ABAP Select data from SAP table RJKWWW_CHECK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKWWW_CHECK
*  INTO TABLE @DATA(IT_RJKWWW_CHECK2).
*--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_RJKWWW_CHECK INDEX 1 INTO DATA(WA_RJKWWW_CHECK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKWWW_CHECK>-GPNR = 1.
<RJKWWW_CHECK>-ORDERNO = 1.
<RJKWWW_CHECK>-BILLINGNO = 1.
<RJKWWW_CHECK>-PASSWORD = 1.
<RJKWWW_CHECK>-NAME1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKWWW_CHECK-NAME2, sy-vline,
  WA_RJKWWW_CHECK-PSTLZ, sy-vline,
  WA_RJKWWW_CHECK-PSTL2, sy-vline,
  WA_RJKWWW_CHECK-ORTPF, sy-vline,
  WA_RJKWWW_CHECK-PFACH, sy-vline,
  WA_RJKWWW_CHECK-ORT01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKWWW_CHECK 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_RJKWWW_CHECK 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_RJKWWW_CHECK INTO WA_RJKWWW_CHECK.


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

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

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

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

*Conversion exit TELN2, internal->external for field ISPTELVWP
CALL FUNCTION 'CONVERSION_EXIT_TELN2_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW_CHECK-ISPTELVWP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW_CHECK-ISPTELVWP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TELN1, internal->external for field ISPTELP
CALL FUNCTION 'CONVERSION_EXIT_TELN1_OUTPUT'
  EXPORTING
    input =                      WA_RJKWWW_CHECK-ISPTELP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWWW_CHECK-ISPTELP.
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_RJKWWW_CHECK_STR, 
GPNR TYPE STRING,
ORDERNO TYPE STRING,
BILLINGNO TYPE STRING,
PASSWORD TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
PSTLZ TYPE STRING,
PSTL2 TYPE STRING,
ORTPF TYPE STRING,
PFACH TYPE STRING,
ORT01 TYPE STRING,
STRASSEWWW TYPE STRING,
STRAS TYPE STRING,
PREDIRECTIONAL TYPE STRING,
POSTDIRECTIONAL TYPE STRING,
HAUSNWWW TYPE STRING,
HAUSN TYPE STRING,
HSNMR2 TYPE STRING,
LAND1 TYPE STRING,
REGIO TYPE STRING,
ISPTELVWP TYPE STRING,
ISPTELP TYPE STRING,
TELFX TYPE STRING,
ISPEMAIL TYPE STRING,
BANKL TYPE STRING,
BANKS TYPE STRING,
BANKN TYPE STRING,
IBAN TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
USERALIAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKWWW_CHECK_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_RJKWWW_CHECK_STR-GPNR sy-vline 
WA_RJKWWW_CHECK_STR-ORDERNO sy-vline 
WA_RJKWWW_CHECK_STR-BILLINGNO sy-vline 
WA_RJKWWW_CHECK_STR-PASSWORD sy-vline 
WA_RJKWWW_CHECK_STR-NAME1 sy-vline 
WA_RJKWWW_CHECK_STR-NAME2 sy-vline 
WA_RJKWWW_CHECK_STR-PSTLZ sy-vline 
WA_RJKWWW_CHECK_STR-PSTL2 sy-vline 
WA_RJKWWW_CHECK_STR-ORTPF sy-vline 
WA_RJKWWW_CHECK_STR-PFACH sy-vline 
WA_RJKWWW_CHECK_STR-ORT01 sy-vline 
WA_RJKWWW_CHECK_STR-STRASSEWWW sy-vline 
WA_RJKWWW_CHECK_STR-STRAS sy-vline 
WA_RJKWWW_CHECK_STR-PREDIRECTIONAL sy-vline 
WA_RJKWWW_CHECK_STR-POSTDIRECTIONAL sy-vline 
WA_RJKWWW_CHECK_STR-HAUSNWWW sy-vline 
WA_RJKWWW_CHECK_STR-HAUSN sy-vline 
WA_RJKWWW_CHECK_STR-HSNMR2 sy-vline 
WA_RJKWWW_CHECK_STR-LAND1 sy-vline 
WA_RJKWWW_CHECK_STR-REGIO sy-vline 
WA_RJKWWW_CHECK_STR-ISPTELVWP sy-vline 
WA_RJKWWW_CHECK_STR-ISPTELP sy-vline 
WA_RJKWWW_CHECK_STR-TELFX sy-vline 
WA_RJKWWW_CHECK_STR-ISPEMAIL sy-vline 
WA_RJKWWW_CHECK_STR-BANKL sy-vline 
WA_RJKWWW_CHECK_STR-BANKS sy-vline 
WA_RJKWWW_CHECK_STR-BANKN sy-vline 
WA_RJKWWW_CHECK_STR-IBAN sy-vline 
WA_RJKWWW_CHECK_STR-CCINS sy-vline 
WA_RJKWWW_CHECK_STR-CCNUM sy-vline 
WA_RJKWWW_CHECK_STR-USERALIAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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