ABAP Select data from SAP table IDCMLHU_13POST_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDCMLHU_13POST_ALV 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_13POST_ALV. 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_13POST_ALV 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_13POST_ALV TYPE STANDARD TABLE OF IDCMLHU_13POST_ALV,
      WA_IDCMLHU_13POST_ALV TYPE IDCMLHU_13POST_ALV,
      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_13POST_ALV> TYPE IDCMLHU_13POST_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IDCMLHU_13POST_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IDCMLHU_13POST_ALV
  INTO TABLE IT_IDCMLHU_13POST_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCMLHU_13POST_ALV
*  INTO TABLE @DATA(IT_IDCMLHU_13POST_ALV2).
*--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_13POST_ALV INDEX 1 INTO DATA(WA_IDCMLHU_13POST_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IDCMLHU_13POST_ALV ASSIGNING <IDCMLHU_13POST_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCMLHU_13POST_ALV>-RUNNO = 1.
<IDCMLHU_13POST_ALV>-PARTNR = 1.
<IDCMLHU_13POST_ALV>-RANL = 1.
<IDCMLHU_13POST_ALV>-BELNR = 1.
<IDCMLHU_13POST_ALV>-GJAHR = 1.

ENDLOOP.

LOOP AT IT_IDCMLHU_13POST_ALV INTO WA_IDCMLHU_13POST_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCMLHU_13POST_ALV-BUZEI, sy-vline,
  WA_IDCMLHU_13POST_ALV-LINNO, sy-vline,
  WA_IDCMLHU_13POST_ALV-GSART, sy-vline,
  WA_IDCMLHU_13POST_ALV-RREFKONT, sy-vline,
  WA_IDCMLHU_13POST_ALV-SSTATI, sy-vline,
  WA_IDCMLHU_13POST_ALV-SSONDER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCMLHU_13POST_ALV 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_13POST_ALV 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_13POST_ALV INTO WA_IDCMLHU_13POST_ALV.


*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 PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-PARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNRX
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-BELNRX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-BELNRX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHRX
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-GJAHRX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-GJAHRX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-HKONT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-HKONT1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-HKONT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-HKONT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RBELKPFD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-RBELKPFD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-RBELKPFD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_13POST_ALV-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_13POST_ALV-KURSF.
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_13POST_ALV_STR, 
RUNNO TYPE STRING,
PARTNR TYPE STRING,
RANL TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
LINNO TYPE STRING,
GSART TYPE STRING,
RREFKONT TYPE STRING,
SSTATI TYPE STRING,
SSONDER TYPE STRING,
SBEWART TYPE STRING,
BUDAT TYPE STRING,
WAERS TYPE STRING,
BLART TYPE STRING,
BELNRX TYPE STRING,
GJAHRX TYPE STRING,
WRBTR TYPE STRING,
BSCHL1 TYPE STRING,
HKONT1 TYPE STRING,
BSCHL2 TYPE STRING,
HKONT2 TYPE STRING,
SBEWA TYPE STRING,
RBELKPFD TYPE STRING,
NETDT TYPE STRING,
PTYPE TYPE STRING,
REASON TYPE STRING,
MSGTX TYPE STRING,
PROC1 TYPE STRING,
DMBTR TYPE STRING,
KURSF TYPE STRING,
PWSWL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCMLHU_13POST_ALV_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_13POST_ALV_STR-RUNNO sy-vline 
WA_IDCMLHU_13POST_ALV_STR-PARTNR sy-vline 
WA_IDCMLHU_13POST_ALV_STR-RANL sy-vline 
WA_IDCMLHU_13POST_ALV_STR-BELNR sy-vline 
WA_IDCMLHU_13POST_ALV_STR-GJAHR sy-vline 
WA_IDCMLHU_13POST_ALV_STR-BUZEI sy-vline 
WA_IDCMLHU_13POST_ALV_STR-LINNO sy-vline 
WA_IDCMLHU_13POST_ALV_STR-GSART sy-vline 
WA_IDCMLHU_13POST_ALV_STR-RREFKONT sy-vline 
WA_IDCMLHU_13POST_ALV_STR-SSTATI sy-vline 
WA_IDCMLHU_13POST_ALV_STR-SSONDER sy-vline 
WA_IDCMLHU_13POST_ALV_STR-SBEWART sy-vline 
WA_IDCMLHU_13POST_ALV_STR-BUDAT sy-vline 
WA_IDCMLHU_13POST_ALV_STR-WAERS sy-vline 
WA_IDCMLHU_13POST_ALV_STR-BLART sy-vline 
WA_IDCMLHU_13POST_ALV_STR-BELNRX sy-vline 
WA_IDCMLHU_13POST_ALV_STR-GJAHRX sy-vline 
WA_IDCMLHU_13POST_ALV_STR-WRBTR sy-vline 
WA_IDCMLHU_13POST_ALV_STR-BSCHL1 sy-vline 
WA_IDCMLHU_13POST_ALV_STR-HKONT1 sy-vline 
WA_IDCMLHU_13POST_ALV_STR-BSCHL2 sy-vline 
WA_IDCMLHU_13POST_ALV_STR-HKONT2 sy-vline 
WA_IDCMLHU_13POST_ALV_STR-SBEWA sy-vline 
WA_IDCMLHU_13POST_ALV_STR-RBELKPFD sy-vline 
WA_IDCMLHU_13POST_ALV_STR-NETDT sy-vline 
WA_IDCMLHU_13POST_ALV_STR-PTYPE sy-vline 
WA_IDCMLHU_13POST_ALV_STR-REASON sy-vline 
WA_IDCMLHU_13POST_ALV_STR-MSGTX sy-vline 
WA_IDCMLHU_13POST_ALV_STR-PROC1 sy-vline 
WA_IDCMLHU_13POST_ALV_STR-DMBTR sy-vline 
WA_IDCMLHU_13POST_ALV_STR-KURSF sy-vline 
WA_IDCMLHU_13POST_ALV_STR-PWSWL sy-vline      INTO ld_text SEPARATED BY SPACE.

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