ABAP Select data from SAP table T8JVC03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8JVC03 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 T8JVC03. 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 T8JVC03 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_T8JVC03 TYPE STANDARD TABLE OF T8JVC03,
      WA_T8JVC03 TYPE T8JVC03,
      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: <T8JVC03> TYPE T8JVC03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8JVC03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8JVC03
  INTO TABLE IT_T8JVC03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8JVC03
*  INTO TABLE @DATA(IT_T8JVC032).
*--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_T8JVC03 INDEX 1 INTO DATA(WA_T8JVC032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8JVC03 ASSIGNING <T8JVC03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8JVC03>-RLDNR = 1.
<T8JVC03>-RRCTY = 1.
<T8JVC03>-RVERS = 1.
<T8JVC03>-RYEAR = 1.
<T8JVC03>-ROBJNR = 1.

ENDLOOP.

LOOP AT IT_T8JVC03 INTO WA_T8JVC03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8JVC03-SOBJNR, sy-vline,
  WA_T8JVC03-RTCUR, sy-vline,
  WA_T8JVC03-RUNIT, sy-vline,
  WA_T8JVC03-DRCRK, sy-vline,
  WA_T8JVC03-RPMAX, sy-vline,
  WA_T8JVC03-PERIOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8JVC03 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_T8JVC03 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_T8JVC03 INTO WA_T8JVC03.


*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_T8JVC03-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RJVNAM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RJVNAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RJVNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REGROU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-REGROU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-REGROU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RCNTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RORDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RORDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RORDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field RPROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RPROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RPROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RRECIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RRECIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RRECIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RPARTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVC03-RPARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVC03-RPARTN.
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_T8JVC03_STR, 
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
ROBJNR TYPE STRING,
SOBJNR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
DRCRK TYPE STRING,
RPMAX TYPE STRING,
PERIOD TYPE STRING,
RECOV TYPE STRING,
RBUKRS TYPE STRING,
RJVNAM TYPE STRING,
REGROU TYPE STRING,
RACCT TYPE STRING,
RCNTR TYPE STRING,
RORDNR TYPE STRING,
RPROJK TYPE STRING,
RRECIN TYPE STRING,
RPARTN TYPE STRING,
TAMT TYPE STRING,
HAMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8JVC03_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_T8JVC03_STR-RLDNR sy-vline 
WA_T8JVC03_STR-RRCTY sy-vline 
WA_T8JVC03_STR-RVERS sy-vline 
WA_T8JVC03_STR-RYEAR sy-vline 
WA_T8JVC03_STR-ROBJNR sy-vline 
WA_T8JVC03_STR-SOBJNR sy-vline 
WA_T8JVC03_STR-RTCUR sy-vline 
WA_T8JVC03_STR-RUNIT sy-vline 
WA_T8JVC03_STR-DRCRK sy-vline 
WA_T8JVC03_STR-RPMAX sy-vline 
WA_T8JVC03_STR-PERIOD sy-vline 
WA_T8JVC03_STR-RECOV sy-vline 
WA_T8JVC03_STR-RBUKRS sy-vline 
WA_T8JVC03_STR-RJVNAM sy-vline 
WA_T8JVC03_STR-REGROU sy-vline 
WA_T8JVC03_STR-RACCT sy-vline 
WA_T8JVC03_STR-RCNTR sy-vline 
WA_T8JVC03_STR-RORDNR sy-vline 
WA_T8JVC03_STR-RPROJK sy-vline 
WA_T8JVC03_STR-RRECIN sy-vline 
WA_T8JVC03_STR-RPARTN sy-vline 
WA_T8JVC03_STR-TAMT sy-vline 
WA_T8JVC03_STR-HAMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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