ABAP Select data from SAP table /SAPDII/INC_CVLC23 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPDII/INC_CVLC23 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 /SAPDII/INC_CVLC23. 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 /SAPDII/INC_CVLC23 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_/SAPDII/INC_CVLC23 TYPE STANDARD TABLE OF /SAPDII/INC_CVLC23,
      WA_/SAPDII/INC_CVLC23 TYPE /SAPDII/INC_CVLC23,
      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: </SAPDII/INC_CVLC23> TYPE /SAPDII/INC_CVLC23.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPDII/INC_CVLC23.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPDII/INC_CVLC23
  INTO TABLE IT_/SAPDII/INC_CVLC23.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPDII/INC_CVLC23
*  INTO TABLE @DATA(IT_/SAPDII/INC_CVLC232).
*--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_/SAPDII/INC_CVLC23 INDEX 1 INTO DATA(WA_/SAPDII/INC_CVLC232).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPDII/INC_CVLC23 ASSIGNING </SAPDII/INC_CVLC23>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPDII/INC_CVLC23>-MANDT = 1.
</SAPDII/INC_CVLC23>-ROLE = 1.
</SAPDII/INC_CVLC23>-WERKS = 1.
</SAPDII/INC_CVLC23>-VKORG = 1.
</SAPDII/INC_CVLC23>-VTWEG = 1.

ENDLOOP.

LOOP AT IT_/SAPDII/INC_CVLC23 INTO WA_/SAPDII/INC_CVLC23.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPDII/INC_CVLC23-SPART, sy-vline,
  WA_/SAPDII/INC_CVLC23-AUART, sy-vline,
  WA_/SAPDII/INC_CVLC23-KUNNR, sy-vline,
  WA_/SAPDII/INC_CVLC23-KUNWE, sy-vline,
  WA_/SAPDII/INC_CVLC23-KUNRG, sy-vline,
  WA_/SAPDII/INC_CVLC23-EKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPDII/INC_CVLC23 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_/SAPDII/INC_CVLC23 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_/SAPDII/INC_CVLC23 INTO WA_/SAPDII/INC_CVLC23.


*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_/SAPDII/INC_CVLC23_STR, 
MANDT TYPE STRING,
ROLE TYPE STRING,
WERKS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
AUART TYPE STRING,
KUNNR TYPE STRING,
KUNWE TYPE STRING,
KUNRG TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BSART TYPE STRING,
VHSAR TYPE STRING,
VHORD TYPE STRING,
KALSM TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPDII/INC_CVLC23_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_/SAPDII/INC_CVLC23_STR-MANDT sy-vline 
WA_/SAPDII/INC_CVLC23_STR-ROLE sy-vline 
WA_/SAPDII/INC_CVLC23_STR-WERKS sy-vline 
WA_/SAPDII/INC_CVLC23_STR-VKORG sy-vline 
WA_/SAPDII/INC_CVLC23_STR-VTWEG sy-vline 
WA_/SAPDII/INC_CVLC23_STR-SPART sy-vline 
WA_/SAPDII/INC_CVLC23_STR-AUART sy-vline 
WA_/SAPDII/INC_CVLC23_STR-KUNNR sy-vline 
WA_/SAPDII/INC_CVLC23_STR-KUNWE sy-vline 
WA_/SAPDII/INC_CVLC23_STR-KUNRG sy-vline 
WA_/SAPDII/INC_CVLC23_STR-EKORG sy-vline 
WA_/SAPDII/INC_CVLC23_STR-EKGRP sy-vline 
WA_/SAPDII/INC_CVLC23_STR-BSART sy-vline 
WA_/SAPDII/INC_CVLC23_STR-VHSAR sy-vline 
WA_/SAPDII/INC_CVLC23_STR-VHORD sy-vline 
WA_/SAPDII/INC_CVLC23_STR-KALSM sy-vline 
WA_/SAPDII/INC_CVLC23_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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