ABAP Select data from SAP table REBDC_MEAS_CALC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REBDC_MEAS_CALC
*  INTO TABLE @DATA(IT_REBDC_MEAS_CALC2).
*--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_REBDC_MEAS_CALC INDEX 1 INTO DATA(WA_REBDC_MEAS_CALC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REBDC_MEAS_CALC>-MANDT = 1.
<REBDC_MEAS_CALC>-MEASCALC = 1.
<REBDC_MEAS_CALC>-ROTYPE = 1.
<REBDC_MEAS_CALC>-USAGETYPE = 1.
<REBDC_MEAS_CALC>-CALCTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REBDC_MEAS_CALC-AOTYPE, sy-vline,
  WA_REBDC_MEAS_CALC-ENTRYNUMBER, sy-vline,
  WA_REBDC_MEAS_CALC-MEASSRC, sy-vline,
  WA_REBDC_MEAS_CALC-MEASCALCSRC, sy-vline,
  WA_REBDC_MEAS_CALC-ROUNDTYPE, sy-vline,
  WA_REBDC_MEAS_CALC-ROUNDDECIMAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REBDC_MEAS_CALC 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_REBDC_MEAS_CALC 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_REBDC_MEAS_CALC INTO WA_REBDC_MEAS_CALC.


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

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

*Conversion exit ALPHA, internal->external for field MEASCALCSRC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REBDC_MEAS_CALC-MEASCALCSRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REBDC_MEAS_CALC-MEASCALCSRC.
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_REBDC_MEAS_CALC_STR, 
MANDT TYPE STRING,
MEASCALC TYPE STRING,
ROTYPE TYPE STRING,
USAGETYPE TYPE STRING,
CALCTYPE TYPE STRING,
AOTYPE TYPE STRING,
ENTRYNUMBER TYPE STRING,
MEASSRC TYPE STRING,
MEASCALCSRC TYPE STRING,
ROUNDTYPE TYPE STRING,
ROUNDDECIMAL TYPE STRING,
USEACTUALUSAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REBDC_MEAS_CALC_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_REBDC_MEAS_CALC_STR-MANDT sy-vline 
WA_REBDC_MEAS_CALC_STR-MEASCALC sy-vline 
WA_REBDC_MEAS_CALC_STR-ROTYPE sy-vline 
WA_REBDC_MEAS_CALC_STR-USAGETYPE sy-vline 
WA_REBDC_MEAS_CALC_STR-CALCTYPE sy-vline 
WA_REBDC_MEAS_CALC_STR-AOTYPE sy-vline 
WA_REBDC_MEAS_CALC_STR-ENTRYNUMBER sy-vline 
WA_REBDC_MEAS_CALC_STR-MEASSRC sy-vline 
WA_REBDC_MEAS_CALC_STR-MEASCALCSRC sy-vline 
WA_REBDC_MEAS_CALC_STR-ROUNDTYPE sy-vline 
WA_REBDC_MEAS_CALC_STR-ROUNDDECIMAL sy-vline 
WA_REBDC_MEAS_CALC_STR-USEACTUALUSAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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