ABAP Select data from SAP table DN1PM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DN1PM 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 DN1PM. 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 DN1PM 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_DN1PM TYPE STANDARD TABLE OF DN1PM,
      WA_DN1PM TYPE DN1PM,
      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: <DN1PM> TYPE DN1PM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DN1PM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DN1PM
  INTO TABLE IT_DN1PM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DN1PM
*  INTO TABLE @DATA(IT_DN1PM2).
*--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_DN1PM INDEX 1 INTO DATA(WA_DN1PM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DN1PM ASSIGNING <DN1PM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DN1PM>-MANDT = 1.
<DN1PM>-EINRI = 1.
<DN1PM>-EINKB = 1.
<DN1PM>-EINBZ = 1.
<DN1PM>-GSCHL = 1.

ENDLOOP.

LOOP AT IT_DN1PM INTO WA_DN1PM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DN1PM-NNAME, sy-vline,
  WA_DN1PM-VNAME, sy-vline,
  WA_DN1PM-PNAME, sy-vline,
  WA_DN1PM-TITEL, sy-vline,
  WA_DN1PM-GBDAT, sy-vline,
  WA_DN1PM-FALAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DN1PM 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_DN1PM 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_DN1PM INTO WA_DN1PM.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DN1PM-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DN1PM-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DN1PM-ORGFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DN1PM-ORGFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANFOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DN1PM-ANFOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DN1PM-ANFOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DIAPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DN1PM-DIAPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DN1PM-DIAPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DN1PM-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DN1PM-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR_LOW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DN1PM-FALNR_LOW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DN1PM-FALNR_LOW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR_HIGH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DN1PM-FALNR_HIGH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DN1PM-FALNR_HIGH.
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_DN1PM_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
EINKB TYPE STRING,
EINBZ TYPE STRING,
GSCHL TYPE STRING,
NNAME TYPE STRING,
VNAME TYPE STRING,
PNAME TYPE STRING,
TITEL TYPE STRING,
GBDAT TYPE STRING,
FALAR TYPE STRING,
LFDNR TYPE STRING,
LFDBEW TYPE STRING,
ORGFA TYPE STRING,
ORGNA TYPE STRING,
HIERA TYPE STRING,
ANFOE TYPE STRING,
DKAT1 TYPE STRING,
DKEY1 TYPE STRING,
DKAT2 TYPE STRING,
DKEY2 TYPE STRING,
DKAT_REF TYPE STRING,
DKEY_REF TYPE STRING,
DITXT TYPE STRING,
DILTX TYPE STRING,
DIADT TYPE STRING,
DIAZT TYPE STRING,
DIAPE TYPE STRING,
KATID TYPE STRING,
KATKB TYPE STRING,
KATTX TYPE STRING,
SPRAS TYPE STRING,
DATVO TYPE STRING,
DATBI TYPE STRING,
XWOCH TYPE STRING,
XMONA TYPE STRING,
XJAHR TYPE STRING,
XFREI TYPE STRING,
XPFLL TYPE STRING,
XDOCU TYPE STRING,
XDIAG TYPE STRING,
XNOTI TYPE STRING,
XPFLK TYPE STRING,
XAKTE TYPE STRING,
XANFO TYPE STRING,
XAUFR TYPE STRING,
STAT_ALL TYPE STRING,
FALNR_LOW TYPE STRING,
FZIFF_LOW TYPE STRING,
FALNR_HIGH TYPE STRING,
EINRI_UEB TYPE STRING,
UNFNR_M TYPE STRING,
IC_FMORE TYPE STRING,
IC_FOPTI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DN1PM_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_DN1PM_STR-MANDT sy-vline 
WA_DN1PM_STR-EINRI sy-vline 
WA_DN1PM_STR-EINKB sy-vline 
WA_DN1PM_STR-EINBZ sy-vline 
WA_DN1PM_STR-GSCHL sy-vline 
WA_DN1PM_STR-NNAME sy-vline 
WA_DN1PM_STR-VNAME sy-vline 
WA_DN1PM_STR-PNAME sy-vline 
WA_DN1PM_STR-TITEL sy-vline 
WA_DN1PM_STR-GBDAT sy-vline 
WA_DN1PM_STR-FALAR sy-vline 
WA_DN1PM_STR-LFDNR sy-vline 
WA_DN1PM_STR-LFDBEW sy-vline 
WA_DN1PM_STR-ORGFA sy-vline 
WA_DN1PM_STR-ORGNA sy-vline 
WA_DN1PM_STR-HIERA sy-vline 
WA_DN1PM_STR-ANFOE sy-vline 
WA_DN1PM_STR-DKAT1 sy-vline 
WA_DN1PM_STR-DKEY1 sy-vline 
WA_DN1PM_STR-DKAT2 sy-vline 
WA_DN1PM_STR-DKEY2 sy-vline 
WA_DN1PM_STR-DKAT_REF sy-vline 
WA_DN1PM_STR-DKEY_REF sy-vline 
WA_DN1PM_STR-DITXT sy-vline 
WA_DN1PM_STR-DILTX sy-vline 
WA_DN1PM_STR-DIADT sy-vline 
WA_DN1PM_STR-DIAZT sy-vline 
WA_DN1PM_STR-DIAPE sy-vline 
WA_DN1PM_STR-KATID sy-vline 
WA_DN1PM_STR-KATKB sy-vline 
WA_DN1PM_STR-KATTX sy-vline 
WA_DN1PM_STR-SPRAS sy-vline 
WA_DN1PM_STR-DATVO sy-vline 
WA_DN1PM_STR-DATBI sy-vline 
WA_DN1PM_STR-XWOCH sy-vline 
WA_DN1PM_STR-XMONA sy-vline 
WA_DN1PM_STR-XJAHR sy-vline 
WA_DN1PM_STR-XFREI sy-vline 
WA_DN1PM_STR-XPFLL sy-vline 
WA_DN1PM_STR-XDOCU sy-vline 
WA_DN1PM_STR-XDIAG sy-vline 
WA_DN1PM_STR-XNOTI sy-vline 
WA_DN1PM_STR-XPFLK sy-vline 
WA_DN1PM_STR-XAKTE sy-vline 
WA_DN1PM_STR-XANFO sy-vline 
WA_DN1PM_STR-XAUFR sy-vline 
WA_DN1PM_STR-STAT_ALL sy-vline 
WA_DN1PM_STR-FALNR_LOW sy-vline 
WA_DN1PM_STR-FZIFF_LOW sy-vline 
WA_DN1PM_STR-FALNR_HIGH sy-vline 
WA_DN1PM_STR-EINRI_UEB sy-vline 
WA_DN1PM_STR-UNFNR_M sy-vline 
WA_DN1PM_STR-IC_FMORE sy-vline 
WA_DN1PM_STR-IC_FOPTI sy-vline      INTO ld_text SEPARATED BY SPACE.

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