ABAP Select data from SAP table T8JVC_BTX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8JVC_BTX 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_BTX. 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_BTX 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_BTX TYPE STANDARD TABLE OF T8JVC_BTX,
      WA_T8JVC_BTX TYPE T8JVC_BTX,
      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_BTX> TYPE T8JVC_BTX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8JVC_BTX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8JVC_BTX
  INTO TABLE IT_T8JVC_BTX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8JVC_BTX
*  INTO TABLE @DATA(IT_T8JVC_BTX2).
*--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_BTX INDEX 1 INTO DATA(WA_T8JVC_BTX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8JVC_BTX ASSIGNING <T8JVC_BTX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8JVC_BTX>-BTX01 = 1.
<T8JVC_BTX>-BTX02 = 1.
<T8JVC_BTX>-BTX03 = 1.
<T8JVC_BTX>-BTX04 = 1.
<T8JVC_BTX>-BTX05 = 1.

ENDLOOP.

LOOP AT IT_T8JVC_BTX INTO WA_T8JVC_BTX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8JVC_BTX-BTX06, sy-vline,
  WA_T8JVC_BTX-BTX07, sy-vline,
  WA_T8JVC_BTX-BTX08, sy-vline,
  WA_T8JVC_BTX-BTX09, sy-vline,
  WA_T8JVC_BTX-BTX10, sy-vline,
  WA_T8JVC_BTX-BTX11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8JVC_BTX 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_BTX 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_BTX INTO WA_T8JVC_BTX.


*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_BTX_STR, 
BTX01 TYPE STRING,
BTX02 TYPE STRING,
BTX03 TYPE STRING,
BTX04 TYPE STRING,
BTX05 TYPE STRING,
BTX06 TYPE STRING,
BTX07 TYPE STRING,
BTX08 TYPE STRING,
BTX09 TYPE STRING,
BTX10 TYPE STRING,
BTX11 TYPE STRING,
BTX12 TYPE STRING,
BTX13 TYPE STRING,
BTX14 TYPE STRING,
BTX15 TYPE STRING,
BTX16 TYPE STRING,
BTX17 TYPE STRING,
BTX18 TYPE STRING,
BTX19 TYPE STRING,
BTX20 TYPE STRING,
BTX21 TYPE STRING,
BTX22 TYPE STRING,
BTX23 TYPE STRING,
BTX24 TYPE STRING,
BTX25 TYPE STRING,
BTX26 TYPE STRING,
BTX27 TYPE STRING,
BTX28 TYPE STRING,
BTX29 TYPE STRING,
BTX30 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8JVC_BTX_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_BTX_STR-BTX01 sy-vline 
WA_T8JVC_BTX_STR-BTX02 sy-vline 
WA_T8JVC_BTX_STR-BTX03 sy-vline 
WA_T8JVC_BTX_STR-BTX04 sy-vline 
WA_T8JVC_BTX_STR-BTX05 sy-vline 
WA_T8JVC_BTX_STR-BTX06 sy-vline 
WA_T8JVC_BTX_STR-BTX07 sy-vline 
WA_T8JVC_BTX_STR-BTX08 sy-vline 
WA_T8JVC_BTX_STR-BTX09 sy-vline 
WA_T8JVC_BTX_STR-BTX10 sy-vline 
WA_T8JVC_BTX_STR-BTX11 sy-vline 
WA_T8JVC_BTX_STR-BTX12 sy-vline 
WA_T8JVC_BTX_STR-BTX13 sy-vline 
WA_T8JVC_BTX_STR-BTX14 sy-vline 
WA_T8JVC_BTX_STR-BTX15 sy-vline 
WA_T8JVC_BTX_STR-BTX16 sy-vline 
WA_T8JVC_BTX_STR-BTX17 sy-vline 
WA_T8JVC_BTX_STR-BTX18 sy-vline 
WA_T8JVC_BTX_STR-BTX19 sy-vline 
WA_T8JVC_BTX_STR-BTX20 sy-vline 
WA_T8JVC_BTX_STR-BTX21 sy-vline 
WA_T8JVC_BTX_STR-BTX22 sy-vline 
WA_T8JVC_BTX_STR-BTX23 sy-vline 
WA_T8JVC_BTX_STR-BTX24 sy-vline 
WA_T8JVC_BTX_STR-BTX25 sy-vline 
WA_T8JVC_BTX_STR-BTX26 sy-vline 
WA_T8JVC_BTX_STR-BTX27 sy-vline 
WA_T8JVC_BTX_STR-BTX28 sy-vline 
WA_T8JVC_BTX_STR-BTX29 sy-vline 
WA_T8JVC_BTX_STR-BTX30 sy-vline      INTO ld_text SEPARATED BY SPACE.

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