ABAP Select data from SAP table JVT8JV 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 JVT8JV 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 JVT8JV. 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 JVT8JV 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_JVT8JV TYPE STANDARD TABLE OF JVT8JV,
      WA_JVT8JV TYPE JVT8JV,
      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: <JVT8JV> TYPE JVT8JV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JVT8JV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JVT8JV
  INTO TABLE IT_JVT8JV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVT8JV
*  INTO TABLE @DATA(IT_JVT8JV2).
*--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_JVT8JV INDEX 1 INTO DATA(WA_JVT8JV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JVT8JV ASSIGNING <JVT8JV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVT8JV>-BFORMAT = 1.
<JVT8JV>-JOA = 1.
<JVT8JV>-VACTIVE = 1.
<JVT8JV>-TXJCD = 1.
<JVT8JV>-OUTPAYTERM = 1.

ENDLOOP.

LOOP AT IT_JVT8JV INTO WA_JVT8JV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVT8JV-OUTTAXCODE, sy-vline,
  WA_JVT8JV-TXJCD2, sy-vline,
  WA_JVT8JV-NBFORMAT, sy-vline,
  WA_JVT8JV-BFREQ, sy-vline,
  WA_JVT8JV-OVRDF, sy-vline,
  WA_JVT8JV-OVRND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVT8JV 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_JVT8JV 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_JVT8JV INTO WA_JVT8JV.


*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 JOA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT8JV-JOA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT8JV-JOA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PCOCOSTC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT8JV-PCOCOSTC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT8JV-PCOCOSTC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PCOPROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_JVT8JV-PCOPROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT8JV-PCOPROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PCOORDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT8JV-PCOORDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT8JV-PCOORDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT8JV-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT8JV-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROPERTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT8JV-PROPERTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT8JV-PROPERTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field IC_GROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT8JV-IC_GROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT8JV-IC_GROUP.
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_JVT8JV_STR, 
BFORMAT TYPE STRING,
JOA TYPE STRING,
VACTIVE TYPE STRING,
TXJCD TYPE STRING,
OUTPAYTERM TYPE STRING,
OUTTAXCODE TYPE STRING,
TXJCD2 TYPE STRING,
NBFORMAT TYPE STRING,
BFREQ TYPE STRING,
OVRDF TYPE STRING,
OVRND TYPE STRING,
PCOCOSTC TYPE STRING,
PCOPROJK TYPE STRING,
PCOORDNR TYPE STRING,
KOSTL TYPE STRING,
FUNDGROUP TYPE STRING,
CHECKFC TYPE STRING,
PROPERTY TYPE STRING,
BILLTHRES TYPE STRING,
BILLTHRESC TYPE STRING,
BILLTHRESA TYPE STRING,
PSCHEM TYPE STRING,
IC_GROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVT8JV_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_JVT8JV_STR-BFORMAT sy-vline 
WA_JVT8JV_STR-JOA sy-vline 
WA_JVT8JV_STR-VACTIVE sy-vline 
WA_JVT8JV_STR-TXJCD sy-vline 
WA_JVT8JV_STR-OUTPAYTERM sy-vline 
WA_JVT8JV_STR-OUTTAXCODE sy-vline 
WA_JVT8JV_STR-TXJCD2 sy-vline 
WA_JVT8JV_STR-NBFORMAT sy-vline 
WA_JVT8JV_STR-BFREQ sy-vline 
WA_JVT8JV_STR-OVRDF sy-vline 
WA_JVT8JV_STR-OVRND sy-vline 
WA_JVT8JV_STR-PCOCOSTC sy-vline 
WA_JVT8JV_STR-PCOPROJK sy-vline 
WA_JVT8JV_STR-PCOORDNR sy-vline 
WA_JVT8JV_STR-KOSTL sy-vline 
WA_JVT8JV_STR-FUNDGROUP sy-vline 
WA_JVT8JV_STR-CHECKFC sy-vline 
WA_JVT8JV_STR-PROPERTY sy-vline 
WA_JVT8JV_STR-BILLTHRES sy-vline 
WA_JVT8JV_STR-BILLTHRESC sy-vline 
WA_JVT8JV_STR-BILLTHRESA sy-vline 
WA_JVT8JV_STR-PSCHEM sy-vline 
WA_JVT8JV_STR-IC_GROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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