ABAP Select data from SAP table /PMG/ABDGMASGEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PMG/ABDGMASGEN
*  INTO TABLE @DATA(IT_/PMG/ABDGMASGEN2).
*--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_/PMG/ABDGMASGEN INDEX 1 INTO DATA(WA_/PMG/ABDGMASGEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PMG/ABDGMASGEN>-CLIENT = 1.
</PMG/ABDGMASGEN>-SUBGEN_GD = 1.
</PMG/ABDGMASGEN>-JOURNALNO_ID = 1.
</PMG/ABDGMASGEN>-MPO_GD = 1.
</PMG/ABDGMASGEN>-GEN_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PMG/ABDGMASGEN-SUBGEN_ID, sy-vline,
  WA_/PMG/ABDGMASGEN-CURRENCY_IDDCO, sy-vline,
  WA_/PMG/ABDGMASGEN-PTCPTP_CDDCO, sy-vline,
  WA_/PMG/ABDGMASGEN-OWNSHARE_FGDCO, sy-vline,
  WA_/PMG/ABDGMASGEN-PARTNER_IDDCO, sy-vline,
  WA_/PMG/ABDGMASGEN-ADDRESSNUMBER_IDDCO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PMG/ABDGMASGEN 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_/PMG/ABDGMASGEN 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_/PMG/ABDGMASGEN INTO WA_/PMG/ABDGMASGEN.


*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 PARTNER_IDDCO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PMG/ABDGMASGEN-PARTNER_IDDCO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PMG/ABDGMASGEN-PARTNER_IDDCO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit J7ADC, internal->external for field ADDRESSNUMBER_IDDCO
CALL FUNCTION 'CONVERSION_EXIT_J7ADC_OUTPUT'
  EXPORTING
    input =                      WA_/PMG/ABDGMASGEN-ADDRESSNUMBER_IDDCO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PMG/ABDGMASGEN-ADDRESSNUMBER_IDDCO.
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_/PMG/ABDGMASGEN_STR, 
CLIENT TYPE STRING,
SUBGEN_GD TYPE STRING,
JOURNALNO_ID TYPE STRING,
MPO_GD TYPE STRING,
GEN_ID TYPE STRING,
SUBGEN_ID TYPE STRING,
CURRENCY_IDDCO TYPE STRING,
PTCPTP_CDDCO TYPE STRING,
OWNSHARE_FGDCO TYPE STRING,
PARTNER_IDDCO TYPE STRING,
ADDRESSNUMBER_IDDCO TYPE STRING,
COPYCORR_FGDCO TYPE STRING,
SHAREPREM_VLDCO TYPE STRING,
SHARECLAIM_VLDCO TYPE STRING,
COINSREP_IDDCO TYPE STRING,
BITPTX_CDDCO TYPE STRING,
BITPPR_CDDCO TYPE STRING,
BITPCL_CDDCO TYPE STRING,
TEMPLNR_TTDCO TYPE STRING,
TEMPLDESCR_TTDCO TYPE STRING,
FRONTING_FGDCO TYPE STRING,
PARTICIPATION_CDDCO TYPE STRING,
CUSTOMER_PB_CIDCO TYPE STRING,
/PMG/TEMPLATE_ID TYPE STRING,
PRELGR_ID TYPE STRING,
JOURNALENDNO_ID TYPE STRING,
CANCEL_FG TYPE STRING,
CHANGEUSR_TT TYPE STRING,
CHANGE_TS TYPE STRING,
RECORDUSR_TT TYPE STRING,
RECORD_TS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PMG/ABDGMASGEN_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_/PMG/ABDGMASGEN_STR-CLIENT sy-vline 
WA_/PMG/ABDGMASGEN_STR-SUBGEN_GD sy-vline 
WA_/PMG/ABDGMASGEN_STR-JOURNALNO_ID sy-vline 
WA_/PMG/ABDGMASGEN_STR-MPO_GD sy-vline 
WA_/PMG/ABDGMASGEN_STR-GEN_ID sy-vline 
WA_/PMG/ABDGMASGEN_STR-SUBGEN_ID sy-vline 
WA_/PMG/ABDGMASGEN_STR-CURRENCY_IDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-PTCPTP_CDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-OWNSHARE_FGDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-PARTNER_IDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-ADDRESSNUMBER_IDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-COPYCORR_FGDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-SHAREPREM_VLDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-SHARECLAIM_VLDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-COINSREP_IDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-BITPTX_CDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-BITPPR_CDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-BITPCL_CDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-TEMPLNR_TTDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-TEMPLDESCR_TTDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-FRONTING_FGDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-PARTICIPATION_CDDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-CUSTOMER_PB_CIDCO sy-vline 
WA_/PMG/ABDGMASGEN_STR-/PMG/TEMPLATE_ID sy-vline 
WA_/PMG/ABDGMASGEN_STR-PRELGR_ID sy-vline 
WA_/PMG/ABDGMASGEN_STR-JOURNALENDNO_ID sy-vline 
WA_/PMG/ABDGMASGEN_STR-CANCEL_FG sy-vline 
WA_/PMG/ABDGMASGEN_STR-CHANGEUSR_TT sy-vline 
WA_/PMG/ABDGMASGEN_STR-CHANGE_TS sy-vline 
WA_/PMG/ABDGMASGEN_STR-RECORDUSR_TT sy-vline 
WA_/PMG/ABDGMASGEN_STR-RECORD_TS sy-vline      INTO ld_text SEPARATED BY SPACE.

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