ABAP Select data from SAP table CNVA_20400_CHECK_S_ACT_CO_MOD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNVA_20400_CHECK_S_ACT_CO_MOD 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 CNVA_20400_CHECK_S_ACT_CO_MOD. 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 CNVA_20400_CHECK_S_ACT_CO_MOD 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_CNVA_20400_CHECK_S_ACT_CO_MOD TYPE STANDARD TABLE OF CNVA_20400_CHECK_S_ACT_CO_MOD,
      WA_CNVA_20400_CHECK_S_ACT_CO_MOD TYPE CNVA_20400_CHECK_S_ACT_CO_MOD,
      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: <CNVA_20400_CHECK_S_ACT_CO_MOD> TYPE CNVA_20400_CHECK_S_ACT_CO_MOD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNVA_20400_CHECK_S_ACT_CO_MOD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNVA_20400_CHECK_S_ACT_CO_MOD
  INTO TABLE IT_CNVA_20400_CHECK_S_ACT_CO_MOD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVA_20400_CHECK_S_ACT_CO_MOD
*  INTO TABLE @DATA(IT_CNVA_20400_CHECK_S_ACT_CO_MOD2).
*--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_CNVA_20400_CHECK_S_ACT_CO_MOD INDEX 1 INTO DATA(WA_CNVA_20400_CHECK_S_ACT_CO_MOD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNVA_20400_CHECK_S_ACT_CO_MOD ASSIGNING <CNVA_20400_CHECK_S_ACT_CO_MOD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVA_20400_CHECK_S_ACT_CO_MOD>-KOKRS = 1.
<CNVA_20400_CHECK_S_ACT_CO_MOD>-BEZEI = 1.
<CNVA_20400_CHECK_S_ACT_CO_MOD>-KOSTS = 1.
<CNVA_20400_CHECK_S_ACT_CO_MOD>-RCLAC = 1.
<CNVA_20400_CHECK_S_ACT_CO_MOD>-AUFTR = 1.

ENDLOOP.

LOOP AT IT_CNVA_20400_CHECK_S_ACT_CO_MOD INTO WA_CNVA_20400_CHECK_S_ACT_CO_MOD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVA_20400_CHECK_S_ACT_CO_MOD-OAUFT, sy-vline,
  WA_CNVA_20400_CHECK_S_ACT_CO_MOD-COABC, sy-vline,
  WA_CNVA_20400_CHECK_S_ACT_CO_MOD-PCRCH, sy-vline,
  WA_CNVA_20400_CHECK_S_ACT_CO_MOD-PRJKT, sy-vline,
  WA_CNVA_20400_CHECK_S_ACT_CO_MOD-ACTPA, sy-vline,
  WA_CNVA_20400_CHECK_S_ACT_CO_MOD-RVAUF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVA_20400_CHECK_S_ACT_CO_MOD 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_CNVA_20400_CHECK_S_ACT_CO_MOD 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_CNVA_20400_CHECK_S_ACT_CO_MOD INTO WA_CNVA_20400_CHECK_S_ACT_CO_MOD.


*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_CNVA_20400_CHECK_S_ACT_CO_MOD_STR, 
KOKRS TYPE STRING,
BEZEI TYPE STRING,
KOSTS TYPE STRING,
RCLAC TYPE STRING,
AUFTR TYPE STRING,
OAUFT TYPE STRING,
COABC TYPE STRING,
PCRCH TYPE STRING,
PRJKT TYPE STRING,
ACTPA TYPE STRING,
RVAUF TYPE STRING,
OBLVB TYPE STRING,
RMKAL TYPE STRING,
REACTIVE TYPE STRING,
RABWG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVA_20400_CHECK_S_ACT_CO_MOD_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_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-KOKRS sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-BEZEI sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-KOSTS sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-RCLAC sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-AUFTR sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-OAUFT sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-COABC sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-PCRCH sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-PRJKT sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-ACTPA sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-RVAUF sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-OBLVB sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-RMKAL sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-REACTIVE sy-vline 
WA_CNVA_20400_CHECK_S_ACT_CO_MOD_STR-RABWG sy-vline      INTO ld_text SEPARATED BY SPACE.

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