ABAP Select data from SAP table RCROP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCROP
*  INTO TABLE @DATA(IT_RCROP2).
*--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_RCROP INDEX 1 INTO DATA(WA_RCROP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCROP>-ANZMA = 1.
<RCROP>-ANZZL = 1.
<RCROP>-ARBEI = 1.
<RCROP>-ARBEH = 1.
<RCROP>-BMSCH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCROP-DAUNO, sy-vline,
  WA_RCROP-DAUNE, sy-vline,
  WA_RCROP-MGVRG, sy-vline,
  WA_RCROP-MEINH, sy-vline,
  WA_RCROP-SLWID, sy-vline,
  WA_RCROP-SPLIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCROP 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_RCROP 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_RCROP INTO WA_RCROP.


*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 ARBEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCROP-ARBEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCROP-ARBEH.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field USE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCROP-USE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCROP-USE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCROP-USE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCROP-USE05.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field QRASTEREH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCROP-QRASTEREH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCROP-QRASTEREH.
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_RCROP_STR, 
ANZMA TYPE STRING,
ANZZL TYPE STRING,
ARBEI TYPE STRING,
ARBEH TYPE STRING,
BMSCH TYPE STRING,
DAUNO TYPE STRING,
DAUNE TYPE STRING,
MGVRG TYPE STRING,
MEINH TYPE STRING,
SLWID TYPE STRING,
SPLIM TYPE STRING,
USR04 TYPE STRING,
USE04 TYPE STRING,
USR05 TYPE STRING,
USE05 TYPE STRING,
ZMERH TYPE STRING,
ZEIER TYPE STRING,
ZLPRO TYPE STRING,
ZEILP TYPE STRING,
ZLMAX TYPE STRING,
ZEILM TYPE STRING,
ZWNOR TYPE STRING,
ZEIWN TYPE STRING,
QRASTZEHT TYPE STRING,
QRASTZFAK TYPE STRING,
QRASTEREH TYPE STRING,
QRASTMENG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCROP_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_RCROP_STR-ANZMA sy-vline 
WA_RCROP_STR-ANZZL sy-vline 
WA_RCROP_STR-ARBEI sy-vline 
WA_RCROP_STR-ARBEH sy-vline 
WA_RCROP_STR-BMSCH sy-vline 
WA_RCROP_STR-DAUNO sy-vline 
WA_RCROP_STR-DAUNE sy-vline 
WA_RCROP_STR-MGVRG sy-vline 
WA_RCROP_STR-MEINH sy-vline 
WA_RCROP_STR-SLWID sy-vline 
WA_RCROP_STR-SPLIM sy-vline 
WA_RCROP_STR-USR04 sy-vline 
WA_RCROP_STR-USE04 sy-vline 
WA_RCROP_STR-USR05 sy-vline 
WA_RCROP_STR-USE05 sy-vline 
WA_RCROP_STR-ZMERH sy-vline 
WA_RCROP_STR-ZEIER sy-vline 
WA_RCROP_STR-ZLPRO sy-vline 
WA_RCROP_STR-ZEILP sy-vline 
WA_RCROP_STR-ZLMAX sy-vline 
WA_RCROP_STR-ZEILM sy-vline 
WA_RCROP_STR-ZWNOR sy-vline 
WA_RCROP_STR-ZEIWN sy-vline 
WA_RCROP_STR-QRASTZEHT sy-vline 
WA_RCROP_STR-QRASTZFAK sy-vline 
WA_RCROP_STR-QRASTEREH sy-vline 
WA_RCROP_STR-QRASTMENG sy-vline      INTO ld_text SEPARATED BY SPACE.

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