ABAP Select data from SAP table FMHBH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMHBH
*  INTO TABLE @DATA(IT_FMHBH2).
*--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_FMHBH INDEX 1 INTO DATA(WA_FMHBH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMHBH>-CLIENT = 1.
<FMHBH>-FM_AREA = 1.
<FMHBH>-CRTUSER = 1.
<FMHBH>-DOCNR = 1.
<FMHBH>-PROCESS_UI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMHBH-VERSION, sy-vline,
  WA_FMHBH-CRTDATE, sy-vline,
  WA_FMHBH-CRTTIME, sy-vline,
  WA_FMHBH-DOCDATE, sy-vline,
  WA_FMHBH-POSTDATE, sy-vline,
  WA_FMHBH-REASON_REV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMHBH 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_FMHBH 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_FMHBH INTO WA_FMHBH.


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

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

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

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

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMHBH-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMHBH-RCOMP.
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_FMHBH_STR, 
CLIENT TYPE STRING,
FM_AREA TYPE STRING,
CRTUSER TYPE STRING,
DOCNR TYPE STRING,
PROCESS_UI TYPE STRING,
VERSION TYPE STRING,
CRTDATE TYPE STRING,
CRTTIME TYPE STRING,
DOCDATE TYPE STRING,
POSTDATE TYPE STRING,
REASON_REV TYPE STRING,
RESPPERS TYPE STRING,
TEXT50 TYPE STRING,
TEXTNAME TYPE STRING,
LTXT_IND TYPE STRING,
LAYOUTVAR TYPE STRING,
DOCTYPE TYPE STRING,
LOGSYS TYPE STRING,
COHORT TYPE STRING,
PUBLAW TYPE STRING,
LEGIS TYPE STRING,
EXT_DOCNR TYPE STRING,
TECHORG TYPE STRING,
SUPL_FIELD TYPE STRING,
TRANSFER_AGENCY TYPE STRING,
TRANSFER_ACCOUNT TYPE STRING,
RCOMP TYPE STRING,
FMFGUS_KEY TYPE STRING,
DUMMY_BCS_DOC_EXT TYPE STRING,
PFM_FOA TYPE STRING,
PFM_SPEC TYPE STRING,
HELD_STATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMHBH_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_FMHBH_STR-CLIENT sy-vline 
WA_FMHBH_STR-FM_AREA sy-vline 
WA_FMHBH_STR-CRTUSER sy-vline 
WA_FMHBH_STR-DOCNR sy-vline 
WA_FMHBH_STR-PROCESS_UI sy-vline 
WA_FMHBH_STR-VERSION sy-vline 
WA_FMHBH_STR-CRTDATE sy-vline 
WA_FMHBH_STR-CRTTIME sy-vline 
WA_FMHBH_STR-DOCDATE sy-vline 
WA_FMHBH_STR-POSTDATE sy-vline 
WA_FMHBH_STR-REASON_REV sy-vline 
WA_FMHBH_STR-RESPPERS sy-vline 
WA_FMHBH_STR-TEXT50 sy-vline 
WA_FMHBH_STR-TEXTNAME sy-vline 
WA_FMHBH_STR-LTXT_IND sy-vline 
WA_FMHBH_STR-LAYOUTVAR sy-vline 
WA_FMHBH_STR-DOCTYPE sy-vline 
WA_FMHBH_STR-LOGSYS sy-vline 
WA_FMHBH_STR-COHORT sy-vline 
WA_FMHBH_STR-PUBLAW sy-vline 
WA_FMHBH_STR-LEGIS sy-vline 
WA_FMHBH_STR-EXT_DOCNR sy-vline 
WA_FMHBH_STR-TECHORG sy-vline 
WA_FMHBH_STR-SUPL_FIELD sy-vline 
WA_FMHBH_STR-TRANSFER_AGENCY sy-vline 
WA_FMHBH_STR-TRANSFER_ACCOUNT sy-vline 
WA_FMHBH_STR-RCOMP sy-vline 
WA_FMHBH_STR-FMFGUS_KEY sy-vline 
WA_FMHBH_STR-DUMMY_BCS_DOC_EXT sy-vline 
WA_FMHBH_STR-PFM_FOA sy-vline 
WA_FMHBH_STR-PFM_SPEC sy-vline 
WA_FMHBH_STR-HELD_STATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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