ABAP Select data from SAP table RGJV_CR_KEY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGJV_CR_KEY
*  INTO TABLE @DATA(IT_RGJV_CR_KEY2).
*--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_RGJV_CR_KEY INDEX 1 INTO DATA(WA_RGJV_CR_KEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGJV_CR_KEY>-BUKRS = 1.
<RGJV_CR_KEY>-PARTN = 1.
<RGJV_CR_KEY>-FCURR = 1.
<RGJV_CR_KEY>-VNAME = 1.
<RGJV_CR_KEY>-EGRUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGJV_CR_KEY-RECID, sy-vline,
  WA_RGJV_CR_KEY-PROJK, sy-vline,
  WA_RGJV_CR_KEY-CCPOM, sy-vline,
  WA_RGJV_CR_KEY-CCBILLM, sy-vline,
  WA_RGJV_CR_KEY-PRCTR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_RGJV_CR_KEY 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_RGJV_CR_KEY 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_RGJV_CR_KEY INTO WA_RGJV_CR_KEY.


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

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

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

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

*Conversion exit ABPSP, internal->external for field PROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RGJV_CR_KEY-PROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGJV_CR_KEY-PROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RGJV_CR_KEY-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGJV_CR_KEY-PRCTR.
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_RGJV_CR_KEY_STR, 
BUKRS TYPE STRING,
PARTN TYPE STRING,
FCURR TYPE STRING,
VNAME TYPE STRING,
EGRUP TYPE STRING,
RECID TYPE STRING,
PROJK TYPE STRING,
CCPOM TYPE STRING,
CCBILLM TYPE STRING,
PRCTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGJV_CR_KEY_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_RGJV_CR_KEY_STR-BUKRS sy-vline 
WA_RGJV_CR_KEY_STR-PARTN sy-vline 
WA_RGJV_CR_KEY_STR-FCURR sy-vline 
WA_RGJV_CR_KEY_STR-VNAME sy-vline 
WA_RGJV_CR_KEY_STR-EGRUP sy-vline 
WA_RGJV_CR_KEY_STR-RECID sy-vline 
WA_RGJV_CR_KEY_STR-PROJK sy-vline 
WA_RGJV_CR_KEY_STR-CCPOM sy-vline 
WA_RGJV_CR_KEY_STR-CCBILLM sy-vline 
WA_RGJV_CR_KEY_STR-PRCTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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