ABAP Select data from SAP table KAEP_PI 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 KAEP_PI 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_PI. 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_PI 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_PI TYPE STANDARD TABLE OF KAEP_PI,
      WA_KAEP_PI TYPE KAEP_PI,
      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_PI> TYPE KAEP_PI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KAEP_PI
*  INTO TABLE @DATA(IT_KAEP_PI2).
*--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_PI INDEX 1 INTO DATA(WA_KAEP_PI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KAEP_PI>-WRTTP = 1.
<KAEP_PI>-BEKNZ = 1.
<KAEP_PI>-HRKFT = 1.
<KAEP_PI>-BUZEI = 1.
<KAEP_PI>-ZLENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KAEP_PI-BW_REFBZ, sy-vline,
  WA_KAEP_PI-PERIO, sy-vline,
  WA_KAEP_PI-MVFLG, sy-vline,
  WA_KAEP_PI-MUVFLG, sy-vline,
  WA_KAEP_PI-BWAER, sy-vline,
  WA_KAEP_PI-SGTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KAEP_PI 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_PI 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_PI INTO WA_KAEP_PI.


*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 WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PI-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PI-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BEKNZ, internal->external for field BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PI-BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PI-BEKNZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_PI-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_PI-EBELN.
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_PI_STR, 
WRTTP TYPE STRING,
BEKNZ TYPE STRING,
HRKFT TYPE STRING,
BUZEI TYPE STRING,
ZLENR TYPE STRING,
BW_REFBZ TYPE STRING,
PERIO TYPE STRING,
MVFLG TYPE STRING,
MUVFLG TYPE STRING,
BWAER TYPE STRING,
SGTXT TYPE STRING,
REFBZ TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
EBTXT TYPE STRING,
ZEKKN TYPE STRING,
BTRKL TYPE STRING,
BELTP TYPE STRING,
REFBZ_FI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KAEP_PI_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_PI_STR-WRTTP sy-vline 
WA_KAEP_PI_STR-BEKNZ sy-vline 
WA_KAEP_PI_STR-HRKFT sy-vline 
WA_KAEP_PI_STR-BUZEI sy-vline 
WA_KAEP_PI_STR-ZLENR sy-vline 
WA_KAEP_PI_STR-BW_REFBZ sy-vline 
WA_KAEP_PI_STR-PERIO sy-vline 
WA_KAEP_PI_STR-MVFLG sy-vline 
WA_KAEP_PI_STR-MUVFLG sy-vline 
WA_KAEP_PI_STR-BWAER sy-vline 
WA_KAEP_PI_STR-SGTXT sy-vline 
WA_KAEP_PI_STR-REFBZ sy-vline 
WA_KAEP_PI_STR-EBELN sy-vline 
WA_KAEP_PI_STR-EBELP sy-vline 
WA_KAEP_PI_STR-EBTXT sy-vline 
WA_KAEP_PI_STR-ZEKKN sy-vline 
WA_KAEP_PI_STR-BTRKL sy-vline 
WA_KAEP_PI_STR-BELTP sy-vline 
WA_KAEP_PI_STR-REFBZ_FI sy-vline      INTO ld_text SEPARATED BY SPACE.

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