ABAP Select data from SAP table JVAP_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVAP_DISP
*  INTO TABLE @DATA(IT_JVAP_DISP2).
*--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_JVAP_DISP INDEX 1 INTO DATA(WA_JVAP_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVAP_DISP>-DOCLN = 1.
<JVAP_DISP>-REFFIDLN = 1.
<JVAP_DISP>-RBUKRS = 1.
<JVAP_DISP>-RJVNAM = 1.
<JVAP_DISP>-REGROU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVAP_DISP-RRECIN, sy-vline,
  WA_JVAP_DISP-RTCUR, sy-vline,
  WA_JVAP_DISP-TSL, sy-vline,
  WA_JVAP_DISP-HSL, sy-vline,
  WA_JVAP_DISP-RACCT, sy-vline,
  WA_JVAP_DISP-RBUSA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVAP_DISP 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_JVAP_DISP 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_JVAP_DISP INTO WA_JVAP_DISP.


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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ORECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVAP_DISP-ORECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVAP_DISP-ORECID.
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_JVAP_DISP_STR, 
DOCLN TYPE STRING,
REFFIDLN TYPE STRING,
RBUKRS TYPE STRING,
RJVNAM TYPE STRING,
REGROU TYPE STRING,
RRECIN TYPE STRING,
RTCUR TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
RACCT TYPE STRING,
RBUSA TYPE STRING,
RKOKRS TYPE STRING,
RCNTR TYPE STRING,
RORDNR TYPE STRING,
RPROJK TYPE STRING,
RPRCTR TYPE STRING,
NPLNR TYPE STRING,
RUNIT TYPE STRING,
MSL TYPE STRING,
ACTIV TYPE STRING,
RYEAR TYPE STRING,
DRCRK TYPE STRING,
POPER TYPE STRING,
DOCCT TYPE STRING,
BUDAT TYPE STRING,
REFRYEAR TYPE STRING,
REFDOCLN TYPE STRING,
REFDOCCT TYPE STRING,
REFACTIV TYPE STRING,
BILID TYPE STRING,
ORECID TYPE STRING,
MWSKZ TYPE STRING,
BILLM TYPE STRING,
POM TYPE STRING,
PRODPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVAP_DISP_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_JVAP_DISP_STR-DOCLN sy-vline 
WA_JVAP_DISP_STR-REFFIDLN sy-vline 
WA_JVAP_DISP_STR-RBUKRS sy-vline 
WA_JVAP_DISP_STR-RJVNAM sy-vline 
WA_JVAP_DISP_STR-REGROU sy-vline 
WA_JVAP_DISP_STR-RRECIN sy-vline 
WA_JVAP_DISP_STR-RTCUR sy-vline 
WA_JVAP_DISP_STR-TSL sy-vline 
WA_JVAP_DISP_STR-HSL sy-vline 
WA_JVAP_DISP_STR-RACCT sy-vline 
WA_JVAP_DISP_STR-RBUSA sy-vline 
WA_JVAP_DISP_STR-RKOKRS sy-vline 
WA_JVAP_DISP_STR-RCNTR sy-vline 
WA_JVAP_DISP_STR-RORDNR sy-vline 
WA_JVAP_DISP_STR-RPROJK sy-vline 
WA_JVAP_DISP_STR-RPRCTR sy-vline 
WA_JVAP_DISP_STR-NPLNR sy-vline 
WA_JVAP_DISP_STR-RUNIT sy-vline 
WA_JVAP_DISP_STR-MSL sy-vline 
WA_JVAP_DISP_STR-ACTIV sy-vline 
WA_JVAP_DISP_STR-RYEAR sy-vline 
WA_JVAP_DISP_STR-DRCRK sy-vline 
WA_JVAP_DISP_STR-POPER sy-vline 
WA_JVAP_DISP_STR-DOCCT sy-vline 
WA_JVAP_DISP_STR-BUDAT sy-vline 
WA_JVAP_DISP_STR-REFRYEAR sy-vline 
WA_JVAP_DISP_STR-REFDOCLN sy-vline 
WA_JVAP_DISP_STR-REFDOCCT sy-vline 
WA_JVAP_DISP_STR-REFACTIV sy-vline 
WA_JVAP_DISP_STR-BILID sy-vline 
WA_JVAP_DISP_STR-ORECID sy-vline 
WA_JVAP_DISP_STR-MWSKZ sy-vline 
WA_JVAP_DISP_STR-BILLM sy-vline 
WA_JVAP_DISP_STR-POM sy-vline 
WA_JVAP_DISP_STR-PRODPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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