ABAP Select data from SAP table KAEP_PAROB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KAEP_PAROB
*  INTO TABLE @DATA(IT_KAEP_PAROB2).
*--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_KAEP_PAROB INDEX 1 INTO DATA(WA_KAEP_PAROB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KAEP_PAROB>-PAROB1 = 1.
<KAEP_PAROB>-POBID = 1.
<KAEP_PAROB>-POB_TXT = 1.
<KAEP_PAROB>-POBART = 1.
<KAEP_PAROB>-POBART_TXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KAEP_PAROB-PRTKO, sy-vline,
  WA_KAEP_PAROB-PRTAU, sy-vline,
  WA_KAEP_PAROB-PRTPS, sy-vline,
  WA_KAEP_PAROB-PRTPO, sy-vline,
  WA_KAEP_PAROB-PRTLS, sy-vline,
  WA_KAEP_PAROB-PRTPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KAEP_PAROB 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_KAEP_PAROB 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_KAEP_PAROB INTO WA_KAEP_PAROB.


*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 OBART, internal->external for field POBART
CALL FUNCTION 'CONVERSION_EXIT_OBART_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PAROB-POBART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PAROB-POBART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRTKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PAROB-PRTKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PAROB-PRTKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRTAU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PAROB-PRTAU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PAROB-PRTAU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PRTPS
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PAROB-PRTPS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PAROB-PRTPS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PRTPO
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PAROB-PRTPO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PAROB-PRTPO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRTPR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PAROB-PRTPR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PAROB-PRTPR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field PRTVR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PAROB-PRTVR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PAROB-PRTVR.
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_KAEP_PAROB_STR, 
PAROB1 TYPE STRING,
POBID TYPE STRING,
POB_TXT TYPE STRING,
POBART TYPE STRING,
POBART_TXT TYPE STRING,
PRTKO TYPE STRING,
PRTAU TYPE STRING,
PRTPS TYPE STRING,
PRTPO TYPE STRING,
PRTLS TYPE STRING,
PRTPR TYPE STRING,
PRTKT TYPE STRING,
PRTVR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KAEP_PAROB_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_KAEP_PAROB_STR-PAROB1 sy-vline 
WA_KAEP_PAROB_STR-POBID sy-vline 
WA_KAEP_PAROB_STR-POB_TXT sy-vline 
WA_KAEP_PAROB_STR-POBART sy-vline 
WA_KAEP_PAROB_STR-POBART_TXT sy-vline 
WA_KAEP_PAROB_STR-PRTKO sy-vline 
WA_KAEP_PAROB_STR-PRTAU sy-vline 
WA_KAEP_PAROB_STR-PRTPS sy-vline 
WA_KAEP_PAROB_STR-PRTPO sy-vline 
WA_KAEP_PAROB_STR-PRTLS sy-vline 
WA_KAEP_PAROB_STR-PRTPR sy-vline 
WA_KAEP_PAROB_STR-PRTKT sy-vline 
WA_KAEP_PAROB_STR-PRTVR sy-vline      INTO ld_text SEPARATED BY SPACE.

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