ABAP Select data from SAP table PIQCA_RFC_FEECALC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCA_RFC_FEECALC
*  INTO TABLE @DATA(IT_PIQCA_RFC_FEECALC2).
*--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_PIQCA_RFC_FEECALC INDEX 1 INTO DATA(WA_PIQCA_RFC_FEECALC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCA_RFC_FEECALC>-MANDT = 1.
<PIQCA_RFC_FEECALC>-PLVAR = 1.
<PIQCA_RFC_FEECALC>-OTYPE = 1.
<PIQCA_RFC_FEECALC>-OBJID = 1.
<PIQCA_RFC_FEECALC>-SUBTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCA_RFC_FEECALC-ISTAT, sy-vline,
  WA_PIQCA_RFC_FEECALC-BEGDA, sy-vline,
  WA_PIQCA_RFC_FEECALC-ENDDA, sy-vline,
  WA_PIQCA_RFC_FEECALC-VARYF, sy-vline,
  WA_PIQCA_RFC_FEECALC-SEQNR, sy-vline,
  WA_PIQCA_RFC_FEECALC-SMFEECAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCA_RFC_FEECALC 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_PIQCA_RFC_FEECALC 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_PIQCA_RFC_FEECALC INTO WA_PIQCA_RFC_FEECALC.


*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 CUNIT, internal->external for field MVUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQCA_RFC_FEECALC-MVUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQCA_RFC_FEECALC-MVUNIT.
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_PIQCA_RFC_FEECALC_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
SMFEECAT TYPE STRING,
SMLEVYCAT TYPE STRING,
REFUNDTYP TYPE STRING,
SMFEEVAL TYPE STRING,
MVUNIT TYPE STRING,
DDSCHED TYPE STRING,
CMSMCATT TYPE STRING,
CMLEVCATT TYPE STRING,
CMREFTYPT TYPE STRING,
CMSCDDSHEDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCA_RFC_FEECALC_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_PIQCA_RFC_FEECALC_STR-MANDT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-PLVAR sy-vline 
WA_PIQCA_RFC_FEECALC_STR-OTYPE sy-vline 
WA_PIQCA_RFC_FEECALC_STR-OBJID sy-vline 
WA_PIQCA_RFC_FEECALC_STR-SUBTY sy-vline 
WA_PIQCA_RFC_FEECALC_STR-ISTAT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-BEGDA sy-vline 
WA_PIQCA_RFC_FEECALC_STR-ENDDA sy-vline 
WA_PIQCA_RFC_FEECALC_STR-VARYF sy-vline 
WA_PIQCA_RFC_FEECALC_STR-SEQNR sy-vline 
WA_PIQCA_RFC_FEECALC_STR-SMFEECAT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-SMLEVYCAT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-REFUNDTYP sy-vline 
WA_PIQCA_RFC_FEECALC_STR-SMFEEVAL sy-vline 
WA_PIQCA_RFC_FEECALC_STR-MVUNIT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-DDSCHED sy-vline 
WA_PIQCA_RFC_FEECALC_STR-CMSMCATT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-CMLEVCATT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-CMREFTYPT sy-vline 
WA_PIQCA_RFC_FEECALC_STR-CMSCDDSHEDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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