ABAP Select data from SAP table TJKSDPROTOCOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TJKSDPROTOCOL
*  INTO TABLE @DATA(IT_TJKSDPROTOCOL2).
*--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_TJKSDPROTOCOL INDEX 1 INTO DATA(WA_TJKSDPROTOCOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TJKSDPROTOCOL>-MANDT = 1.
<TJKSDPROTOCOL>-COUNT1 = 1.
<TJKSDPROTOCOL>-COUNT2 = 1.
<TJKSDPROTOCOL>-COUNT3 = 1.
<TJKSDPROTOCOL>-COUNT4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TJKSDPROTOCOL-COUNT5, sy-vline,
  WA_TJKSDPROTOCOL-COUNT6, sy-vline,
  WA_TJKSDPROTOCOL-COUNT7, sy-vline,
  WA_TJKSDPROTOCOL-COUNT8, sy-vline,
  WA_TJKSDPROTOCOL-COUNT9, sy-vline,
  WA_TJKSDPROTOCOL-COUNT10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TJKSDPROTOCOL 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_TJKSDPROTOCOL 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_TJKSDPROTOCOL INTO WA_TJKSDPROTOCOL.


*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_TJKSDPROTOCOL_STR, 
MANDT TYPE STRING,
COUNT1 TYPE STRING,
COUNT2 TYPE STRING,
COUNT3 TYPE STRING,
COUNT4 TYPE STRING,
COUNT5 TYPE STRING,
COUNT6 TYPE STRING,
COUNT7 TYPE STRING,
COUNT8 TYPE STRING,
COUNT9 TYPE STRING,
COUNT10 TYPE STRING,
COUNT11 TYPE STRING,
COUNT12 TYPE STRING,
COUNT13 TYPE STRING,
COUNT14 TYPE STRING,
COUNT15 TYPE STRING,
COUNT16 TYPE STRING,
COUNT17 TYPE STRING,
COUNT18 TYPE STRING,
COUNT19 TYPE STRING,
COUNT20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TJKSDPROTOCOL_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_TJKSDPROTOCOL_STR-MANDT sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT1 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT2 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT3 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT4 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT5 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT6 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT7 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT8 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT9 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT10 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT11 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT12 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT13 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT14 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT15 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT16 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT17 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT18 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT19 sy-vline 
WA_TJKSDPROTOCOL_STR-COUNT20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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