ABAP Select data from SAP table RJYKNBK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJYKNBK
*  INTO TABLE @DATA(IT_RJYKNBK2).
*--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_RJYKNBK INDEX 1 INTO DATA(WA_RJYKNBK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJYKNBK>-KOART = 1.
<RJYKNBK>-RFNAME = 1.
<RJYKNBK>-LOGSYS = 1.
<RJYKNBK>-ANWEN = 1.
<RJYKNBK>-GPNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJYKNBK-BANKS, sy-vline,
  WA_RJYKNBK-BANKL, sy-vline,
  WA_RJYKNBK-BANKN, sy-vline,
  WA_RJYKNBK-BKONT, sy-vline,
  WA_RJYKNBK-BVTYP, sy-vline,
  WA_RJYKNBK-XEZER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJYKNBK 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_RJYKNBK 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_RJYKNBK INTO WA_RJYKNBK.


*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_RJYKNBK-GPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJYKNBK-GPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field FLIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJYKNBK-FLIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJYKNBK-FLIFNR.
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_RJYKNBK_STR, 
KOART TYPE STRING,
RFNAME TYPE STRING,
LOGSYS TYPE STRING,
ANWEN TYPE STRING,
GPNR TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BKONT TYPE STRING,
BVTYP TYPE STRING,
XEZER TYPE STRING,
BKREF TYPE STRING,
DBCODE TYPE STRING,
DBERGEBNIS TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
BANKA TYPE STRING,
PROVZ TYPE STRING,
STRAS TYPE STRING,
ORT01 TYPE STRING,
SWIFT TYPE STRING,
BGRUP TYPE STRING,
XPGRO TYPE STRING,
LOEVM TYPE STRING,
BNKLZ TYPE STRING,
PSKTO TYPE STRING,
ADRNR TYPE STRING,
BRNCH TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
FKUNNR TYPE STRING,
FLIFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJYKNBK_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_RJYKNBK_STR-KOART sy-vline 
WA_RJYKNBK_STR-RFNAME sy-vline 
WA_RJYKNBK_STR-LOGSYS sy-vline 
WA_RJYKNBK_STR-ANWEN sy-vline 
WA_RJYKNBK_STR-GPNR sy-vline 
WA_RJYKNBK_STR-BANKS sy-vline 
WA_RJYKNBK_STR-BANKL sy-vline 
WA_RJYKNBK_STR-BANKN sy-vline 
WA_RJYKNBK_STR-BKONT sy-vline 
WA_RJYKNBK_STR-BVTYP sy-vline 
WA_RJYKNBK_STR-XEZER sy-vline 
WA_RJYKNBK_STR-BKREF sy-vline 
WA_RJYKNBK_STR-DBCODE sy-vline 
WA_RJYKNBK_STR-DBERGEBNIS sy-vline 
WA_RJYKNBK_STR-ERDAT sy-vline 
WA_RJYKNBK_STR-ERNAM sy-vline 
WA_RJYKNBK_STR-BANKA sy-vline 
WA_RJYKNBK_STR-PROVZ sy-vline 
WA_RJYKNBK_STR-STRAS sy-vline 
WA_RJYKNBK_STR-ORT01 sy-vline 
WA_RJYKNBK_STR-SWIFT sy-vline 
WA_RJYKNBK_STR-BGRUP sy-vline 
WA_RJYKNBK_STR-XPGRO sy-vline 
WA_RJYKNBK_STR-LOEVM sy-vline 
WA_RJYKNBK_STR-BNKLZ sy-vline 
WA_RJYKNBK_STR-PSKTO sy-vline 
WA_RJYKNBK_STR-ADRNR sy-vline 
WA_RJYKNBK_STR-BRNCH sy-vline 
WA_RJYKNBK_STR-KUNNR sy-vline 
WA_RJYKNBK_STR-LIFNR sy-vline 
WA_RJYKNBK_STR-FKUNNR sy-vline 
WA_RJYKNBK_STR-FLIFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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