ABAP Select data from SAP table HCMFAB_S_FIELD_MDATA_INBOX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMFAB_S_FIELD_MDATA_INBOX
*  INTO TABLE @DATA(IT_HCMFAB_S_FIELD_MDATA_INBOX2).
*--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_HCMFAB_S_FIELD_MDATA_INBOX INDEX 1 INTO DATA(WA_HCMFAB_S_FIELD_MDATA_INBOX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMFAB_S_FIELD_MDATA_INBOX>-FIELD_NAME = 1.
<HCMFAB_S_FIELD_MDATA_INBOX>-FIELD_LABEL = 1.
<HCMFAB_S_FIELD_MDATA_INBOX>-FIELD_SEQUENCE = 1.
<HCMFAB_S_FIELD_MDATA_INBOX>-FIELD_TYPEKIND = 1.
<HCMFAB_S_FIELD_MDATA_INBOX>-FIELD_LENGTH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HCMFAB_S_FIELD_MDATA_INBOX-FIELD_VALUE, sy-vline,
  WA_HCMFAB_S_FIELD_MDATA_INBOX-RECORDINDEX, sy-vline,
  WA_HCMFAB_S_FIELD_MDATA_INBOX-FIELD_HAS_VALUE_HELP, sy-vline,
  WA_HCMFAB_S_FIELD_MDATA_INBOX-FIELD_CONTROL_TYPE, sy-vline,
  WA_HCMFAB_S_FIELD_MDATA_INBOX-MANDATORY, sy-vline,
  WA_HCMFAB_S_FIELD_MDATA_INBOX-READONLY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMFAB_S_FIELD_MDATA_INBOX 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_HCMFAB_S_FIELD_MDATA_INBOX 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_HCMFAB_S_FIELD_MDATA_INBOX INTO WA_HCMFAB_S_FIELD_MDATA_INBOX.


*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_HCMFAB_S_FIELD_MDATA_INBOX_STR, 
FIELD_NAME TYPE STRING,
FIELD_LABEL TYPE STRING,
FIELD_SEQUENCE TYPE STRING,
FIELD_TYPEKIND TYPE STRING,
FIELD_LENGTH TYPE STRING,
FIELD_VALUE TYPE STRING,
RECORDINDEX TYPE STRING,
FIELD_HAS_VALUE_HELP TYPE STRING,
FIELD_CONTROL_TYPE TYPE STRING,
MANDATORY TYPE STRING,
READONLY TYPE STRING,
HIDDEN TYPE STRING,
GROUP_ID TYPE STRING,
GROUP_HEADER TYPE STRING,
GROUP_SEQUENCE TYPE STRING,
GROUP_FIELD_SEQUENCE TYPE STRING,
FIELD_CONTAINER TYPE STRING,
IS_START_OBJECT TYPE STRING,
FORM_SCENARIO TYPE STRING,
FORM_SCENARIO_STAGE TYPE STRING,
FORM_SCENARIO_VERSION TYPE STRING,
PROCESS_ID TYPE STRING,
VALUE_HELP_PARENT_NAME TYPE STRING,
PROCESS_EVENT TYPE STRING,
IS_BUTTON TYPE STRING,
IS_BUTTON_ENABLED TYPE STRING,
IS_BUTTON_VISIBLE TYPE STRING,
WORKITEMID TYPE STRING,
FIELD_CONTAINER_ID TYPE STRING,
FIELD_CONTAINER_SEQ TYPE STRING,
FIELD_CONTAINER_TITLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMFAB_S_FIELD_MDATA_INBOX_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_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_NAME sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_LABEL sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_SEQUENCE sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_TYPEKIND sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_LENGTH sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_VALUE sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-RECORDINDEX sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_HAS_VALUE_HELP sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_CONTROL_TYPE sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-MANDATORY sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-READONLY sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-HIDDEN sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-GROUP_ID sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-GROUP_HEADER sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-GROUP_SEQUENCE sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-GROUP_FIELD_SEQUENCE sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_CONTAINER sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-IS_START_OBJECT sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FORM_SCENARIO sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FORM_SCENARIO_STAGE sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FORM_SCENARIO_VERSION sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-PROCESS_ID sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-VALUE_HELP_PARENT_NAME sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-PROCESS_EVENT sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-IS_BUTTON sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-IS_BUTTON_ENABLED sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-IS_BUTTON_VISIBLE sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-WORKITEMID sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_CONTAINER_ID sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_CONTAINER_SEQ sy-vline 
WA_HCMFAB_S_FIELD_MDATA_INBOX_STR-FIELD_CONTAINER_TITLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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