ABAP Select data from SAP table CNV_10020_ACTAL_BODY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_10020_ACTAL_BODY 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 CNV_10020_ACTAL_BODY. 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 CNV_10020_ACTAL_BODY 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_CNV_10020_ACTAL_BODY TYPE STANDARD TABLE OF CNV_10020_ACTAL_BODY,
      WA_CNV_10020_ACTAL_BODY TYPE CNV_10020_ACTAL_BODY,
      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: <CNV_10020_ACTAL_BODY> TYPE CNV_10020_ACTAL_BODY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_10020_ACTAL_BODY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_10020_ACTAL_BODY
  INTO TABLE IT_CNV_10020_ACTAL_BODY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_10020_ACTAL_BODY
*  INTO TABLE @DATA(IT_CNV_10020_ACTAL_BODY2).
*--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_CNV_10020_ACTAL_BODY INDEX 1 INTO DATA(WA_CNV_10020_ACTAL_BODY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_10020_ACTAL_BODY ASSIGNING <CNV_10020_ACTAL_BODY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_10020_ACTAL_BODY>-LOGMAX = 1.
<CNV_10020_ACTAL_BODY>-EVALUATION = 1.
<CNV_10020_ACTAL_BODY>-FIELDOBJ1 = 1.
<CNV_10020_ACTAL_BODY>-TYPE1 = 1.
<CNV_10020_ACTAL_BODY>-COMPNAME1 = 1.

ENDLOOP.

LOOP AT IT_CNV_10020_ACTAL_BODY INTO WA_CNV_10020_ACTAL_BODY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_10020_ACTAL_BODY-KEY1, sy-vline,
  WA_CNV_10020_ACTAL_BODY-FIELDOBJ2, sy-vline,
  WA_CNV_10020_ACTAL_BODY-TYPE2, sy-vline,
  WA_CNV_10020_ACTAL_BODY-COMPNAME2, sy-vline,
  WA_CNV_10020_ACTAL_BODY-KEY2, sy-vline,
  WA_CNV_10020_ACTAL_BODY-FIELDOBJ3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_10020_ACTAL_BODY 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_CNV_10020_ACTAL_BODY 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_CNV_10020_ACTAL_BODY INTO WA_CNV_10020_ACTAL_BODY.


*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 CNVO6, internal->external for field EVALUATION
CALL FUNCTION 'CONVERSION_EXIT_CNVO6_OUTPUT'
  EXPORTING
    input =                      WA_CNV_10020_ACTAL_BODY-EVALUATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_10020_ACTAL_BODY-EVALUATION.
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_CNV_10020_ACTAL_BODY_STR, 
LOGMAX TYPE STRING,
EVALUATION TYPE STRING,
FIELDOBJ1 TYPE STRING,
TYPE1 TYPE STRING,
COMPNAME1 TYPE STRING,
KEY1 TYPE STRING,
FIELDOBJ2 TYPE STRING,
TYPE2 TYPE STRING,
COMPNAME2 TYPE STRING,
KEY2 TYPE STRING,
FIELDOBJ3 TYPE STRING,
TYPE3 TYPE STRING,
COMPNAME3 TYPE STRING,
KEY3 TYPE STRING,
FIELDOBJ4 TYPE STRING,
TYPE4 TYPE STRING,
COMPNAME4 TYPE STRING,
KEY4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_10020_ACTAL_BODY_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_CNV_10020_ACTAL_BODY_STR-LOGMAX sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-EVALUATION sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-FIELDOBJ1 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-TYPE1 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-COMPNAME1 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-KEY1 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-FIELDOBJ2 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-TYPE2 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-COMPNAME2 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-KEY2 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-FIELDOBJ3 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-TYPE3 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-COMPNAME3 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-KEY3 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-FIELDOBJ4 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-TYPE4 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-COMPNAME4 sy-vline 
WA_CNV_10020_ACTAL_BODY_STR-KEY4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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