ABAP Select data from SAP table RFPCD_PREP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFPCD_PREP
*  INTO TABLE @DATA(IT_RFPCD_PREP2).
*--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_RFPCD_PREP INDEX 1 INTO DATA(WA_RFPCD_PREP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFPCD_PREP>-GPART = 1.
<RFPCD_PREP>-VKONT = 1.
<RFPCD_PREP>-VTREF = 1.
<RFPCD_PREP>-BUKRS = 1.
<RFPCD_PREP>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFPCD_PREP-OPBEL, sy-vline,
  WA_RFPCD_PREP-XBLNR, sy-vline,
  WA_RFPCD_PREP-FAEDN, sy-vline,
  WA_RFPCD_PREP-PYDAT, sy-vline,
  WA_RFPCD_PREP-APPLK, sy-vline,
  WA_RFPCD_PREP-CDISS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFPCD_PREP 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_RFPCD_PREP 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_RFPCD_PREP INTO WA_RFPCD_PREP.


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

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

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

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

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

*Conversion exit SPDEV, internal->external for field TDDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_RFPCD_PREP-TDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFPCD_PREP-TDDEST.
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_RFPCD_PREP_STR, 
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
OPBEL TYPE STRING,
XBLNR TYPE STRING,
FAEDN TYPE STRING,
PYDAT TYPE STRING,
APPLK TYPE STRING,
CDISS TYPE STRING,
FORMKEY TYPE STRING,
TDDEST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFPCD_PREP_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_RFPCD_PREP_STR-GPART sy-vline 
WA_RFPCD_PREP_STR-VKONT sy-vline 
WA_RFPCD_PREP_STR-VTREF sy-vline 
WA_RFPCD_PREP_STR-BUKRS sy-vline 
WA_RFPCD_PREP_STR-WAERS sy-vline 
WA_RFPCD_PREP_STR-OPBEL sy-vline 
WA_RFPCD_PREP_STR-XBLNR sy-vline 
WA_RFPCD_PREP_STR-FAEDN sy-vline 
WA_RFPCD_PREP_STR-PYDAT sy-vline 
WA_RFPCD_PREP_STR-APPLK sy-vline 
WA_RFPCD_PREP_STR-CDISS sy-vline 
WA_RFPCD_PREP_STR-FORMKEY sy-vline 
WA_RFPCD_PREP_STR-TDDEST sy-vline      INTO ld_text SEPARATED BY SPACE.

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