ABAP Select data from SAP table TKEPPLMEPARD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKEPPLMEPARD
*  INTO TABLE @DATA(IT_TKEPPLMEPARD2).
*--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_TKEPPLMEPARD INDEX 1 INTO DATA(WA_TKEPPLMEPARD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKEPPLMEPARD>-MANDT = 1.
<TKEPPLMEPARD>-APPLCLASS = 1.
<TKEPPLMEPARD>-SUBCLASS = 1.
<TKEPPLMEPARD>-TABNAME = 1.
<TKEPPLMEPARD>-PLLEV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKEPPLMEPARD-ID, sy-vline,
  WA_TKEPPLMEPARD-PARAM, sy-vline,
  WA_TKEPPLMEPARD-COUNTER, sy-vline,
  WA_TKEPPLMEPARD-PERSHIFT, sy-vline,
  WA_TKEPPLMEPARD-PERFROM, sy-vline,
  WA_TKEPPLMEPARD-PERTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKEPPLMEPARD 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_TKEPPLMEPARD 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_TKEPPLMEPARD INTO WA_TKEPPLMEPARD.


*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 PERI7, internal->external for field PERFROM
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_TKEPPLMEPARD-PERFROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKEPPLMEPARD-PERFROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERTO
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_TKEPPLMEPARD-PERTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKEPPLMEPARD-PERTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSIO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TKEPPLMEPARD-VERSIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKEPPLMEPARD-VERSIO.
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_TKEPPLMEPARD_STR, 
MANDT TYPE STRING,
APPLCLASS TYPE STRING,
SUBCLASS TYPE STRING,
TABNAME TYPE STRING,
PLLEV TYPE STRING,
ID TYPE STRING,
PARAM TYPE STRING,
COUNTER TYPE STRING,
PERSHIFT TYPE STRING,
PERFROM TYPE STRING,
PERTO TYPE STRING,
PLIKZ TYPE STRING,
VERSIO TYPE STRING,
VRGAR TYPE STRING,
CHTADD TYPE STRING,
CHTCANCEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKEPPLMEPARD_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_TKEPPLMEPARD_STR-MANDT sy-vline 
WA_TKEPPLMEPARD_STR-APPLCLASS sy-vline 
WA_TKEPPLMEPARD_STR-SUBCLASS sy-vline 
WA_TKEPPLMEPARD_STR-TABNAME sy-vline 
WA_TKEPPLMEPARD_STR-PLLEV sy-vline 
WA_TKEPPLMEPARD_STR-ID sy-vline 
WA_TKEPPLMEPARD_STR-PARAM sy-vline 
WA_TKEPPLMEPARD_STR-COUNTER sy-vline 
WA_TKEPPLMEPARD_STR-PERSHIFT sy-vline 
WA_TKEPPLMEPARD_STR-PERFROM sy-vline 
WA_TKEPPLMEPARD_STR-PERTO sy-vline 
WA_TKEPPLMEPARD_STR-PLIKZ sy-vline 
WA_TKEPPLMEPARD_STR-VERSIO sy-vline 
WA_TKEPPLMEPARD_STR-VRGAR sy-vline 
WA_TKEPPLMEPARD_STR-CHTADD sy-vline 
WA_TKEPPLMEPARD_STR-CHTCANCEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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