ABAP Select data from SAP table JVSO2 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JVSO2 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 JVSO2. 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 JVSO2 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_JVSO2 TYPE STANDARD TABLE OF JVSO2,
      WA_JVSO2 TYPE JVSO2,
      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: <JVSO2> TYPE JVSO2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JVSO2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JVSO2
  INTO TABLE IT_JVSO2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVSO2
*  INTO TABLE @DATA(IT_JVSO22).
*--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_JVSO2 INDEX 1 INTO DATA(WA_JVSO22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JVSO2 ASSIGNING <JVSO2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVSO2>-RCLNT = 1.
<JVSO2>-GL_SIRID = 1.
<JVSO2>-RLDNR = 1.
<JVSO2>-RRCTY = 1.
<JVSO2>-RVERS = 1.

ENDLOOP.

LOOP AT IT_JVSO2 INTO WA_JVSO2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVSO2-RYEAR, sy-vline,
  WA_JVSO2-RTCUR, sy-vline,
  WA_JVSO2-DRCRK, sy-vline,
  WA_JVSO2-POPER, sy-vline,
  WA_JVSO2-DOCCT, sy-vline,
  WA_JVSO2-DOCNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVSO2 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_JVSO2 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_JVSO2 INTO WA_JVSO2.


*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_JVSO2-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-DOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RJVNAM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-RJVNAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-RJVNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REGROU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-REGROU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-REGROU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RPARTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-RPARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-RPARTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RBILID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-RBILID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-RBILID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field RPROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-RPROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-RPROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFDOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-REFDOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-REFDOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REFRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-REFRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-REFRYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFAWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-REFAWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-REFAWREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFLOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSO2-REFLOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSO2-REFLOGSYS.
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_JVSO2_STR, 
RCLNT TYPE STRING,
GL_SIRID TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RTCUR TYPE STRING,
DRCRK TYPE STRING,
POPER TYPE STRING,
DOCCT TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
RBUKRS TYPE STRING,
RJVNAM TYPE STRING,
REGROU TYPE STRING,
RPARTN TYPE STRING,
RBILID TYPE STRING,
RPROJK TYPE STRING,
RDPOM TYPE STRING,
RDBILLM TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
SGTXT TYPE STRING,
AUTOM TYPE STRING,
DOCTY TYPE STRING,
ACTIV TYPE STRING,
BVORG TYPE STRING,
BUDAT TYPE STRING,
WSDAT TYPE STRING,
REFDOCNR TYPE STRING,
REFRYEAR TYPE STRING,
REFDOCLN TYPE STRING,
REFDOCCT TYPE STRING,
REFACTIV TYPE STRING,
REFFIDLN TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
USNAM TYPE STRING,
BLDAT TYPE STRING,
BILLM TYPE STRING,
POM TYPE STRING,
AWTYP TYPE STRING,
AWORG TYPE STRING,
LOGSYS TYPE STRING,
REFAWTYP TYPE STRING,
REFAWREF TYPE STRING,
REFAWORG TYPE STRING,
REFLOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVSO2_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_JVSO2_STR-RCLNT sy-vline 
WA_JVSO2_STR-GL_SIRID sy-vline 
WA_JVSO2_STR-RLDNR sy-vline 
WA_JVSO2_STR-RRCTY sy-vline 
WA_JVSO2_STR-RVERS sy-vline 
WA_JVSO2_STR-RYEAR sy-vline 
WA_JVSO2_STR-RTCUR sy-vline 
WA_JVSO2_STR-DRCRK sy-vline 
WA_JVSO2_STR-POPER sy-vline 
WA_JVSO2_STR-DOCCT sy-vline 
WA_JVSO2_STR-DOCNR sy-vline 
WA_JVSO2_STR-DOCLN sy-vline 
WA_JVSO2_STR-RBUKRS sy-vline 
WA_JVSO2_STR-RJVNAM sy-vline 
WA_JVSO2_STR-REGROU sy-vline 
WA_JVSO2_STR-RPARTN sy-vline 
WA_JVSO2_STR-RBILID sy-vline 
WA_JVSO2_STR-RPROJK sy-vline 
WA_JVSO2_STR-RDPOM sy-vline 
WA_JVSO2_STR-RDBILLM sy-vline 
WA_JVSO2_STR-TSL sy-vline 
WA_JVSO2_STR-HSL sy-vline 
WA_JVSO2_STR-KSL sy-vline 
WA_JVSO2_STR-SGTXT sy-vline 
WA_JVSO2_STR-AUTOM sy-vline 
WA_JVSO2_STR-DOCTY sy-vline 
WA_JVSO2_STR-ACTIV sy-vline 
WA_JVSO2_STR-BVORG sy-vline 
WA_JVSO2_STR-BUDAT sy-vline 
WA_JVSO2_STR-WSDAT sy-vline 
WA_JVSO2_STR-REFDOCNR sy-vline 
WA_JVSO2_STR-REFRYEAR sy-vline 
WA_JVSO2_STR-REFDOCLN sy-vline 
WA_JVSO2_STR-REFDOCCT sy-vline 
WA_JVSO2_STR-REFACTIV sy-vline 
WA_JVSO2_STR-REFFIDLN sy-vline 
WA_JVSO2_STR-CPUDT sy-vline 
WA_JVSO2_STR-CPUTM sy-vline 
WA_JVSO2_STR-USNAM sy-vline 
WA_JVSO2_STR-BLDAT sy-vline 
WA_JVSO2_STR-BILLM sy-vline 
WA_JVSO2_STR-POM sy-vline 
WA_JVSO2_STR-AWTYP sy-vline 
WA_JVSO2_STR-AWORG sy-vline 
WA_JVSO2_STR-LOGSYS sy-vline 
WA_JVSO2_STR-REFAWTYP sy-vline 
WA_JVSO2_STR-REFAWREF sy-vline 
WA_JVSO2_STR-REFAWORG sy-vline 
WA_JVSO2_STR-REFLOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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