ABAP Select data from SAP table T8JVT02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8JVT02 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 T8JVT02. 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 T8JVT02 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_T8JVT02 TYPE STANDARD TABLE OF T8JVT02,
      WA_T8JVT02 TYPE T8JVT02,
      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: <T8JVT02> TYPE T8JVT02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8JVT02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8JVT02
  INTO TABLE IT_T8JVT02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8JVT02
*  INTO TABLE @DATA(IT_T8JVT022).
*--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_T8JVT02 INDEX 1 INTO DATA(WA_T8JVT022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8JVT02 ASSIGNING <T8JVT02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8JVT02>-PARTN = 1.
<T8JVT02>-EQSHARE = 1.
<T8JVT02>-OPFLAG = 1.
<T8JVT02>-NPOIND = 1.
<T8JVT02>-CIIND = 1.

ENDLOOP.

LOOP AT IT_T8JVT02 INTO WA_T8JVT02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8JVT02-OWNSUSP, sy-vline,
  WA_T8JVT02-TAXCODE, sy-vline,
  WA_T8JVT02-INTCOCD, sy-vline,
  WA_T8JVT02-INTRCOVENT, sy-vline,
  WA_T8JVT02-INTCOACT, sy-vline,
  WA_T8JVT02-TSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8JVT02 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_T8JVT02 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_T8JVT02 INTO WA_T8JVT02.


*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_T8JVT02-PARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVT02-PARTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INTRCOVENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVT02-INTRCOVENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVT02-INTRCOVENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INTCOACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVT02-INTCOACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVT02-INTCOACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INTCOMPEGP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVT02-INTCOMPEGP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVT02-INTCOMPEGP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BMETHOD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVT02-BMETHOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVT02-BMETHOD.
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_T8JVT02_STR, 
PARTN TYPE STRING,
EQSHARE TYPE STRING,
OPFLAG TYPE STRING,
NPOIND TYPE STRING,
CIIND TYPE STRING,
OWNSUSP TYPE STRING,
TAXCODE TYPE STRING,
INTCOCD TYPE STRING,
INTRCOVENT TYPE STRING,
INTCOACT TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
HSL2 TYPE STRING,
HSL3 TYPE STRING,
TSL_GSUM TYPE STRING,
HSL_GSUM TYPE STRING,
HSL2_GSUM TYPE STRING,
HSL3_GSUM TYPE STRING,
TSL_NSUM TYPE STRING,
HSL_NSUM TYPE STRING,
HSL2_NSUM TYPE STRING,
HSL3_NSUM TYPE STRING,
CCTHRESH TYPE STRING,
INTCOMPEGP TYPE STRING,
BMETHOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8JVT02_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_T8JVT02_STR-PARTN sy-vline 
WA_T8JVT02_STR-EQSHARE sy-vline 
WA_T8JVT02_STR-OPFLAG sy-vline 
WA_T8JVT02_STR-NPOIND sy-vline 
WA_T8JVT02_STR-CIIND sy-vline 
WA_T8JVT02_STR-OWNSUSP sy-vline 
WA_T8JVT02_STR-TAXCODE sy-vline 
WA_T8JVT02_STR-INTCOCD sy-vline 
WA_T8JVT02_STR-INTRCOVENT sy-vline 
WA_T8JVT02_STR-INTCOACT sy-vline 
WA_T8JVT02_STR-TSL sy-vline 
WA_T8JVT02_STR-HSL sy-vline 
WA_T8JVT02_STR-HSL2 sy-vline 
WA_T8JVT02_STR-HSL3 sy-vline 
WA_T8JVT02_STR-TSL_GSUM sy-vline 
WA_T8JVT02_STR-HSL_GSUM sy-vline 
WA_T8JVT02_STR-HSL2_GSUM sy-vline 
WA_T8JVT02_STR-HSL3_GSUM sy-vline 
WA_T8JVT02_STR-TSL_NSUM sy-vline 
WA_T8JVT02_STR-HSL_NSUM sy-vline 
WA_T8JVT02_STR-HSL2_NSUM sy-vline 
WA_T8JVT02_STR-HSL3_NSUM sy-vline 
WA_T8JVT02_STR-CCTHRESH sy-vline 
WA_T8JVT02_STR-INTCOMPEGP sy-vline 
WA_T8JVT02_STR-BMETHOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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