ABAP Select data from SAP table CORU_ACTIV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CORU_ACTIV
*  INTO TABLE @DATA(IT_CORU_ACTIV2).
*--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_CORU_ACTIV INDEX 1 INTO DATA(WA_CORU_ACTIV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CORU_ACTIV>-RUECK = 1.
<CORU_ACTIV>-AUFNR = 1.
<CORU_ACTIV>-APLFL = 1.
<CORU_ACTIV>-VORNR = 1.
<CORU_ACTIV>-UVORN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CORU_ACTIV-KAPAR, sy-vline,
  WA_CORU_ACTIV-SPLIT, sy-vline,
  WA_CORU_ACTIV-PERNR, sy-vline,
  WA_CORU_ACTIV-ZAUSW, sy-vline,
  WA_CORU_ACTIV-ARBPL, sy-vline,
  WA_CORU_ACTIV-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CORU_ACTIV 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_CORU_ACTIV 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_CORU_ACTIV INTO WA_CORU_ACTIV.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-AUFNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-UVORN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUEEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-RUEEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-RUEEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-MASEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-MASEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PEREH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-PEREH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-PEREH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ABREH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-ABREH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-ABREH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VA1EH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CORU_ACTIV-VA1EH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CORU_ACTIV-VA1EH.
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_CORU_ACTIV_STR, 
RUECK TYPE STRING,
AUFNR TYPE STRING,
APLFL TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
KAPAR TYPE STRING,
SPLIT TYPE STRING,
PERNR TYPE STRING,
ZAUSW TYPE STRING,
ARBPL TYPE STRING,
WERKS TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
BUDAT TYPE STRING,
GRUND TYPE STRING,
LTXA1 TYPE STRING,
RUEMG TYPE STRING,
RUEEH TYPE STRING,
MASMG TYPE STRING,
MASEH TYPE STRING,
PERMG TYPE STRING,
PEREH TYPE STRING,
ABRMG TYPE STRING,
ABREH TYPE STRING,
VA1MG TYPE STRING,
VA1EH TYPE STRING,
LOART TYPE STRING,
EXNAM TYPE STRING,
EXERD TYPE STRING,
EXERZ TYPE STRING,
EXTID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CORU_ACTIV_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_CORU_ACTIV_STR-RUECK sy-vline 
WA_CORU_ACTIV_STR-AUFNR sy-vline 
WA_CORU_ACTIV_STR-APLFL sy-vline 
WA_CORU_ACTIV_STR-VORNR sy-vline 
WA_CORU_ACTIV_STR-UVORN sy-vline 
WA_CORU_ACTIV_STR-KAPAR sy-vline 
WA_CORU_ACTIV_STR-SPLIT sy-vline 
WA_CORU_ACTIV_STR-PERNR sy-vline 
WA_CORU_ACTIV_STR-ZAUSW sy-vline 
WA_CORU_ACTIV_STR-ARBPL sy-vline 
WA_CORU_ACTIV_STR-WERKS sy-vline 
WA_CORU_ACTIV_STR-LDATE sy-vline 
WA_CORU_ACTIV_STR-LTIME sy-vline 
WA_CORU_ACTIV_STR-BUDAT sy-vline 
WA_CORU_ACTIV_STR-GRUND sy-vline 
WA_CORU_ACTIV_STR-LTXA1 sy-vline 
WA_CORU_ACTIV_STR-RUEMG sy-vline 
WA_CORU_ACTIV_STR-RUEEH sy-vline 
WA_CORU_ACTIV_STR-MASMG sy-vline 
WA_CORU_ACTIV_STR-MASEH sy-vline 
WA_CORU_ACTIV_STR-PERMG sy-vline 
WA_CORU_ACTIV_STR-PEREH sy-vline 
WA_CORU_ACTIV_STR-ABRMG sy-vline 
WA_CORU_ACTIV_STR-ABREH sy-vline 
WA_CORU_ACTIV_STR-VA1MG sy-vline 
WA_CORU_ACTIV_STR-VA1EH sy-vline 
WA_CORU_ACTIV_STR-LOART sy-vline 
WA_CORU_ACTIV_STR-EXNAM sy-vline 
WA_CORU_ACTIV_STR-EXERD sy-vline 
WA_CORU_ACTIV_STR-EXERZ sy-vline 
WA_CORU_ACTIV_STR-EXTID sy-vline      INTO ld_text SEPARATED BY SPACE.

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