ABAP Select data from SAP table /NFM/PROC_DIA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /NFM/PROC_DIA 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 /NFM/PROC_DIA. 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 /NFM/PROC_DIA 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_/NFM/PROC_DIA TYPE STANDARD TABLE OF /NFM/PROC_DIA,
      WA_/NFM/PROC_DIA TYPE /NFM/PROC_DIA,
      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: </NFM/PROC_DIA> TYPE /NFM/PROC_DIA.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /NFM/PROC_DIA
  INTO TABLE IT_/NFM/PROC_DIA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /NFM/PROC_DIA
*  INTO TABLE @DATA(IT_/NFM/PROC_DIA2).
*--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_/NFM/PROC_DIA INDEX 1 INTO DATA(WA_/NFM/PROC_DIA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/NFM/PROC_DIA ASSIGNING </NFM/PROC_DIA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</NFM/PROC_DIA>-MANDT = 1.
</NFM/PROC_DIA>-NES = 1.
</NFM/PROC_DIA>-KAPPL = 1.
</NFM/PROC_DIA>-ORG = 1.
</NFM/PROC_DIA>-NESTX = 1.

ENDLOOP.

LOOP AT IT_/NFM/PROC_DIA INTO WA_/NFM/PROC_DIA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/NFM/PROC_DIA-BMGKPF, sy-vline,
  WA_/NFM/PROC_DIA-BMG, sy-vline,
  WA_/NFM/PROC_DIA-BMEKPF, sy-vline,
  WA_/NFM/PROC_DIA-BME, sy-vline,
  WA_/NFM/PROC_DIA-BZUKPF, sy-vline,
  WA_/NFM/PROC_DIA-BZU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/NFM/PROC_DIA 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_/NFM/PROC_DIA 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_/NFM/PROC_DIA INTO WA_/NFM/PROC_DIA.


*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 CUNIT, internal->external for field BMEKPF
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/NFM/PROC_DIA-BMEKPF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/NFM/PROC_DIA-BMEKPF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/NFM/PROC_DIA-BME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/NFM/PROC_DIA-BME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field GEW1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/NFM/PROC_DIA-GEW1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/NFM/PROC_DIA-GEW1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEW2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/NFM/PROC_DIA-GEW2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/NFM/PROC_DIA-GEW2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BME2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/NFM/PROC_DIA-BME2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/NFM/PROC_DIA-BME2.
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_/NFM/PROC_DIA_STR, 
MANDT TYPE STRING,
NES TYPE STRING,
KAPPL TYPE STRING,
ORG TYPE STRING,
NESTX TYPE STRING,
BMGKPF TYPE STRING,
BMG TYPE STRING,
BMEKPF TYPE STRING,
BME TYPE STRING,
BZUKPF TYPE STRING,
BZU TYPE STRING,
PRKKPF TYPE STRING,
PRK TYPE STRING,
NEB TYPE STRING,
BCU TYPE STRING,
BWR TYPE STRING,
AKT TYPE STRING,
VTXTK TYPE STRING,
WAERS TYPE STRING,
MOD TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
VGW TYPE STRING,
VGE TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AEZET TYPE STRING,
NEMOD TYPE STRING,
KZINFO TYPE STRING,
KGW1 TYPE STRING,
GEW1 TYPE STRING,
GEW2 TYPE STRING,
KGE TYPE STRING,
BME2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/NFM/PROC_DIA_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_/NFM/PROC_DIA_STR-MANDT sy-vline 
WA_/NFM/PROC_DIA_STR-NES sy-vline 
WA_/NFM/PROC_DIA_STR-KAPPL sy-vline 
WA_/NFM/PROC_DIA_STR-ORG sy-vline 
WA_/NFM/PROC_DIA_STR-NESTX sy-vline 
WA_/NFM/PROC_DIA_STR-BMGKPF sy-vline 
WA_/NFM/PROC_DIA_STR-BMG sy-vline 
WA_/NFM/PROC_DIA_STR-BMEKPF sy-vline 
WA_/NFM/PROC_DIA_STR-BME sy-vline 
WA_/NFM/PROC_DIA_STR-BZUKPF sy-vline 
WA_/NFM/PROC_DIA_STR-BZU sy-vline 
WA_/NFM/PROC_DIA_STR-PRKKPF sy-vline 
WA_/NFM/PROC_DIA_STR-PRK sy-vline 
WA_/NFM/PROC_DIA_STR-NEB sy-vline 
WA_/NFM/PROC_DIA_STR-BCU sy-vline 
WA_/NFM/PROC_DIA_STR-BWR sy-vline 
WA_/NFM/PROC_DIA_STR-AKT sy-vline 
WA_/NFM/PROC_DIA_STR-VTXTK sy-vline 
WA_/NFM/PROC_DIA_STR-WAERS sy-vline 
WA_/NFM/PROC_DIA_STR-MOD sy-vline 
WA_/NFM/PROC_DIA_STR-MATNR sy-vline 
WA_/NFM/PROC_DIA_STR-MAKTX sy-vline 
WA_/NFM/PROC_DIA_STR-VGW sy-vline 
WA_/NFM/PROC_DIA_STR-VGE sy-vline 
WA_/NFM/PROC_DIA_STR-ERNAM sy-vline 
WA_/NFM/PROC_DIA_STR-ERDAT sy-vline 
WA_/NFM/PROC_DIA_STR-ERZET sy-vline 
WA_/NFM/PROC_DIA_STR-AENAM sy-vline 
WA_/NFM/PROC_DIA_STR-AEDAT sy-vline 
WA_/NFM/PROC_DIA_STR-AEZET sy-vline 
WA_/NFM/PROC_DIA_STR-NEMOD sy-vline 
WA_/NFM/PROC_DIA_STR-KZINFO sy-vline 
WA_/NFM/PROC_DIA_STR-KGW1 sy-vline 
WA_/NFM/PROC_DIA_STR-GEW1 sy-vline 
WA_/NFM/PROC_DIA_STR-GEW2 sy-vline 
WA_/NFM/PROC_DIA_STR-KGE sy-vline 
WA_/NFM/PROC_DIA_STR-BME2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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