ABAP Select data from SAP table T8JVC_PEN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8JVC_PEN 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 T8JVC_PEN. 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 T8JVC_PEN 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_T8JVC_PEN TYPE STANDARD TABLE OF T8JVC_PEN,
      WA_T8JVC_PEN TYPE T8JVC_PEN,
      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: <T8JVC_PEN> TYPE T8JVC_PEN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8JVC_PEN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8JVC_PEN
  INTO TABLE IT_T8JVC_PEN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8JVC_PEN
*  INTO TABLE @DATA(IT_T8JVC_PEN2).
*--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_T8JVC_PEN INDEX 1 INTO DATA(WA_T8JVC_PEN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8JVC_PEN ASSIGNING <T8JVC_PEN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8JVC_PEN>-PEN01 = 1.
<T8JVC_PEN>-PEN02 = 1.
<T8JVC_PEN>-PEN03 = 1.
<T8JVC_PEN>-PEN04 = 1.
<T8JVC_PEN>-PEN05 = 1.

ENDLOOP.

LOOP AT IT_T8JVC_PEN INTO WA_T8JVC_PEN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8JVC_PEN-PEN06, sy-vline,
  WA_T8JVC_PEN-PEN07, sy-vline,
  WA_T8JVC_PEN-PEN08, sy-vline,
  WA_T8JVC_PEN-PEN09, sy-vline,
  WA_T8JVC_PEN-PEN10, sy-vline,
  WA_T8JVC_PEN-PEN11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8JVC_PEN 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_T8JVC_PEN 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_T8JVC_PEN INTO WA_T8JVC_PEN.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_T8JVC_PEN_STR, 
PEN01 TYPE STRING,
PEN02 TYPE STRING,
PEN03 TYPE STRING,
PEN04 TYPE STRING,
PEN05 TYPE STRING,
PEN06 TYPE STRING,
PEN07 TYPE STRING,
PEN08 TYPE STRING,
PEN09 TYPE STRING,
PEN10 TYPE STRING,
PEN11 TYPE STRING,
PEN12 TYPE STRING,
PEN13 TYPE STRING,
PEN14 TYPE STRING,
PEN15 TYPE STRING,
PEN16 TYPE STRING,
PEN17 TYPE STRING,
PEN18 TYPE STRING,
PEN19 TYPE STRING,
PEN20 TYPE STRING,
PEN21 TYPE STRING,
PEN22 TYPE STRING,
PEN23 TYPE STRING,
PEN24 TYPE STRING,
PEN25 TYPE STRING,
PEN26 TYPE STRING,
PEN27 TYPE STRING,
PEN28 TYPE STRING,
PEN29 TYPE STRING,
PEN30 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8JVC_PEN_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_T8JVC_PEN_STR-PEN01 sy-vline 
WA_T8JVC_PEN_STR-PEN02 sy-vline 
WA_T8JVC_PEN_STR-PEN03 sy-vline 
WA_T8JVC_PEN_STR-PEN04 sy-vline 
WA_T8JVC_PEN_STR-PEN05 sy-vline 
WA_T8JVC_PEN_STR-PEN06 sy-vline 
WA_T8JVC_PEN_STR-PEN07 sy-vline 
WA_T8JVC_PEN_STR-PEN08 sy-vline 
WA_T8JVC_PEN_STR-PEN09 sy-vline 
WA_T8JVC_PEN_STR-PEN10 sy-vline 
WA_T8JVC_PEN_STR-PEN11 sy-vline 
WA_T8JVC_PEN_STR-PEN12 sy-vline 
WA_T8JVC_PEN_STR-PEN13 sy-vline 
WA_T8JVC_PEN_STR-PEN14 sy-vline 
WA_T8JVC_PEN_STR-PEN15 sy-vline 
WA_T8JVC_PEN_STR-PEN16 sy-vline 
WA_T8JVC_PEN_STR-PEN17 sy-vline 
WA_T8JVC_PEN_STR-PEN18 sy-vline 
WA_T8JVC_PEN_STR-PEN19 sy-vline 
WA_T8JVC_PEN_STR-PEN20 sy-vline 
WA_T8JVC_PEN_STR-PEN21 sy-vline 
WA_T8JVC_PEN_STR-PEN22 sy-vline 
WA_T8JVC_PEN_STR-PEN23 sy-vline 
WA_T8JVC_PEN_STR-PEN24 sy-vline 
WA_T8JVC_PEN_STR-PEN25 sy-vline 
WA_T8JVC_PEN_STR-PEN26 sy-vline 
WA_T8JVC_PEN_STR-PEN27 sy-vline 
WA_T8JVC_PEN_STR-PEN28 sy-vline 
WA_T8JVC_PEN_STR-PEN29 sy-vline 
WA_T8JVC_PEN_STR-PEN30 sy-vline      INTO ld_text SEPARATED BY SPACE.

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