ABAP Select data from SAP table IDCFMHU_CFW_HDX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCFMHU_CFW_HDX
*  INTO TABLE @DATA(IT_IDCFMHU_CFW_HDX2).
*--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_IDCFMHU_CFW_HDX INDEX 1 INTO DATA(WA_IDCFMHU_CFW_HDX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCFMHU_CFW_HDX>-BUKRS = 1.
<IDCFMHU_CFW_HDX>-VALUATION_AREA = 1.
<IDCFMHU_CFW_HDX>-RFHA = 1.
<IDCFMHU_CFW_HDX>-DBLFZ = 1.
<IDCFMHU_CFW_HDX>-DELFZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCFMHU_CFW_HDX-RANTYP, sy-vline,
  WA_IDCFMHU_CFW_HDX-RREFKONT, sy-vline,
  WA_IDCFMHU_CFW_HDX-SFHAART, sy-vline,
  WA_IDCFMHU_CFW_HDX-SAKTIV, sy-vline,
  WA_IDCFMHU_CFW_HDX-RDEALER, sy-vline,
  WA_IDCFMHU_CFW_HDX-SFGZUSTT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCFMHU_CFW_HDX 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_IDCFMHU_CFW_HDX 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_IDCFMHU_CFW_HDX INTO WA_IDCFMHU_CFW_HDX.


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

*Conversion exit ALPHA, internal->external for field REF_RFHA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCFMHU_CFW_HDX-REF_RFHA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCFMHU_CFW_HDX-REF_RFHA.
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_IDCFMHU_CFW_HDX_STR, 
BUKRS TYPE STRING,
VALUATION_AREA TYPE STRING,
RFHA TYPE STRING,
DBLFZ TYPE STRING,
DELFZ TYPE STRING,
RANTYP TYPE STRING,
RREFKONT TYPE STRING,
SFHAART TYPE STRING,
SAKTIV TYPE STRING,
RDEALER TYPE STRING,
SFGZUSTT TYPE STRING,
SANLF TYPE STRING,
REF_RFHA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCFMHU_CFW_HDX_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_IDCFMHU_CFW_HDX_STR-BUKRS sy-vline 
WA_IDCFMHU_CFW_HDX_STR-VALUATION_AREA sy-vline 
WA_IDCFMHU_CFW_HDX_STR-RFHA sy-vline 
WA_IDCFMHU_CFW_HDX_STR-DBLFZ sy-vline 
WA_IDCFMHU_CFW_HDX_STR-DELFZ sy-vline 
WA_IDCFMHU_CFW_HDX_STR-RANTYP sy-vline 
WA_IDCFMHU_CFW_HDX_STR-RREFKONT sy-vline 
WA_IDCFMHU_CFW_HDX_STR-SFHAART sy-vline 
WA_IDCFMHU_CFW_HDX_STR-SAKTIV sy-vline 
WA_IDCFMHU_CFW_HDX_STR-RDEALER sy-vline 
WA_IDCFMHU_CFW_HDX_STR-SFGZUSTT sy-vline 
WA_IDCFMHU_CFW_HDX_STR-SANLF sy-vline 
WA_IDCFMHU_CFW_HDX_STR-REF_RFHA sy-vline      INTO ld_text SEPARATED BY SPACE.

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