ABAP Select data from SAP table V_ANKP_01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_ANKP_01 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_ANKP_01. 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_ANKP_01 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_ANKP_01 TYPE STANDARD TABLE OF V_ANKP_01,
      WA_V_ANKP_01 TYPE V_ANKP_01,
      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_ANKP_01> TYPE V_ANKP_01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_ANKP_01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_ANKP_01
  INTO TABLE IT_V_ANKP_01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_ANKP_01
*  INTO TABLE @DATA(IT_V_ANKP_012).
*--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_ANKP_01 INDEX 1 INTO DATA(WA_V_ANKP_012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_ANKP_01 ASSIGNING <V_ANKP_01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_ANKP_01>-MANDT = 1.
<V_ANKP_01>-ANLKL = 1.
<V_ANKP_01>-AFAPL = 1.
<V_ANKP_01>-KTEXT = 1.
<V_ANKP_01>-FELEI = 1.

ENDLOOP.

LOOP AT IT_V_ANKP_01 INTO WA_V_ANKP_01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_ANKP_01-KTOGR, sy-vline,
  WA_V_ANKP_01-ORD41, sy-vline,
  WA_V_ANKP_01-ORD42, sy-vline,
  WA_V_ANKP_01-ORD43, sy-vline,
  WA_V_ANKP_01-ORD44, sy-vline,
  WA_V_ANKP_01-GDLGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_ANKP_01 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_ANKP_01 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_ANKP_01 INTO WA_V_ANKP_01.


*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_ANKP_01-ANLKL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ANKP_01-ANLKL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTOGR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_ANKP_01-KTOGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ANKP_01-KTOGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VMGLI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_ANKP_01-VMGLI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ANKP_01-VMGLI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANKA_KTOGR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_ANKP_01-ANKA_KTOGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ANKP_01-ANKA_KTOGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANKA_VMGLI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_ANKP_01-ANKA_VMGLI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ANKP_01-ANKA_VMGLI.
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_ANKP_01_STR, 
MANDT TYPE STRING,
ANLKL TYPE STRING,
AFAPL TYPE STRING,
KTEXT TYPE STRING,
FELEI TYPE STRING,
KTOGR TYPE STRING,
ORD41 TYPE STRING,
ORD42 TYPE STRING,
ORD43 TYPE STRING,
ORD44 TYPE STRING,
GDLGRP TYPE STRING,
VMGLI TYPE STRING,
VSART TYPE STRING,
VSIND TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
XLOEV TYPE STRING,
XSPER TYPE STRING,
VMTXT TYPE STRING,
VRSTX TYPE STRING,
INDTXT TYPE STRING,
TXK50 TYPE STRING,
TXT30 TYPE STRING,
ANKA_KTOGR TYPE STRING,
ANKA_FELEI TYPE STRING,
ANKA_VMGLI TYPE STRING,
ANKA_ORD41 TYPE STRING,
ANKA_ORD42 TYPE STRING,
ANKA_ORD43 TYPE STRING,
ANKA_ORD44 TYPE STRING,
ANKA_GDLGRP TYPE STRING,
ORDTX1 TYPE STRING,
ORDTX2 TYPE STRING,
ORDTX3 TYPE STRING,
ORDTX4 TYPE STRING,
GDLGRP_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_ANKP_01_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_ANKP_01_STR-MANDT sy-vline 
WA_V_ANKP_01_STR-ANLKL sy-vline 
WA_V_ANKP_01_STR-AFAPL sy-vline 
WA_V_ANKP_01_STR-KTEXT sy-vline 
WA_V_ANKP_01_STR-FELEI sy-vline 
WA_V_ANKP_01_STR-KTOGR sy-vline 
WA_V_ANKP_01_STR-ORD41 sy-vline 
WA_V_ANKP_01_STR-ORD42 sy-vline 
WA_V_ANKP_01_STR-ORD43 sy-vline 
WA_V_ANKP_01_STR-ORD44 sy-vline 
WA_V_ANKP_01_STR-GDLGRP sy-vline 
WA_V_ANKP_01_STR-VMGLI sy-vline 
WA_V_ANKP_01_STR-VSART sy-vline 
WA_V_ANKP_01_STR-VSIND sy-vline 
WA_V_ANKP_01_STR-ERNAM sy-vline 
WA_V_ANKP_01_STR-ERDAT sy-vline 
WA_V_ANKP_01_STR-AENAM sy-vline 
WA_V_ANKP_01_STR-AEDAT sy-vline 
WA_V_ANKP_01_STR-XLOEV sy-vline 
WA_V_ANKP_01_STR-XSPER sy-vline 
WA_V_ANKP_01_STR-VMTXT sy-vline 
WA_V_ANKP_01_STR-VRSTX sy-vline 
WA_V_ANKP_01_STR-INDTXT sy-vline 
WA_V_ANKP_01_STR-TXK50 sy-vline 
WA_V_ANKP_01_STR-TXT30 sy-vline 
WA_V_ANKP_01_STR-ANKA_KTOGR sy-vline 
WA_V_ANKP_01_STR-ANKA_FELEI sy-vline 
WA_V_ANKP_01_STR-ANKA_VMGLI sy-vline 
WA_V_ANKP_01_STR-ANKA_ORD41 sy-vline 
WA_V_ANKP_01_STR-ANKA_ORD42 sy-vline 
WA_V_ANKP_01_STR-ANKA_ORD43 sy-vline 
WA_V_ANKP_01_STR-ANKA_ORD44 sy-vline 
WA_V_ANKP_01_STR-ANKA_GDLGRP sy-vline 
WA_V_ANKP_01_STR-ORDTX1 sy-vline 
WA_V_ANKP_01_STR-ORDTX2 sy-vline 
WA_V_ANKP_01_STR-ORDTX3 sy-vline 
WA_V_ANKP_01_STR-ORDTX4 sy-vline 
WA_V_ANKP_01_STR-GDLGRP_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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