ABAP Select data from SAP table IDCMLHU_01HDX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDCMLHU_01HDX 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 IDCMLHU_01HDX. 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 IDCMLHU_01HDX 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_IDCMLHU_01HDX TYPE STANDARD TABLE OF IDCMLHU_01HDX,
      WA_IDCMLHU_01HDX TYPE IDCMLHU_01HDX,
      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: <IDCMLHU_01HDX> TYPE IDCMLHU_01HDX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IDCMLHU_01HDX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IDCMLHU_01HDX
  INTO TABLE IT_IDCMLHU_01HDX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCMLHU_01HDX
*  INTO TABLE @DATA(IT_IDCMLHU_01HDX2).
*--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_IDCMLHU_01HDX INDEX 1 INTO DATA(WA_IDCMLHU_01HDX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IDCMLHU_01HDX ASSIGNING <IDCMLHU_01HDX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCMLHU_01HDX>-BUKRS = 1.
<IDCMLHU_01HDX>-RANL = 1.
<IDCMLHU_01HDX>-ERROR = 1.
<IDCMLHU_01HDX>-LOAN_STS = 1.
<IDCMLHU_01HDX>-BEF_COMMITMENT = 1.

ENDLOOP.

LOOP AT IT_IDCMLHU_01HDX INTO WA_IDCMLHU_01HDX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCMLHU_01HDX-RREFKONT, sy-vline,
  WA_IDCMLHU_01HDX-SANTWHR, sy-vline,
  WA_IDCMLHU_01HDX-DELFZ, sy-vline,
  WA_IDCMLHU_01HDX-DANGAM, sy-vline,
  WA_IDCMLHU_01HDX-DVERTRAM, sy-vline,
  WA_IDCMLHU_01HDX-DBLFZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCMLHU_01HDX 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_IDCMLHU_01HDX 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_IDCMLHU_01HDX INTO WA_IDCMLHU_01HDX.


*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 RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_01HDX-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_01HDX-RANL.
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_IDCMLHU_01HDX_STR, 
BUKRS TYPE STRING,
RANL TYPE STRING,
ERROR TYPE STRING,
LOAN_STS TYPE STRING,
BEF_COMMITMENT TYPE STRING,
RREFKONT TYPE STRING,
SANTWHR TYPE STRING,
DELFZ TYPE STRING,
DANGAM TYPE STRING,
DVERTRAM TYPE STRING,
DBLFZ TYPE STRING,
SSTATI TYPE STRING,
SANLF TYPE STRING,
GSART TYPE STRING,
MESSAGE TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGTY TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCMLHU_01HDX_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_IDCMLHU_01HDX_STR-BUKRS sy-vline 
WA_IDCMLHU_01HDX_STR-RANL sy-vline 
WA_IDCMLHU_01HDX_STR-ERROR sy-vline 
WA_IDCMLHU_01HDX_STR-LOAN_STS sy-vline 
WA_IDCMLHU_01HDX_STR-BEF_COMMITMENT sy-vline 
WA_IDCMLHU_01HDX_STR-RREFKONT sy-vline 
WA_IDCMLHU_01HDX_STR-SANTWHR sy-vline 
WA_IDCMLHU_01HDX_STR-DELFZ sy-vline 
WA_IDCMLHU_01HDX_STR-DANGAM sy-vline 
WA_IDCMLHU_01HDX_STR-DVERTRAM sy-vline 
WA_IDCMLHU_01HDX_STR-DBLFZ sy-vline 
WA_IDCMLHU_01HDX_STR-SSTATI sy-vline 
WA_IDCMLHU_01HDX_STR-SANLF sy-vline 
WA_IDCMLHU_01HDX_STR-GSART sy-vline 
WA_IDCMLHU_01HDX_STR-MESSAGE sy-vline 
WA_IDCMLHU_01HDX_STR-MSGID sy-vline 
WA_IDCMLHU_01HDX_STR-MSGNO sy-vline 
WA_IDCMLHU_01HDX_STR-MSGTY sy-vline 
WA_IDCMLHU_01HDX_STR-MSGV1 sy-vline 
WA_IDCMLHU_01HDX_STR-MSGV2 sy-vline 
WA_IDCMLHU_01HDX_STR-MSGV3 sy-vline 
WA_IDCMLHU_01HDX_STR-MSGV4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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