ABAP Select data from SAP table DFKKPC_LOGP into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKPC_LOGP
*  INTO TABLE @DATA(IT_DFKKPC_LOGP2).
*--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_DFKKPC_LOGP INDEX 1 INTO DATA(WA_DFKKPC_LOGP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKPC_LOGP>-MANDT = 1.
<DFKKPC_LOGP>-LAUFI = 1.
<DFKKPC_LOGP>-CCINS = 1.
<DFKKPC_LOGP>-BUKRS = 1.
<DFKKPC_LOGP>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKPC_LOGP-STDOC, sy-vline,
  WA_DFKKPC_LOGP-BETRW, sy-vline,
  WA_DFKKPC_LOGP-CNTPO, sy-vline,
  WA_DFKKPC_LOGP-CNTCI, sy-vline,
  WA_DFKKPC_LOGP-GSBER, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_DFKKPC_LOGP 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_DFKKPC_LOGP 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_DFKKPC_LOGP INTO WA_DFKKPC_LOGP.


*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 ALPHA, internal->external for field STDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKPC_LOGP-STDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKPC_LOGP-STDOC.
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_DFKKPC_LOGP_STR, 
MANDT TYPE STRING,
LAUFI TYPE STRING,
CCINS TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
STDOC TYPE STRING,
BETRW TYPE STRING,
CNTPO TYPE STRING,
CNTCI TYPE STRING,
GSBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKPC_LOGP_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_DFKKPC_LOGP_STR-MANDT sy-vline 
WA_DFKKPC_LOGP_STR-LAUFI sy-vline 
WA_DFKKPC_LOGP_STR-CCINS sy-vline 
WA_DFKKPC_LOGP_STR-BUKRS sy-vline 
WA_DFKKPC_LOGP_STR-WAERS sy-vline 
WA_DFKKPC_LOGP_STR-STDOC sy-vline 
WA_DFKKPC_LOGP_STR-BETRW sy-vline 
WA_DFKKPC_LOGP_STR-CNTPO sy-vline 
WA_DFKKPC_LOGP_STR-CNTCI sy-vline 
WA_DFKKPC_LOGP_STR-GSBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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