ABAP Select data from SAP table CVIS_SUPPLIER_PURCHASING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CVIS_SUPPLIER_PURCHASING
*  INTO TABLE @DATA(IT_CVIS_SUPPLIER_PURCHASING2).
*--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_CVIS_SUPPLIER_PURCHASING INDEX 1 INTO DATA(WA_CVIS_SUPPLIER_PURCHASING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CVIS_SUPPLIER_PURCHASING>-RUN_ID = 1.
<CVIS_SUPPLIER_PURCHASING>-EKORG = 1.
<CVIS_SUPPLIER_PURCHASING>-SPERM = 1.
<CVIS_SUPPLIER_PURCHASING>-LOEVM = 1.
<CVIS_SUPPLIER_PURCHASING>-LFABC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CVIS_SUPPLIER_PURCHASING-WAERS, sy-vline,
  WA_CVIS_SUPPLIER_PURCHASING-VERKF, sy-vline,
  WA_CVIS_SUPPLIER_PURCHASING-TELF1, sy-vline,
  WA_CVIS_SUPPLIER_PURCHASING-MINBW, sy-vline,
  WA_CVIS_SUPPLIER_PURCHASING-ZTERM, sy-vline,
  WA_CVIS_SUPPLIER_PURCHASING-INCO1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CVIS_SUPPLIER_PURCHASING 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_CVIS_SUPPLIER_PURCHASING 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_CVIS_SUPPLIER_PURCHASING INTO WA_CVIS_SUPPLIER_PURCHASING.


*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 ID004, internal->external for field INCO2_KEY
CALL FUNCTION 'CONVERSION_EXIT_ID004_OUTPUT'
  EXPORTING
    input =                      WA_CVIS_SUPPLIER_PURCHASING-INCO2_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CVIS_SUPPLIER_PURCHASING-INCO2_KEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ID004, internal->external for field INCO3_KEY
CALL FUNCTION 'CONVERSION_EXIT_ID004_OUTPUT'
  EXPORTING
    input =                      WA_CVIS_SUPPLIER_PURCHASING-INCO3_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CVIS_SUPPLIER_PURCHASING-INCO3_KEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ID004, internal->external for field INCO4_KEY
CALL FUNCTION 'CONVERSION_EXIT_ID004_OUTPUT'
  EXPORTING
    input =                      WA_CVIS_SUPPLIER_PURCHASING-INCO4_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CVIS_SUPPLIER_PURCHASING-INCO4_KEY.
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_CVIS_SUPPLIER_PURCHASING_STR, 
RUN_ID TYPE STRING,
EKORG TYPE STRING,
SPERM TYPE STRING,
LOEVM TYPE STRING,
LFABC TYPE STRING,
WAERS TYPE STRING,
VERKF TYPE STRING,
TELF1 TYPE STRING,
MINBW TYPE STRING,
ZTERM TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
WEBRE TYPE STRING,
KZABS TYPE STRING,
KALSK TYPE STRING,
KZAUT TYPE STRING,
EXPVZ TYPE STRING,
ZOLLA TYPE STRING,
MEPRF TYPE STRING,
EKGRP TYPE STRING,
BOLRE TYPE STRING,
UMSAE TYPE STRING,
XERSY TYPE STRING,
PLIFZ TYPE STRING,
MRPPP TYPE STRING,
LFRHY TYPE STRING,
LIBES TYPE STRING,
LIPRE TYPE STRING,
LISER TYPE STRING,
BOIND TYPE STRING,
PRFRE TYPE STRING,
NRGEW TYPE STRING,
BLIND TYPE STRING,
SKRIT TYPE STRING,
BSTAE TYPE STRING,
RDPRF TYPE STRING,
MEGRU TYPE STRING,
VENSL TYPE STRING,
BOPNR TYPE STRING,
XERSR TYPE STRING,
EIKTO TYPE STRING,
PAPRF TYPE STRING,
AGREL TYPE STRING,
XNBWY TYPE STRING,
VSBED TYPE STRING,
LEBRE TYPE STRING,
KZRET TYPE STRING,
AUBEL TYPE STRING,
VALID_PRO TYPE STRING,
HSCABS TYPE STRING,
HSCPE TYPE STRING,
HSCMIN TYPE STRING,
HSCMAX TYPE STRING,
VENDOR_RMA_REQ TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,
FSH_SC_CID TYPE STRING,
FSH_VAS_DETC TYPE STRING,
ACTIVITY_PROFIL TYPE STRING,
TRANSPORT_CHAIN TYPE STRING,
STAGING_TIME TYPE STRING,
LFM1_EEW_PS TYPE STRING,
INCO2_KEY TYPE STRING,
INCO3_KEY TYPE STRING,
INCO4_KEY TYPE STRING,
UPPRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CVIS_SUPPLIER_PURCHASING_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_CVIS_SUPPLIER_PURCHASING_STR-RUN_ID sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-EKORG sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-SPERM sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LOEVM sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LFABC sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-WAERS sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-VERKF sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-TELF1 sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-MINBW sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-ZTERM sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCO1 sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCO2 sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-WEBRE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-KZABS sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-KALSK sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-KZAUT sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-EXPVZ sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-ZOLLA sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-MEPRF sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-EKGRP sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-BOLRE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-UMSAE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-XERSY sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-PLIFZ sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-MRPPP sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LFRHY sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LIBES sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LIPRE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LISER sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-BOIND sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-PRFRE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-NRGEW sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-BLIND sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-SKRIT sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-BSTAE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-RDPRF sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-MEGRU sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-VENSL sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-BOPNR sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-XERSR sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-EIKTO sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-PAPRF sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-AGREL sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-XNBWY sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-VSBED sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LEBRE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-KZRET sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-AUBEL sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-VALID_PRO sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-HSCABS sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-HSCPE sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-HSCMIN sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-HSCMAX sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-VENDOR_RMA_REQ sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCOV sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCO2_L sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCO3_L sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-FSH_SC_CID sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-FSH_VAS_DETC sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-ACTIVITY_PROFIL sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-TRANSPORT_CHAIN sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-STAGING_TIME sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-LFM1_EEW_PS sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCO2_KEY sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCO3_KEY sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-INCO4_KEY sy-vline 
WA_CVIS_SUPPLIER_PURCHASING_STR-UPPRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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