ABAP Select data from SAP table REXCSKCOSTPO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCSKCOSTPO
*  INTO TABLE @DATA(IT_REXCSKCOSTPO2).
*--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_REXCSKCOSTPO INDEX 1 INTO DATA(WA_REXCSKCOSTPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCSKCOSTPO>-SPRAVCE = 1.
<REXCSKCOSTPO>-TYPNEM = 1.
<REXCSKCOSTPO>-SWENR = 1.
<REXCSKCOSTPO>-KEYNUM = 1.
<REXCSKCOSTPO>-TYPDANP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCSKCOSTPO-X_COST_CONTROL, sy-vline,
  WA_REXCSKCOSTPO-PERKEY, sy-vline,
  WA_REXCSKCOSTPO-MONAT, sy-vline,
  WA_REXCSKCOSTPO-POCETSPL, sy-vline,
  WA_REXCSKCOSTPO-PORADSPL, sy-vline,
  WA_REXCSKCOSTPO-WSUPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCSKCOSTPO 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_REXCSKCOSTPO 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_REXCSKCOSTPO INTO WA_REXCSKCOSTPO.


*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 SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_REXCSKCOSTPO-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCSKCOSTPO-SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGRNR, internal->external for field KEYNUM
CALL FUNCTION 'CONVERSION_EXIT_SGRNR_OUTPUT'
  EXPORTING
    input =                      WA_REXCSKCOSTPO-KEYNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCSKCOSTPO-KEYNUM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXCSKCOSTPO-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCSKCOSTPO-AUFNR.
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_REXCSKCOSTPO_STR, 
SPRAVCE TYPE STRING,
TYPNEM TYPE STRING,
SWENR TYPE STRING,
KEYNUM TYPE STRING,
TYPDANP TYPE STRING,
X_COST_CONTROL TYPE STRING,
PERKEY TYPE STRING,
MONAT TYPE STRING,
POCETSPL TYPE STRING,
PORADSPL TYPE STRING,
WSUPL TYPE STRING,
INTRENO TYPE STRING,
TAXTOTAL TYPE STRING,
TAXDUE TYPE STRING,
TAXPOSTED TYPE STRING,
TAXTBPOSTED TYPE STRING,
WAERS TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCSKCOSTPO_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_REXCSKCOSTPO_STR-SPRAVCE sy-vline 
WA_REXCSKCOSTPO_STR-TYPNEM sy-vline 
WA_REXCSKCOSTPO_STR-SWENR sy-vline 
WA_REXCSKCOSTPO_STR-KEYNUM sy-vline 
WA_REXCSKCOSTPO_STR-TYPDANP sy-vline 
WA_REXCSKCOSTPO_STR-X_COST_CONTROL sy-vline 
WA_REXCSKCOSTPO_STR-PERKEY sy-vline 
WA_REXCSKCOSTPO_STR-MONAT sy-vline 
WA_REXCSKCOSTPO_STR-POCETSPL sy-vline 
WA_REXCSKCOSTPO_STR-PORADSPL sy-vline 
WA_REXCSKCOSTPO_STR-WSUPL sy-vline 
WA_REXCSKCOSTPO_STR-INTRENO sy-vline 
WA_REXCSKCOSTPO_STR-TAXTOTAL sy-vline 
WA_REXCSKCOSTPO_STR-TAXDUE sy-vline 
WA_REXCSKCOSTPO_STR-TAXPOSTED sy-vline 
WA_REXCSKCOSTPO_STR-TAXTBPOSTED sy-vline 
WA_REXCSKCOSTPO_STR-WAERS sy-vline 
WA_REXCSKCOSTPO_STR-GSBER sy-vline 
WA_REXCSKCOSTPO_STR-KOSTL sy-vline 
WA_REXCSKCOSTPO_STR-AUFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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