ABAP Select data from SAP table V_T8J0G into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T8J0G 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 V_T8J0G. 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 V_T8J0G 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_V_T8J0G TYPE STANDARD TABLE OF V_T8J0G,
      WA_V_T8J0G TYPE V_T8J0G,
      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: <V_T8J0G> TYPE V_T8J0G.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T8J0G.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T8J0G
  INTO TABLE IT_V_T8J0G.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T8J0G
*  INTO TABLE @DATA(IT_V_T8J0G2).
*--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_V_T8J0G INDEX 1 INTO DATA(WA_V_T8J0G2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T8J0G ASSIGNING <V_T8J0G>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T8J0G>-MANDT = 1.
<V_T8J0G>-BUKRS = 1.
<V_T8J0G>-BMETHOD = 1.
<V_T8J0G>-JVFUNC = 1.
<V_T8J0G>-ITEMTYPE = 1.

ENDLOOP.

LOOP AT IT_V_T8J0G INTO WA_V_T8J0G.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T8J0G-RECID, sy-vline,
  WA_V_T8J0G-DEBPOSTKEY, sy-vline,
  WA_V_T8J0G-DEBSEIND, sy-vline,
  WA_V_T8J0G-DEBBILLIND, sy-vline,
  WA_V_T8J0G-DEBPAYBLK, sy-vline,
  WA_V_T8J0G-DEBRECID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T8J0G 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_V_T8J0G 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_V_T8J0G INTO WA_V_T8J0G.


*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 BMETHOD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8J0G-BMETHOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8J0G-BMETHOD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8J0G-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8J0G-RECID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEBBILLIND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8J0G-DEBBILLIND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8J0G-DEBBILLIND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEBRECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8J0G-DEBRECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8J0G-DEBRECID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CREBILLIND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8J0G-CREBILLIND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8J0G-CREBILLIND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CRERECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8J0G-CRERECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8J0G-CRERECID.
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_V_T8J0G_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BMETHOD TYPE STRING,
JVFUNC TYPE STRING,
ITEMTYPE TYPE STRING,
RECID TYPE STRING,
DEBPOSTKEY TYPE STRING,
DEBSEIND TYPE STRING,
DEBBILLIND TYPE STRING,
DEBPAYBLK TYPE STRING,
DEBRECID TYPE STRING,
CREPOSTKEY TYPE STRING,
CRESEIND TYPE STRING,
CREBILLIND TYPE STRING,
CREPAYBLK TYPE STRING,
CRERECID TYPE STRING,
BTEXT TYPE STRING,
JVATEXT TYPE STRING,
ITYPTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T8J0G_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_V_T8J0G_STR-MANDT sy-vline 
WA_V_T8J0G_STR-BUKRS sy-vline 
WA_V_T8J0G_STR-BMETHOD sy-vline 
WA_V_T8J0G_STR-JVFUNC sy-vline 
WA_V_T8J0G_STR-ITEMTYPE sy-vline 
WA_V_T8J0G_STR-RECID sy-vline 
WA_V_T8J0G_STR-DEBPOSTKEY sy-vline 
WA_V_T8J0G_STR-DEBSEIND sy-vline 
WA_V_T8J0G_STR-DEBBILLIND sy-vline 
WA_V_T8J0G_STR-DEBPAYBLK sy-vline 
WA_V_T8J0G_STR-DEBRECID sy-vline 
WA_V_T8J0G_STR-CREPOSTKEY sy-vline 
WA_V_T8J0G_STR-CRESEIND sy-vline 
WA_V_T8J0G_STR-CREBILLIND sy-vline 
WA_V_T8J0G_STR-CREPAYBLK sy-vline 
WA_V_T8J0G_STR-CRERECID sy-vline 
WA_V_T8J0G_STR-BTEXT sy-vline 
WA_V_T8J0G_STR-JVATEXT sy-vline 
WA_V_T8J0G_STR-ITYPTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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