ABAP Select data from SAP table /ACCGO/CAS_S_NS_W_SEL_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ACCGO/CAS_S_NS_W_SEL_DATA
*  INTO TABLE @DATA(IT_/ACCGO/CAS_S_NS_W_SEL_DATA2).
*--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_/ACCGO/CAS_S_NS_W_SEL_DATA INDEX 1 INTO DATA(WA_/ACCGO/CAS_S_NS_W_SEL_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ACCGO/CAS_S_NS_W_SEL_DATA>-TKONN = 1.
</ACCGO/CAS_S_NS_W_SEL_DATA>-WERKS = 1.
</ACCGO/CAS_S_NS_W_SEL_DATA>-BUKRS = 1.
</ACCGO/CAS_S_NS_W_SEL_DATA>-PRCTR = 1.
</ACCGO/CAS_S_NS_W_SEL_DATA>-EKORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ACCGO/CAS_S_NS_W_SEL_DATA-VKORG, sy-vline,
  WA_/ACCGO/CAS_S_NS_W_SEL_DATA-EKGRP, sy-vline,
  WA_/ACCGO/CAS_S_NS_W_SEL_DATA-VKGRP, sy-vline,
  WA_/ACCGO/CAS_S_NS_W_SEL_DATA-TCTYP, sy-vline,
  WA_/ACCGO/CAS_S_NS_W_SEL_DATA-MATNR, sy-vline,
  WA_/ACCGO/CAS_S_NS_W_SEL_DATA-MATKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ACCGO/CAS_S_NS_W_SEL_DATA 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_/ACCGO/CAS_S_NS_W_SEL_DATA 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_/ACCGO/CAS_S_NS_W_SEL_DATA INTO WA_/ACCGO/CAS_S_NS_W_SEL_DATA.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/CAS_S_NS_W_SEL_DATA-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/CAS_S_NS_W_SEL_DATA-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ELIFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/CAS_S_NS_W_SEL_DATA-ELIFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/CAS_S_NS_W_SEL_DATA-ELIFN.
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_/ACCGO/CAS_S_NS_W_SEL_DATA_STR, 
TKONN TYPE STRING,
WERKS TYPE STRING,
BUKRS TYPE STRING,
PRCTR TYPE STRING,
EKORG TYPE STRING,
VKORG TYPE STRING,
EKGRP TYPE STRING,
VKGRP TYPE STRING,
TCTYP TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
KUNNR TYPE STRING,
ELIFN TYPE STRING,
PSTAT TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
CONTRACT_TYPE TYPE STRING,
EXACT_MATCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ACCGO/CAS_S_NS_W_SEL_DATA_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_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-TKONN sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-WERKS sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-BUKRS sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-PRCTR sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-EKORG sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-VKORG sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-EKGRP sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-VKGRP sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-TCTYP sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-MATNR sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-MATKL sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-KUNNR sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-ELIFN sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-PSTAT sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-DATE_FROM sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-DATE_TO sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-CONTRACT_TYPE sy-vline 
WA_/ACCGO/CAS_S_NS_W_SEL_DATA_STR-EXACT_MATCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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