ABAP Select data from SAP table J_3RF_COVER_KO3_KO4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RF_COVER_KO3_KO4 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 J_3RF_COVER_KO3_KO4. 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 J_3RF_COVER_KO3_KO4 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_J_3RF_COVER_KO3_KO4 TYPE STANDARD TABLE OF J_3RF_COVER_KO3_KO4,
      WA_J_3RF_COVER_KO3_KO4 TYPE J_3RF_COVER_KO3_KO4,
      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: <J_3RF_COVER_KO3_KO4> TYPE J_3RF_COVER_KO3_KO4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RF_COVER_KO3_KO4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RF_COVER_KO3_KO4
  INTO TABLE IT_J_3RF_COVER_KO3_KO4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RF_COVER_KO3_KO4
*  INTO TABLE @DATA(IT_J_3RF_COVER_KO3_KO42).
*--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_J_3RF_COVER_KO3_KO4 INDEX 1 INTO DATA(WA_J_3RF_COVER_KO3_KO42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RF_COVER_KO3_KO4 ASSIGNING <J_3RF_COVER_KO3_KO4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RF_COVER_KO3_KO4>-ORG_NAME = 1.
<J_3RF_COVER_KO3_KO4>-OKPO = 1.
<J_3RF_COVER_KO3_KO4>-SUBD_NAME = 1.
<J_3RF_COVER_KO3_KO4>-SUBD_CODE = 1.
<J_3RF_COVER_KO3_KO4>-GJAHR = 1.

ENDLOOP.

LOOP AT IT_J_3RF_COVER_KO3_KO4 INTO WA_J_3RF_COVER_KO3_KO4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RF_COVER_KO3_KO4-CEO_POSITION, sy-vline,
  WA_J_3RF_COVER_KO3_KO4-CEO_NAME, sy-vline,
  WA_J_3RF_COVER_KO3_KO4-CHIEFACC, sy-vline,
  WA_J_3RF_COVER_KO3_KO4-RESP_POSITION, sy-vline,
  WA_J_3RF_COVER_KO3_KO4-RESP_NAME, sy-vline,
  WA_J_3RF_COVER_KO3_KO4-ACCOUNTANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RF_COVER_KO3_KO4 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_J_3RF_COVER_KO3_KO4 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_J_3RF_COVER_KO3_KO4 INTO WA_J_3RF_COVER_KO3_KO4.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_COVER_KO3_KO4-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_COVER_KO3_KO4-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field BEG_BAL
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_COVER_KO3_KO4-BEG_BAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_COVER_KO3_KO4-BEG_BAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field R_TURN
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_COVER_KO3_KO4-R_TURN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_COVER_KO3_KO4-R_TURN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field P_TURN
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_COVER_KO3_KO4-P_TURN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_COVER_KO3_KO4-P_TURN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field END_BAL
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_COVER_KO3_KO4-END_BAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_COVER_KO3_KO4-END_BAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WAGES
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_COVER_KO3_KO4-WAGES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_COVER_KO3_KO4-WAGES.
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_J_3RF_COVER_KO3_KO4_STR, 
ORG_NAME TYPE STRING,
OKPO TYPE STRING,
SUBD_NAME TYPE STRING,
SUBD_CODE TYPE STRING,
GJAHR TYPE STRING,
CEO_POSITION TYPE STRING,
CEO_NAME TYPE STRING,
CHIEFACC TYPE STRING,
RESP_POSITION TYPE STRING,
RESP_NAME TYPE STRING,
ACCOUNTANT TYPE STRING,
CASHIER TYPE STRING,
MONTH_NAME TYPE STRING,
OF_MONTH TYPE STRING,
DAY_NAME TYPE STRING,
Y_PAGES TYPE STRING,
M_PAGES TYPE STRING,
FP TYPE STRING,
LPM TYPE STRING,
LPY TYPE STRING,
LASTPG TYPE STRING,
BEG_BAL TYPE STRING,
R_TURN TYPE STRING,
P_TURN TYPE STRING,
END_BAL TYPE STRING,
WAGES TYPE STRING,
KO1_NUMB TYPE STRING,
KO2_NUMB TYPE STRING,
CURR_NAME TYPE STRING,
WAERS TYPE STRING,
KAZIDN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RF_COVER_KO3_KO4_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_J_3RF_COVER_KO3_KO4_STR-ORG_NAME sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-OKPO sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-SUBD_NAME sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-SUBD_CODE sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-GJAHR sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-CEO_POSITION sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-CEO_NAME sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-CHIEFACC sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-RESP_POSITION sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-RESP_NAME sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-ACCOUNTANT sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-CASHIER sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-MONTH_NAME sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-OF_MONTH sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-DAY_NAME sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-Y_PAGES sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-M_PAGES sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-FP sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-LPM sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-LPY sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-LASTPG sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-BEG_BAL sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-R_TURN sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-P_TURN sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-END_BAL sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-WAGES sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-KO1_NUMB sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-KO2_NUMB sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-CURR_NAME sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-WAERS sy-vline 
WA_J_3RF_COVER_KO3_KO4_STR-KAZIDN sy-vline      INTO ld_text SEPARATED BY SPACE.

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