ABAP Select data from SAP table VV_T512E_CHAL_AL0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VV_T512E_CHAL_AL0 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 VV_T512E_CHAL_AL0. 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 VV_T512E_CHAL_AL0 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_VV_T512E_CHAL_AL0 TYPE STANDARD TABLE OF VV_T512E_CHAL_AL0,
      WA_VV_T512E_CHAL_AL0 TYPE VV_T512E_CHAL_AL0,
      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: <VV_T512E_CHAL_AL0> TYPE VV_T512E_CHAL_AL0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VV_T512E_CHAL_AL0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VV_T512E_CHAL_AL0
  INTO TABLE IT_VV_T512E_CHAL_AL0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VV_T512E_CHAL_AL0
*  INTO TABLE @DATA(IT_VV_T512E_CHAL_AL02).
*--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_VV_T512E_CHAL_AL0 INDEX 1 INTO DATA(WA_VV_T512E_CHAL_AL02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VV_T512E_CHAL_AL0 ASSIGNING <VV_T512E_CHAL_AL0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VV_T512E_CHAL_AL0>-MANDT = 1.
<VV_T512E_CHAL_AL0>-MOLGA = 1.
<VV_T512E_CHAL_AL0>-FORML = 1.
<VV_T512E_CHAL_AL0>-LGART = 1.
<VV_T512E_CHAL_AL0>-TABNA = 1.

ENDLOOP.

LOOP AT IT_VV_T512E_CHAL_AL0 INTO WA_VV_T512E_CHAL_AL0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VV_T512E_CHAL_AL0-LFDNR, sy-vline,
  WA_VV_T512E_CHAL_AL0-WINDO, sy-vline,
  WA_VV_T512E_CHAL_AL0-GRPPE, sy-vline,
  WA_VV_T512E_CHAL_AL0-SEQNO, sy-vline,
  WA_VV_T512E_CHAL_AL0-LTYPE, sy-vline,
  WA_VV_T512E_CHAL_AL0-COLNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VV_T512E_CHAL_AL0 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_VV_T512E_CHAL_AL0 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_VV_T512E_CHAL_AL0 INTO WA_VV_T512E_CHAL_AL0.


*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_VV_T512E_CHAL_AL0_STR, 
MANDT TYPE STRING,
MOLGA TYPE STRING,
FORML TYPE STRING,
LGART TYPE STRING,
TABNA TYPE STRING,
LFDNR TYPE STRING,
WINDO TYPE STRING,
GRPPE TYPE STRING,
SEQNO TYPE STRING,
LTYPE TYPE STRING,
COLNO TYPE STRING,
SLART TYPE STRING,
RECHZ TYPE STRING,
FCONV TYPE STRING,
REGEL TYPE STRING,
SSPLT TYPE STRING,
DSPLT TYPE STRING,
DIFAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VV_T512E_CHAL_AL0_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_VV_T512E_CHAL_AL0_STR-MANDT sy-vline 
WA_VV_T512E_CHAL_AL0_STR-MOLGA sy-vline 
WA_VV_T512E_CHAL_AL0_STR-FORML sy-vline 
WA_VV_T512E_CHAL_AL0_STR-LGART sy-vline 
WA_VV_T512E_CHAL_AL0_STR-TABNA sy-vline 
WA_VV_T512E_CHAL_AL0_STR-LFDNR sy-vline 
WA_VV_T512E_CHAL_AL0_STR-WINDO sy-vline 
WA_VV_T512E_CHAL_AL0_STR-GRPPE sy-vline 
WA_VV_T512E_CHAL_AL0_STR-SEQNO sy-vline 
WA_VV_T512E_CHAL_AL0_STR-LTYPE sy-vline 
WA_VV_T512E_CHAL_AL0_STR-COLNO sy-vline 
WA_VV_T512E_CHAL_AL0_STR-SLART sy-vline 
WA_VV_T512E_CHAL_AL0_STR-RECHZ sy-vline 
WA_VV_T512E_CHAL_AL0_STR-FCONV sy-vline 
WA_VV_T512E_CHAL_AL0_STR-REGEL sy-vline 
WA_VV_T512E_CHAL_AL0_STR-SSPLT sy-vline 
WA_VV_T512E_CHAL_AL0_STR-DSPLT sy-vline 
WA_VV_T512E_CHAL_AL0_STR-DIFAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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