ABAP Select data from SAP table ROTKPI into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROTKPI 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 ROTKPI. 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 ROTKPI 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_ROTKPI TYPE STANDARD TABLE OF ROTKPI,
      WA_ROTKPI TYPE ROTKPI,
      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: <ROTKPI> TYPE ROTKPI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROTKPI
*  INTO TABLE @DATA(IT_ROTKPI2).
*--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_ROTKPI INDEX 1 INTO DATA(WA_ROTKPI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROTKPI>-MANDT = 1.
<ROTKPI>-MATNR = 1.
<ROTKPI>-LENGTH = 1.
<ROTKPI>-DATETO = 1.
<ROTKPI>-DATEFRM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROTKPI-MTBUR_OH, sy-vline,
  WA_ROTKPI-MTBSR_OH, sy-vline,
  WA_ROTKPI-MTBR_OH, sy-vline,
  WA_ROTKPI-MTBF_OH, sy-vline,
  WA_ROTKPI-SI_UNIT_OH, sy-vline,
  WA_ROTKPI-MTBUR_LC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROTKPI 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_ROTKPI 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_ROTKPI INTO WA_ROTKPI.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROTKPI-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROTKPI-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SI_UNIT_OH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROTKPI-SI_UNIT_OH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROTKPI-SI_UNIT_OH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SI_UNIT_LC
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROTKPI-SI_UNIT_LC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROTKPI-SI_UNIT_LC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SI_UNIT_OC
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROTKPI-SI_UNIT_OC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROTKPI-SI_UNIT_OC.
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_ROTKPI_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
LENGTH TYPE STRING,
DATETO TYPE STRING,
DATEFRM TYPE STRING,
MTBUR_OH TYPE STRING,
MTBSR_OH TYPE STRING,
MTBR_OH TYPE STRING,
MTBF_OH TYPE STRING,
SI_UNIT_OH TYPE STRING,
MTBUR_LC TYPE STRING,
MTBSR_LC TYPE STRING,
MTBR_LC TYPE STRING,
MTBF_LC TYPE STRING,
SI_UNIT_LC TYPE STRING,
MTBUR_OC TYPE STRING,
MTBSR_OC TYPE STRING,
MTBR_OC TYPE STRING,
MTBF_OC TYPE STRING,
SI_UNIT_OC TYPE STRING,
CREATED_ON_TIME TYPE STRING,
CREATED_ON_DATE TYPE STRING,
CREATED_BY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROTKPI_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_ROTKPI_STR-MANDT sy-vline 
WA_ROTKPI_STR-MATNR sy-vline 
WA_ROTKPI_STR-LENGTH sy-vline 
WA_ROTKPI_STR-DATETO sy-vline 
WA_ROTKPI_STR-DATEFRM sy-vline 
WA_ROTKPI_STR-MTBUR_OH sy-vline 
WA_ROTKPI_STR-MTBSR_OH sy-vline 
WA_ROTKPI_STR-MTBR_OH sy-vline 
WA_ROTKPI_STR-MTBF_OH sy-vline 
WA_ROTKPI_STR-SI_UNIT_OH sy-vline 
WA_ROTKPI_STR-MTBUR_LC sy-vline 
WA_ROTKPI_STR-MTBSR_LC sy-vline 
WA_ROTKPI_STR-MTBR_LC sy-vline 
WA_ROTKPI_STR-MTBF_LC sy-vline 
WA_ROTKPI_STR-SI_UNIT_LC sy-vline 
WA_ROTKPI_STR-MTBUR_OC sy-vline 
WA_ROTKPI_STR-MTBSR_OC sy-vline 
WA_ROTKPI_STR-MTBR_OC sy-vline 
WA_ROTKPI_STR-MTBF_OC sy-vline 
WA_ROTKPI_STR-SI_UNIT_OC sy-vline 
WA_ROTKPI_STR-CREATED_ON_TIME sy-vline 
WA_ROTKPI_STR-CREATED_ON_DATE sy-vline 
WA_ROTKPI_STR-CREATED_BY sy-vline      INTO ld_text SEPARATED BY SPACE.

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