.


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

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

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

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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_RFFMFG_BAL-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFFMFG_BAL-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LOTKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFFMFG_BAL-LOTKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFFMFG_BAL-LOTKZ.
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_RFFMFG_BAL_STR, 
DBBLG TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
GRPKEY TYPE STRING,
PSOIS TYPE STRING,
PSOEA TYPE STRING,
FIPEX TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
RBELNR TYPE STRING,
KBLNR TYPE STRING,
KBLPOS TYPE STRING,
LOTKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFFMFG_BAL_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_RFFMFG_BAL_STR-DBBLG sy-vline 
WA_RFFMFG_BAL_STR-BUKRS sy-vline 
WA_RFFMFG_BAL_STR-GJAHR sy-vline 
WA_RFFMFG_BAL_STR-KUNNR sy-vline 
WA_RFFMFG_BAL_STR-LIFNR sy-vline 
WA_RFFMFG_BAL_STR-GRPKEY sy-vline 
WA_RFFMFG_BAL_STR-PSOIS sy-vline 
WA_RFFMFG_BAL_STR-PSOEA sy-vline 
WA_RFFMFG_BAL_STR-FIPEX sy-vline 
WA_RFFMFG_BAL_STR-FISTL sy-vline 
WA_RFFMFG_BAL_STR-GEBER sy-vline 
WA_RFFMFG_BAL_STR-RBELNR sy-vline 
WA_RFFMFG_BAL_STR-KBLNR sy-vline 
WA_RFFMFG_BAL_STR-KBLPOS sy-vline 
WA_RFFMFG_BAL_STR-LOTKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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