ABAP Select data from SAP table V_DIDCN_GA_ANLKL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_DIDCN_GA_ANLKL
*  INTO TABLE @DATA(IT_V_DIDCN_GA_ANLKL2).
*--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_V_DIDCN_GA_ANLKL INDEX 1 INTO DATA(WA_V_DIDCN_GA_ANLKL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_DIDCN_GA_ANLKL>-MANDT = 1.
<V_DIDCN_GA_ANLKL>-ANLKL = 1.
<V_DIDCN_GA_ANLKL>-SPRAS = 1.
<V_DIDCN_GA_ANLKL>-KTOPL = 1.
<V_DIDCN_GA_ANLKL>-KTOGR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_DIDCN_GA_ANLKL-AFABE, sy-vline,
  WA_V_DIDCN_GA_ANLKL-KTANSW, sy-vline,
  WA_V_DIDCN_GA_ANLKL-KTNAFB, sy-vline,
  WA_V_DIDCN_GA_ANLKL-KTAUNB, sy-vline,
  WA_V_DIDCN_GA_ANLKL-TXK50, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_V_DIDCN_GA_ANLKL 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_V_DIDCN_GA_ANLKL 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_V_DIDCN_GA_ANLKL INTO WA_V_DIDCN_GA_ANLKL.


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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_V_DIDCN_GA_ANLKL-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_DIDCN_GA_ANLKL-SPRAS.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field KTAUNB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_DIDCN_GA_ANLKL-KTAUNB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_DIDCN_GA_ANLKL-KTAUNB.
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_V_DIDCN_GA_ANLKL_STR, 
MANDT TYPE STRING,
ANLKL TYPE STRING,
SPRAS TYPE STRING,
KTOPL TYPE STRING,
KTOGR TYPE STRING,
AFABE TYPE STRING,
KTANSW TYPE STRING,
KTNAFB TYPE STRING,
KTAUNB TYPE STRING,
TXK50 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_DIDCN_GA_ANLKL_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_V_DIDCN_GA_ANLKL_STR-MANDT sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-ANLKL sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-SPRAS sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-KTOPL sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-KTOGR sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-AFABE sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-KTANSW sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-KTNAFB sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-KTAUNB sy-vline 
WA_V_DIDCN_GA_ANLKL_STR-TXK50 sy-vline      INTO ld_text SEPARATED BY SPACE.

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