ABAP Select data from SAP table V_T8JDM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T8JDM 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_T8JDM. 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_T8JDM 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_T8JDM TYPE STANDARD TABLE OF V_T8JDM,
      WA_V_T8JDM TYPE V_T8JDM,
      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_T8JDM> TYPE V_T8JDM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T8JDM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T8JDM
  INTO TABLE IT_V_T8JDM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T8JDM
*  INTO TABLE @DATA(IT_V_T8JDM2).
*--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_T8JDM INDEX 1 INTO DATA(WA_V_T8JDM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T8JDM ASSIGNING <V_T8JDM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T8JDM>-MANDT = 1.
<V_T8JDM>-BUKRS = 1.
<V_T8JDM>-SJIBE = 1.
<V_T8JDM>-PROPNO = 1.
<V_T8JDM>-REFNQ = 1.

ENDLOOP.

LOOP AT IT_V_T8JDM INTO WA_V_T8JDM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T8JDM-REFNO, sy-vline,
  WA_V_T8JDM-JIBCL, sy-vline,
  WA_V_T8JDM-JIBSA, sy-vline,
  WA_V_T8JDM-QUALIFIER, sy-vline,
  WA_V_T8JDM-WITHHOLD, sy-vline,
  WA_V_T8JDM-PROID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T8JDM 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_T8JDM 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_T8JDM INTO WA_V_T8JDM.


*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 KONPR, internal->external for field PROID
CALL FUNCTION 'CONVERSION_EXIT_KONPR_OUTPUT'
  EXPORTING
    input =                      WA_V_T8JDM-PROID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8JDM-PROID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8JDM-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8JDM-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8JDM-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8JDM-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8JDM-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8JDM-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T8JDM-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T8JDM-ANLN2.
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_T8JDM_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
SJIBE TYPE STRING,
PROPNO TYPE STRING,
REFNQ TYPE STRING,
REFNO TYPE STRING,
JIBCL TYPE STRING,
JIBSA TYPE STRING,
QUALIFIER TYPE STRING,
WITHHOLD TYPE STRING,
PROID TYPE STRING,
AUFNR TYPE STRING,
KOSTL TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
NEWBW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T8JDM_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_T8JDM_STR-MANDT sy-vline 
WA_V_T8JDM_STR-BUKRS sy-vline 
WA_V_T8JDM_STR-SJIBE sy-vline 
WA_V_T8JDM_STR-PROPNO sy-vline 
WA_V_T8JDM_STR-REFNQ sy-vline 
WA_V_T8JDM_STR-REFNO sy-vline 
WA_V_T8JDM_STR-JIBCL sy-vline 
WA_V_T8JDM_STR-JIBSA sy-vline 
WA_V_T8JDM_STR-QUALIFIER sy-vline 
WA_V_T8JDM_STR-WITHHOLD sy-vline 
WA_V_T8JDM_STR-PROID sy-vline 
WA_V_T8JDM_STR-AUFNR sy-vline 
WA_V_T8JDM_STR-KOSTL sy-vline 
WA_V_T8JDM_STR-ANLN1 sy-vline 
WA_V_T8JDM_STR-ANLN2 sy-vline 
WA_V_T8JDM_STR-NEWBW sy-vline      INTO ld_text SEPARATED BY SPACE.

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