ABAP Select data from SAP table RFM_ST_PICK_REQI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFM_ST_PICK_REQI
*  INTO TABLE @DATA(IT_RFM_ST_PICK_REQI2).
*--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_RFM_ST_PICK_REQI INDEX 1 INTO DATA(WA_RFM_ST_PICK_REQI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFM_ST_PICK_REQI>-MANDT = 1.
<RFM_ST_PICK_REQI>-STORE = 1.
<RFM_ST_PICK_REQI>-STOREPICKINGREQUEST = 1.
<RFM_ST_PICK_REQI>-STOREPICKINGREQUESTITEM = 1.
<RFM_ST_PICK_REQI>-PRODUCT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFM_ST_PICK_REQI-REQUESTEDQUANTITY, sy-vline,
  WA_RFM_ST_PICK_REQI-PRODUCTPICKEDQUANTITY, sy-vline,
  WA_RFM_ST_PICK_REQI-UNITOFMEASURE, sy-vline,
  WA_RFM_ST_PICK_REQI-STOREPICKINGREQUESTITEMSTATUS, sy-vline,
  WA_RFM_ST_PICK_REQI-REFERENCESTOREPICKUPORDER, sy-vline,
  WA_RFM_ST_PICK_REQI-REFERENCESTOREPICKUPORDERITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFM_ST_PICK_REQI 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_RFM_ST_PICK_REQI 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_RFM_ST_PICK_REQI INTO WA_RFM_ST_PICK_REQI.


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

*Conversion exit MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RFM_ST_PICK_REQI-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_ST_PICK_REQI-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field REFERENCESTOREPICKUPORDERITEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFM_ST_PICK_REQI-REFERENCESTOREPICKUPORDERITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_ST_PICK_REQI-REFERENCESTOREPICKUPORDERITEM.
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_RFM_ST_PICK_REQI_STR, 
MANDT TYPE STRING,
STORE TYPE STRING,
STOREPICKINGREQUEST TYPE STRING,
STOREPICKINGREQUESTITEM TYPE STRING,
PRODUCT TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
PRODUCTPICKEDQUANTITY TYPE STRING,
UNITOFMEASURE TYPE STRING,
STOREPICKINGREQUESTITEMSTATUS TYPE STRING,
REFERENCESTOREPICKUPORDER TYPE STRING,
REFERENCESTOREPICKUPORDERITEM TYPE STRING,
STOREITEMOVERALLSTATUS TYPE STRING,
DUMMY_PICKREQITEM_INCL_EEW_PS TYPE STRING,
REQUESTEDSTOREPICKINGREQITEM TYPE STRING,
STOREPKNGREQITEMISSUBSTITUTED TYPE STRING,
PRODUCTREMAININGQUANTITY TYPE STRING,
RETAILSTOREPRODISPICKINGCMPLTD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFM_ST_PICK_REQI_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_RFM_ST_PICK_REQI_STR-MANDT sy-vline 
WA_RFM_ST_PICK_REQI_STR-STORE sy-vline 
WA_RFM_ST_PICK_REQI_STR-STOREPICKINGREQUEST sy-vline 
WA_RFM_ST_PICK_REQI_STR-STOREPICKINGREQUESTITEM sy-vline 
WA_RFM_ST_PICK_REQI_STR-PRODUCT sy-vline 
WA_RFM_ST_PICK_REQI_STR-REQUESTEDQUANTITY sy-vline 
WA_RFM_ST_PICK_REQI_STR-PRODUCTPICKEDQUANTITY sy-vline 
WA_RFM_ST_PICK_REQI_STR-UNITOFMEASURE sy-vline 
WA_RFM_ST_PICK_REQI_STR-STOREPICKINGREQUESTITEMSTATUS sy-vline 
WA_RFM_ST_PICK_REQI_STR-REFERENCESTOREPICKUPORDER sy-vline 
WA_RFM_ST_PICK_REQI_STR-REFERENCESTOREPICKUPORDERITEM sy-vline 
WA_RFM_ST_PICK_REQI_STR-STOREITEMOVERALLSTATUS sy-vline 
WA_RFM_ST_PICK_REQI_STR-DUMMY_PICKREQITEM_INCL_EEW_PS sy-vline 
WA_RFM_ST_PICK_REQI_STR-REQUESTEDSTOREPICKINGREQITEM sy-vline 
WA_RFM_ST_PICK_REQI_STR-STOREPKNGREQITEMISSUBSTITUTED sy-vline 
WA_RFM_ST_PICK_REQI_STR-PRODUCTREMAININGQUANTITY sy-vline 
WA_RFM_ST_PICK_REQI_STR-RETAILSTOREPRODISPICKINGCMPLTD sy-vline      INTO ld_text SEPARATED BY SPACE.

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