ABAP Select data from SAP table JVTO1_KEY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JVTO1_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 JVTO1_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 JVTO1_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_JVTO1_KEY TYPE STANDARD TABLE OF JVTO1_KEY,
      WA_JVTO1_KEY TYPE JVTO1_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: <JVTO1_KEY> TYPE JVTO1_KEY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JVTO1_KEY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JVTO1_KEY
  INTO TABLE IT_JVTO1_KEY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVTO1_KEY
*  INTO TABLE @DATA(IT_JVTO1_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_JVTO1_KEY INDEX 1 INTO DATA(WA_JVTO1_KEY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JVTO1_KEY ASSIGNING <JVTO1_KEY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVTO1_KEY>-RCLNT = 1.
<JVTO1_KEY>-RLDNR = 1.
<JVTO1_KEY>-RRCTY = 1.
<JVTO1_KEY>-RVERS = 1.
<JVTO1_KEY>-RYEAR = 1.

ENDLOOP.

LOOP AT IT_JVTO1_KEY INTO WA_JVTO1_KEY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVTO1_KEY-ROBJNR, sy-vline,
  WA_JVTO1_KEY-COBJNR, sy-vline,
  WA_JVTO1_KEY-SOBJNR, sy-vline,
  WA_JVTO1_KEY-RTCUR, sy-vline,
  WA_JVTO1_KEY-RUNIT, sy-vline,
  WA_JVTO1_KEY-DRCRK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVTO1_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_JVTO1_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_JVTO1_KEY INTO WA_JVTO1_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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RJVNAM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RJVNAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RJVNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REGROU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-REGROU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-REGROU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RCNTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RORDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RORDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RORDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field RPROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RPROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RPROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RPRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RPRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RPRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RRECIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RRECIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RRECIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RPARTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-RPARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-RPARTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_JVTO1_KEY-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVTO1_KEY-VORNR.
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_JVTO1_KEY_STR, 
RCLNT TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
ROBJNR TYPE STRING,
COBJNR TYPE STRING,
SOBJNR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
DRCRK TYPE STRING,
RPMAX TYPE STRING,
RBUKRS TYPE STRING,
RJVNAM TYPE STRING,
REGROU TYPE STRING,
RACCT TYPE STRING,
RBUSA TYPE STRING,
RCNTR TYPE STRING,
RORDNR TYPE STRING,
RPROJK TYPE STRING,
RPRCTR TYPE STRING,
RANLN1 TYPE STRING,
RANLN2 TYPE STRING,
RANBWA TYPE STRING,
RRECIN TYPE STRING,
RPARTN TYPE STRING,
RKOKRS TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
CSPRED TYPE STRING,
QSPRED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVTO1_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_JVTO1_KEY_STR-RCLNT sy-vline 
WA_JVTO1_KEY_STR-RLDNR sy-vline 
WA_JVTO1_KEY_STR-RRCTY sy-vline 
WA_JVTO1_KEY_STR-RVERS sy-vline 
WA_JVTO1_KEY_STR-RYEAR sy-vline 
WA_JVTO1_KEY_STR-ROBJNR sy-vline 
WA_JVTO1_KEY_STR-COBJNR sy-vline 
WA_JVTO1_KEY_STR-SOBJNR sy-vline 
WA_JVTO1_KEY_STR-RTCUR sy-vline 
WA_JVTO1_KEY_STR-RUNIT sy-vline 
WA_JVTO1_KEY_STR-DRCRK sy-vline 
WA_JVTO1_KEY_STR-RPMAX sy-vline 
WA_JVTO1_KEY_STR-RBUKRS sy-vline 
WA_JVTO1_KEY_STR-RJVNAM sy-vline 
WA_JVTO1_KEY_STR-REGROU sy-vline 
WA_JVTO1_KEY_STR-RACCT sy-vline 
WA_JVTO1_KEY_STR-RBUSA sy-vline 
WA_JVTO1_KEY_STR-RCNTR sy-vline 
WA_JVTO1_KEY_STR-RORDNR sy-vline 
WA_JVTO1_KEY_STR-RPROJK sy-vline 
WA_JVTO1_KEY_STR-RPRCTR sy-vline 
WA_JVTO1_KEY_STR-RANLN1 sy-vline 
WA_JVTO1_KEY_STR-RANLN2 sy-vline 
WA_JVTO1_KEY_STR-RANBWA sy-vline 
WA_JVTO1_KEY_STR-RRECIN sy-vline 
WA_JVTO1_KEY_STR-RPARTN sy-vline 
WA_JVTO1_KEY_STR-RKOKRS sy-vline 
WA_JVTO1_KEY_STR-NPLNR sy-vline 
WA_JVTO1_KEY_STR-VORNR sy-vline 
WA_JVTO1_KEY_STR-AUFPL sy-vline 
WA_JVTO1_KEY_STR-APLZL sy-vline 
WA_JVTO1_KEY_STR-CSPRED sy-vline 
WA_JVTO1_KEY_STR-QSPRED sy-vline      INTO ld_text SEPARATED BY SPACE.

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