ABAP Select data from SAP table SOMGD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SOMGD
*  INTO TABLE @DATA(IT_SOMGD2).
*--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_SOMGD INDEX 1 INTO DATA(WA_SOMGD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SOMGD>-RCP_ID_TP = 1.
<SOMGD>-RCP_ID_YR = 1.
<SOMGD>-RCP_ID_NO = 1.
<SOMGD>-RCP_SND_TP = 1.
<SOMGD>-RCP_SEQ_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SOMGD-FOLTP, sy-vline,
  WA_SOMGD-FOLYR, sy-vline,
  WA_SOMGD-FOLNO, sy-vline,
  WA_SOMGD-DOCTP, sy-vline,
  WA_SOMGD-DOCYR, sy-vline,
  WA_SOMGD-DOCNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SOMGD 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_SOMGD 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_SOMGD INTO WA_SOMGD.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SOMGD_STR, 
RCP_ID_TP TYPE STRING,
RCP_ID_YR TYPE STRING,
RCP_ID_NO TYPE STRING,
RCP_SND_TP TYPE STRING,
RCP_SEQ_NO TYPE STRING,
FOLTP TYPE STRING,
FOLYR TYPE STRING,
FOLNO TYPE STRING,
DOCTP TYPE STRING,
DOCYR TYPE STRING,
DOCNO TYPE STRING,
FORTP TYPE STRING,
FORYR TYPE STRING,
FORNO TYPE STRING,
USED_BY TYPE STRING,
GEN_NOTTP TYPE STRING,
GEN_NOTYR TYPE STRING,
GEN_NOTNO TYPE STRING,
OUTBOX TYPE STRING,
ARC_FOLTP TYPE STRING,
ARC_FOLYR TYPE STRING,
ARC_FOLNO TYPE STRING,
ASYNCHRON TYPE STRING,
SENDER TYPE STRING,
NOTTP TYPE STRING,
NOTYR TYPE STRING,
NOTNO TYPE STRING,
REC_OF_ANS TYPE STRING,
SNDDR TYPE STRING,
SNDEX TYPE STRING,
SNDCP TYPE STRING,
SNDBC TYPE STRING,
FORFB TYPE STRING,
PRIFB TYPE STRING,
SNDPRI TYPE STRING,
ACALL TYPE STRING,
ACONE TYPE STRING,
OBJRR TYPE STRING,
MAILSTATUS TYPE STRING,
DELIVER TYPE STRING,
NOT_DELI TYPE STRING,
READ_NOTIF TYPE STRING,
RESEND TYPE STRING,
OBJRN TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SOMGD_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_SOMGD_STR-RCP_ID_TP sy-vline 
WA_SOMGD_STR-RCP_ID_YR sy-vline 
WA_SOMGD_STR-RCP_ID_NO sy-vline 
WA_SOMGD_STR-RCP_SND_TP sy-vline 
WA_SOMGD_STR-RCP_SEQ_NO sy-vline 
WA_SOMGD_STR-FOLTP sy-vline 
WA_SOMGD_STR-FOLYR sy-vline 
WA_SOMGD_STR-FOLNO sy-vline 
WA_SOMGD_STR-DOCTP sy-vline 
WA_SOMGD_STR-DOCYR sy-vline 
WA_SOMGD_STR-DOCNO sy-vline 
WA_SOMGD_STR-FORTP sy-vline 
WA_SOMGD_STR-FORYR sy-vline 
WA_SOMGD_STR-FORNO sy-vline 
WA_SOMGD_STR-USED_BY sy-vline 
WA_SOMGD_STR-GEN_NOTTP sy-vline 
WA_SOMGD_STR-GEN_NOTYR sy-vline 
WA_SOMGD_STR-GEN_NOTNO sy-vline 
WA_SOMGD_STR-OUTBOX sy-vline 
WA_SOMGD_STR-ARC_FOLTP sy-vline 
WA_SOMGD_STR-ARC_FOLYR sy-vline 
WA_SOMGD_STR-ARC_FOLNO sy-vline 
WA_SOMGD_STR-ASYNCHRON sy-vline 
WA_SOMGD_STR-SENDER sy-vline 
WA_SOMGD_STR-NOTTP sy-vline 
WA_SOMGD_STR-NOTYR sy-vline 
WA_SOMGD_STR-NOTNO sy-vline 
WA_SOMGD_STR-REC_OF_ANS sy-vline 
WA_SOMGD_STR-SNDDR sy-vline 
WA_SOMGD_STR-SNDEX sy-vline 
WA_SOMGD_STR-SNDCP sy-vline 
WA_SOMGD_STR-SNDBC sy-vline 
WA_SOMGD_STR-FORFB sy-vline 
WA_SOMGD_STR-PRIFB sy-vline 
WA_SOMGD_STR-SNDPRI sy-vline 
WA_SOMGD_STR-ACALL sy-vline 
WA_SOMGD_STR-ACONE sy-vline 
WA_SOMGD_STR-OBJRR sy-vline 
WA_SOMGD_STR-MAILSTATUS sy-vline 
WA_SOMGD_STR-DELIVER sy-vline 
WA_SOMGD_STR-NOT_DELI sy-vline 
WA_SOMGD_STR-READ_NOTIF sy-vline 
WA_SOMGD_STR-RESEND sy-vline 
WA_SOMGD_STR-OBJRN sy-vline 
WA_SOMGD_STR-MSGID sy-vline 
WA_SOMGD_STR-MSGNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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