ABAP Select data from SAP table VCM_T133AX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VCM_T133AX 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 VCM_T133AX. 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 VCM_T133AX 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_VCM_T133AX TYPE STANDARD TABLE OF VCM_T133AX,
      WA_VCM_T133AX TYPE VCM_T133AX,
      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: <VCM_T133AX> TYPE VCM_T133AX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VCM_T133AX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VCM_T133AX
  INTO TABLE IT_VCM_T133AX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VCM_T133AX
*  INTO TABLE @DATA(IT_VCM_T133AX2).
*--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_VCM_T133AX INDEX 1 INTO DATA(WA_VCM_T133AX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VCM_T133AX ASSIGNING <VCM_T133AX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VCM_T133AX>-MANDT = 1.
<VCM_T133AX>-BILDS = 1.
<VCM_T133AX>-AUSWG = 1.
<VCM_T133AX>-DYTXT = 1.
<VCM_T133AX>-MNTXT = 1.

ENDLOOP.

LOOP AT IT_VCM_T133AX INTO WA_VCM_T133AX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VCM_T133AX-BILDT, sy-vline,
  WA_VCM_T133AX-PROGN, sy-vline,
  WA_VCM_T133AX-DYPNO, sy-vline,
  WA_VCM_T133AX-PSTAT, sy-vline,
  WA_VCM_T133AX-GUIST, sy-vline,
  WA_VCM_T133AX-GUIFU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VCM_T133AX 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_VCM_T133AX 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_VCM_T133AX INTO WA_VCM_T133AX.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VCM_T133AX_STR, 
MANDT TYPE STRING,
BILDS TYPE STRING,
AUSWG TYPE STRING,
DYTXT TYPE STRING,
MNTXT TYPE STRING,
BILDT TYPE STRING,
PROGN TYPE STRING,
DYPNO TYPE STRING,
PSTAT TYPE STRING,
GUIST TYPE STRING,
GUIFU TYPE STRING,
TITTY TYPE STRING,
RPSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VCM_T133AX_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_VCM_T133AX_STR-MANDT sy-vline 
WA_VCM_T133AX_STR-BILDS sy-vline 
WA_VCM_T133AX_STR-AUSWG sy-vline 
WA_VCM_T133AX_STR-DYTXT sy-vline 
WA_VCM_T133AX_STR-MNTXT sy-vline 
WA_VCM_T133AX_STR-BILDT sy-vline 
WA_VCM_T133AX_STR-PROGN sy-vline 
WA_VCM_T133AX_STR-DYPNO sy-vline 
WA_VCM_T133AX_STR-PSTAT sy-vline 
WA_VCM_T133AX_STR-GUIST sy-vline 
WA_VCM_T133AX_STR-GUIFU sy-vline 
WA_VCM_T133AX_STR-TITTY sy-vline 
WA_VCM_T133AX_STR-RPSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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