ABAP Select data from SAP table IDCMLHU_01DOX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDCMLHU_01DOX 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_01DOX. 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_01DOX 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_01DOX TYPE STANDARD TABLE OF IDCMLHU_01DOX,
      WA_IDCMLHU_01DOX TYPE IDCMLHU_01DOX,
      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_01DOX> TYPE IDCMLHU_01DOX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IDCMLHU_01DOX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IDCMLHU_01DOX
  INTO TABLE IT_IDCMLHU_01DOX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCMLHU_01DOX
*  INTO TABLE @DATA(IT_IDCMLHU_01DOX2).
*--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_01DOX INDEX 1 INTO DATA(WA_IDCMLHU_01DOX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IDCMLHU_01DOX ASSIGNING <IDCMLHU_01DOX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCMLHU_01DOX>-BUKRS = 1.
<IDCMLHU_01DOX>-RANL = 1.
<IDCMLHU_01DOX>-BLDAT = 1.
<IDCMLHU_01DOX>-BUDAT2 = 1.
<IDCMLHU_01DOX>-WZBETR = 1.

ENDLOOP.

LOOP AT IT_IDCMLHU_01DOX INTO WA_IDCMLHU_01DOX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCMLHU_01DOX-ACCOUNT_D, sy-vline,
  WA_IDCMLHU_01DOX-ACCOUNT_C, sy-vline,
  WA_IDCMLHU_01DOX-LOAN_STS, sy-vline,
  WA_IDCMLHU_01DOX-BEF_COMMITMENT, sy-vline,
  WA_IDCMLHU_01DOX-STATUS, sy-vline,
  WA_IDCMLHU_01DOX-ERROR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCMLHU_01DOX 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_01DOX 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_01DOX INTO WA_IDCMLHU_01DOX.


*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_01DOX-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_01DOX-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT_D
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_01DOX-ACCOUNT_D
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_01DOX-ACCOUNT_D.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT_C
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_01DOX-ACCOUNT_C
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_01DOX-ACCOUNT_C.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_01DOX-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_01DOX-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_01DOX-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_01DOX-GJAHR.
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_01DOX_STR, 
BUKRS TYPE STRING,
RANL TYPE STRING,
BLDAT TYPE STRING,
BUDAT2 TYPE STRING,
WZBETR TYPE STRING,
ACCOUNT_D TYPE STRING,
ACCOUNT_C TYPE STRING,
LOAN_STS TYPE STRING,
BEF_COMMITMENT TYPE STRING,
STATUS TYPE STRING,
ERROR TYPE STRING,
BZBETR_DIF TYPE STRING,
BZBETR_ACT TYPE STRING,
BZBETR_POST TYPE STRING,
BZBETR_PRV TYPE STRING,
BZBETR_DIF_SUM TYPE STRING,
BLART TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUDAT TYPE STRING,
WWERT 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_01DOX_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_01DOX_STR-BUKRS sy-vline 
WA_IDCMLHU_01DOX_STR-RANL sy-vline 
WA_IDCMLHU_01DOX_STR-BLDAT sy-vline 
WA_IDCMLHU_01DOX_STR-BUDAT2 sy-vline 
WA_IDCMLHU_01DOX_STR-WZBETR sy-vline 
WA_IDCMLHU_01DOX_STR-ACCOUNT_D sy-vline 
WA_IDCMLHU_01DOX_STR-ACCOUNT_C sy-vline 
WA_IDCMLHU_01DOX_STR-LOAN_STS sy-vline 
WA_IDCMLHU_01DOX_STR-BEF_COMMITMENT sy-vline 
WA_IDCMLHU_01DOX_STR-STATUS sy-vline 
WA_IDCMLHU_01DOX_STR-ERROR sy-vline 
WA_IDCMLHU_01DOX_STR-BZBETR_DIF sy-vline 
WA_IDCMLHU_01DOX_STR-BZBETR_ACT sy-vline 
WA_IDCMLHU_01DOX_STR-BZBETR_POST sy-vline 
WA_IDCMLHU_01DOX_STR-BZBETR_PRV sy-vline 
WA_IDCMLHU_01DOX_STR-BZBETR_DIF_SUM sy-vline 
WA_IDCMLHU_01DOX_STR-BLART sy-vline 
WA_IDCMLHU_01DOX_STR-BELNR sy-vline 
WA_IDCMLHU_01DOX_STR-GJAHR sy-vline 
WA_IDCMLHU_01DOX_STR-BUDAT sy-vline 
WA_IDCMLHU_01DOX_STR-WWERT sy-vline 
WA_IDCMLHU_01DOX_STR-MESSAGE sy-vline 
WA_IDCMLHU_01DOX_STR-MSGID sy-vline 
WA_IDCMLHU_01DOX_STR-MSGNO sy-vline 
WA_IDCMLHU_01DOX_STR-MSGTY sy-vline 
WA_IDCMLHU_01DOX_STR-MSGV1 sy-vline 
WA_IDCMLHU_01DOX_STR-MSGV2 sy-vline 
WA_IDCMLHU_01DOX_STR-MSGV3 sy-vline 
WA_IDCMLHU_01DOX_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.