ABAP Select data from SAP table RCEVZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCEVZ
*  INTO TABLE @DATA(IT_RCEVZ2).
*--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_RCEVZ INDEX 1 INTO DATA(WA_RCEVZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCEVZ>-MANDT = 1.
<RCEVZ>-BLUB1 = 1.
<RCEVZ>-BLUB2 = 1.
<RCEVZ>-BLUB3 = 1.
<RCEVZ>-BLUB4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCEVZ-BLUB5, sy-vline,
  WA_RCEVZ-ENTRY_ACT, sy-vline,
  WA_RCEVZ-ENTRIES, sy-vline,
  WA_RCEVZ-WERKS, sy-vline,
  WA_RCEVZ-ARBPL, sy-vline,
  WA_RCEVZ-AKTOP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCEVZ 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_RCEVZ 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_RCEVZ INTO WA_RCEVZ.


*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_RCEVZ-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCEVZ-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCEVZ-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCEVZ-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCEVZ-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCEVZ-UVORN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MSEH1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCEVZ-MSEH1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCEVZ-MSEH1.
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_RCEVZ_STR, 
MANDT TYPE STRING,
BLUB1 TYPE STRING,
BLUB2 TYPE STRING,
BLUB3 TYPE STRING,
BLUB4 TYPE STRING,
BLUB5 TYPE STRING,
ENTRY_ACT TYPE STRING,
ENTRIES TYPE STRING,
WERKS TYPE STRING,
ARBPL TYPE STRING,
AKTOP TYPE STRING,
MATNR TYPE STRING,
PLNNR TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
ASWKZ TYPE STRING,
VRFNR TYPE STRING,
KTEX1 TYPE STRING,
MARK TYPE STRING,
ANZDF TYPE STRING,
ANZS TYPE STRING,
ANZI TYPE STRING,
TOPNR TYPE STRING,
METNR TYPE STRING,
MZART TYPE STRING,
ZEATX TYPE STRING,
PAWRT TYPE STRING,
MSEHI TYPE STRING,
FOMNR TYPE STRING,
ARBAV TYPE STRING,
VRFAV TYPE STRING,
METAV TYPE STRING,
FOMAV TYPE STRING,
TABAV TYPE STRING,
MENAV TYPE STRING,
TTEX1 TYPE STRING,
TTEX2 TYPE STRING,
TTEX3 TYPE STRING,
ZEAR1 TYPE STRING,
PAWR1 TYPE STRING,
MSEH1 TYPE STRING,
AMANU TYPE STRING,
AAUTO TYPE STRING,
PIDTX TYPE STRING,
PIDTL TYPE STRING,
SUMW1 TYPE STRING,
CAPVP TYPE STRING,
SUMW2 TYPE STRING,
PROZENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCEVZ_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_RCEVZ_STR-MANDT sy-vline 
WA_RCEVZ_STR-BLUB1 sy-vline 
WA_RCEVZ_STR-BLUB2 sy-vline 
WA_RCEVZ_STR-BLUB3 sy-vline 
WA_RCEVZ_STR-BLUB4 sy-vline 
WA_RCEVZ_STR-BLUB5 sy-vline 
WA_RCEVZ_STR-ENTRY_ACT sy-vline 
WA_RCEVZ_STR-ENTRIES sy-vline 
WA_RCEVZ_STR-WERKS sy-vline 
WA_RCEVZ_STR-ARBPL sy-vline 
WA_RCEVZ_STR-AKTOP sy-vline 
WA_RCEVZ_STR-MATNR sy-vline 
WA_RCEVZ_STR-PLNNR sy-vline 
WA_RCEVZ_STR-VORNR sy-vline 
WA_RCEVZ_STR-UVORN sy-vline 
WA_RCEVZ_STR-ASWKZ sy-vline 
WA_RCEVZ_STR-VRFNR sy-vline 
WA_RCEVZ_STR-KTEX1 sy-vline 
WA_RCEVZ_STR-MARK sy-vline 
WA_RCEVZ_STR-ANZDF sy-vline 
WA_RCEVZ_STR-ANZS sy-vline 
WA_RCEVZ_STR-ANZI sy-vline 
WA_RCEVZ_STR-TOPNR sy-vline 
WA_RCEVZ_STR-METNR sy-vline 
WA_RCEVZ_STR-MZART sy-vline 
WA_RCEVZ_STR-ZEATX sy-vline 
WA_RCEVZ_STR-PAWRT sy-vline 
WA_RCEVZ_STR-MSEHI sy-vline 
WA_RCEVZ_STR-FOMNR sy-vline 
WA_RCEVZ_STR-ARBAV sy-vline 
WA_RCEVZ_STR-VRFAV sy-vline 
WA_RCEVZ_STR-METAV sy-vline 
WA_RCEVZ_STR-FOMAV sy-vline 
WA_RCEVZ_STR-TABAV sy-vline 
WA_RCEVZ_STR-MENAV sy-vline 
WA_RCEVZ_STR-TTEX1 sy-vline 
WA_RCEVZ_STR-TTEX2 sy-vline 
WA_RCEVZ_STR-TTEX3 sy-vline 
WA_RCEVZ_STR-ZEAR1 sy-vline 
WA_RCEVZ_STR-PAWR1 sy-vline 
WA_RCEVZ_STR-MSEH1 sy-vline 
WA_RCEVZ_STR-AMANU sy-vline 
WA_RCEVZ_STR-AAUTO sy-vline 
WA_RCEVZ_STR-PIDTX sy-vline 
WA_RCEVZ_STR-PIDTL sy-vline 
WA_RCEVZ_STR-SUMW1 sy-vline 
WA_RCEVZ_STR-CAPVP sy-vline 
WA_RCEVZ_STR-SUMW2 sy-vline 
WA_RCEVZ_STR-PROZENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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