ABAP Select data from SAP table /MDG/_S_0G_PP_ACCCCDET into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MDG/_S_0G_PP_ACCCCDET 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 /MDG/_S_0G_PP_ACCCCDET. 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 /MDG/_S_0G_PP_ACCCCDET 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_/MDG/_S_0G_PP_ACCCCDET TYPE STANDARD TABLE OF /MDG/_S_0G_PP_ACCCCDET,
      WA_/MDG/_S_0G_PP_ACCCCDET TYPE /MDG/_S_0G_PP_ACCCCDET,
      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: </MDG/_S_0G_PP_ACCCCDET> TYPE /MDG/_S_0G_PP_ACCCCDET.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/MDG/_S_0G_PP_ACCCCDET.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MDG/_S_0G_PP_ACCCCDET
  INTO TABLE IT_/MDG/_S_0G_PP_ACCCCDET.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MDG/_S_0G_PP_ACCCCDET
*  INTO TABLE @DATA(IT_/MDG/_S_0G_PP_ACCCCDET2).
*--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_/MDG/_S_0G_PP_ACCCCDET INDEX 1 INTO DATA(WA_/MDG/_S_0G_PP_ACCCCDET2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MDG/_S_0G_PP_ACCCCDET ASSIGNING </MDG/_S_0G_PP_ACCCCDET>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MDG/_S_0G_PP_ACCCCDET>-COA = 1.
</MDG/_S_0G_PP_ACCCCDET>-ACCOUNT = 1.
</MDG/_S_0G_PP_ACCCCDET>-COMPCODE = 1.
</MDG/_S_0G_PP_ACCCCDET>-ACCALTACC = 1.
</MDG/_S_0G_PP_ACCCCDET>-ACCAUTHGP = 1.

ENDLOOP.

LOOP AT IT_/MDG/_S_0G_PP_ACCCCDET INTO WA_/MDG/_S_0G_PP_ACCCCDET.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MDG/_S_0G_PP_ACCCCDET-ACCAUTPOS, sy-vline,
  WA_/MDG/_S_0G_PP_ACCCCDET-ACCBALLC, sy-vline,
  WA_/MDG/_S_0G_PP_ACCCCDET-ACCBKACC, sy-vline,
  WA_/MDG/_S_0G_PP_ACCCCDET-ACCBUSAB, sy-vline,
  WA_/MDG/_S_0G_PP_ACCCCDET-ACCCASHFL, sy-vline,
  WA_/MDG/_S_0G_PP_ACCCCDET-ACCCBLPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MDG/_S_0G_PP_ACCCCDET 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_/MDG/_S_0G_PP_ACCCCDET 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_/MDG/_S_0G_PP_ACCCCDET INTO WA_/MDG/_S_0G_PP_ACCCCDET.


*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 ACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_0G_PP_ACCCCDET-ACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_0G_PP_ACCCCDET-ACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCALTACC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_0G_PP_ACCCCDET-ACCALTACC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_0G_PP_ACCCCDET-ACCALTACC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIS, internal->external for field ACCFIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_0G_PP_ACCCCDET-ACCFIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_0G_PP_ACCCCDET-ACCFIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field USMD_ENT_CHNG_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_0G_PP_ACCCCDET-USMD_ENT_CHNG_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_0G_PP_ACCCCDET-USMD_ENT_CHNG_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field USMD_ENT_CRTD_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_0G_PP_ACCCCDET-USMD_ENT_CRTD_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_0G_PP_ACCCCDET-USMD_ENT_CRTD_AT.
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_/MDG/_S_0G_PP_ACCCCDET_STR, 
COA TYPE STRING,
ACCOUNT TYPE STRING,
COMPCODE TYPE STRING,
ACCALTACC TYPE STRING,
ACCAUTHGP TYPE STRING,
ACCAUTPOS TYPE STRING,
ACCBALLC TYPE STRING,
ACCBKACC TYPE STRING,
ACCBUSAB TYPE STRING,
ACCCASHFL TYPE STRING,
ACCCBLPOS TYPE STRING,
ACCCDEL TYPE STRING,
ACCEXCHRD TYPE STRING,
ACCFIPOS TYPE STRING,
ACCFSTGRP TYPE STRING,
ACCHOUSBK TYPE STRING,
ACCICFREQ TYPE STRING,
ACCICIND TYPE STRING,
ACCINFKEY TYPE STRING,
ACCLIDISP TYPE STRING,
ACCOPNITM TYPE STRING,
ACCPLLEV TYPE STRING,
ACCRECIND TYPE STRING,
ACCSRTKEY TYPE STRING,
ACCTAXCAT TYPE STRING,
ACCTOLGRP TYPE STRING,
ACCTXCOPT TYPE STRING,
ACCVALGRP TYPE STRING,
ACCWMETH TYPE STRING,
ACCXLGCLR TYPE STRING,
ACCXMITK TYPE STRING,
ACCXNKON TYPE STRING,
CURRACC TYPE STRING,
USMD_ENT_CHNG_AT TYPE STRING,
USMD_ENT_CHNG_BY TYPE STRING,
USMD_ENT_CRTD_AT TYPE STRING,
USMD_ENT_CRTD_BY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MDG/_S_0G_PP_ACCCCDET_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_/MDG/_S_0G_PP_ACCCCDET_STR-COA sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCOUNT sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-COMPCODE sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCALTACC sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCAUTHGP sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCAUTPOS sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCBALLC sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCBKACC sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCBUSAB sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCCASHFL sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCCBLPOS sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCCDEL sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCEXCHRD sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCFIPOS sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCFSTGRP sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCHOUSBK sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCICFREQ sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCICIND sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCINFKEY sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCLIDISP sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCOPNITM sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCPLLEV sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCRECIND sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCSRTKEY sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCTAXCAT sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCTOLGRP sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCTXCOPT sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCVALGRP sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCWMETH sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCXLGCLR sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCXMITK sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-ACCXNKON sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-CURRACC sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-USMD_ENT_CHNG_AT sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-USMD_ENT_CHNG_BY sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-USMD_ENT_CRTD_AT sy-vline 
WA_/MDG/_S_0G_PP_ACCCCDET_STR-USMD_ENT_CRTD_BY sy-vline      INTO ld_text SEPARATED BY SPACE.

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