ABAP Select data from SAP table T8JVC01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8JVC01 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 T8JVC01. 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 T8JVC01 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_T8JVC01 TYPE STANDARD TABLE OF T8JVC01,
      WA_T8JVC01 TYPE T8JVC01,
      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: <T8JVC01> TYPE T8JVC01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8JVC01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8JVC01
  INTO TABLE IT_T8JVC01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8JVC01
*  INTO TABLE @DATA(IT_T8JVC012).
*--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_T8JVC01 INDEX 1 INTO DATA(WA_T8JVC012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8JVC01 ASSIGNING <T8JVC01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8JVC01>-BUKRS = 1.
<T8JVC01>-PARTN = 1.
<T8JVC01>-EDATE = 1.
<T8JVC01>-BUDAT = 1.
<T8JVC01>-MONAT = 1.

ENDLOOP.

LOOP AT IT_T8JVC01 INTO WA_T8JVC01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8JVC01-SELECT, sy-vline,
  WA_T8JVC01-VNAME, sy-vline,
  WA_T8JVC01-EGRUP, sy-vline,
  WA_T8JVC01-PROJN, sy-vline,
  WA_T8JVC01-ETEXT, sy-vline,
  WA_T8JVC01-FUNDCUR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8JVC01 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_T8JVC01 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_T8JVC01 INTO WA_T8JVC01.


*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_T8JVC01-PARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC01-PARTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC01-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC01-VNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EGRUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC01-EGRUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC01-EGRUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROJN
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC01-PROJN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC01-PROJN.
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_T8JVC01_STR, 
BUKRS TYPE STRING,
PARTN TYPE STRING,
EDATE TYPE STRING,
BUDAT TYPE STRING,
MONAT TYPE STRING,
SELECT TYPE STRING,
VNAME TYPE STRING,
EGRUP TYPE STRING,
PROJN TYPE STRING,
ETEXT TYPE STRING,
FUNDCUR TYPE STRING,
FCVAL TYPE STRING,
LCVAL TYPE STRING,
FCVAL1 TYPE STRING,
LCVAL1 TYPE STRING,
TCVAL TYPE STRING,
TFVAL TYPE STRING,
BATCH TYPE STRING,
UNAME TYPE STRING,
SDATE TYPE STRING,
BLKED TYPE STRING,
SUSP TYPE STRING,
MODIFY TYPE STRING,
BTEXT TYPE STRING,
ANRED TYPE STRING,
POS_POM TYPE STRING,
DEF_POM TYPE STRING,
BVTYP TYPE STRING,
ZFBDT TYPE STRING,
XBLNR TYPE STRING,
SGTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8JVC01_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_T8JVC01_STR-BUKRS sy-vline 
WA_T8JVC01_STR-PARTN sy-vline 
WA_T8JVC01_STR-EDATE sy-vline 
WA_T8JVC01_STR-BUDAT sy-vline 
WA_T8JVC01_STR-MONAT sy-vline 
WA_T8JVC01_STR-SELECT sy-vline 
WA_T8JVC01_STR-VNAME sy-vline 
WA_T8JVC01_STR-EGRUP sy-vline 
WA_T8JVC01_STR-PROJN sy-vline 
WA_T8JVC01_STR-ETEXT sy-vline 
WA_T8JVC01_STR-FUNDCUR sy-vline 
WA_T8JVC01_STR-FCVAL sy-vline 
WA_T8JVC01_STR-LCVAL sy-vline 
WA_T8JVC01_STR-FCVAL1 sy-vline 
WA_T8JVC01_STR-LCVAL1 sy-vline 
WA_T8JVC01_STR-TCVAL sy-vline 
WA_T8JVC01_STR-TFVAL sy-vline 
WA_T8JVC01_STR-BATCH sy-vline 
WA_T8JVC01_STR-UNAME sy-vline 
WA_T8JVC01_STR-SDATE sy-vline 
WA_T8JVC01_STR-BLKED sy-vline 
WA_T8JVC01_STR-SUSP sy-vline 
WA_T8JVC01_STR-MODIFY sy-vline 
WA_T8JVC01_STR-BTEXT sy-vline 
WA_T8JVC01_STR-ANRED sy-vline 
WA_T8JVC01_STR-POS_POM sy-vline 
WA_T8JVC01_STR-DEF_POM sy-vline 
WA_T8JVC01_STR-BVTYP sy-vline 
WA_T8JVC01_STR-ZFBDT sy-vline 
WA_T8JVC01_STR-XBLNR sy-vline 
WA_T8JVC01_STR-SGTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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