ABAP Select data from SAP table RN2PUSH into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2PUSH 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 RN2PUSH. 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 RN2PUSH 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_RN2PUSH TYPE STANDARD TABLE OF RN2PUSH,
      WA_RN2PUSH TYPE RN2PUSH,
      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: <RN2PUSH> TYPE RN2PUSH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2PUSH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2PUSH
  INTO TABLE IT_RN2PUSH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2PUSH
*  INTO TABLE @DATA(IT_RN2PUSH2).
*--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_RN2PUSH INDEX 1 INTO DATA(WA_RN2PUSH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2PUSH ASSIGNING <RN2PUSH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2PUSH>-TWEKZ = 1.
<RN2PUSH>-TAPPE = 1.
<RN2PUSH>-TEINF = 1.
<RN2PUSH>-TMKAL = 1.
<RN2PUSH>-TMKBL = 1.

ENDLOOP.

LOOP AT IT_RN2PUSH INTO WA_RN2PUSH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2PUSH-TMKLO, sy-vline,
  WA_RN2PUSH-TDELE, sy-vline,
  WA_RN2PUSH-TSORT, sy-vline,
  WA_RN2PUSH-TSORD, sy-vline,
  WA_RN2PUSH-TCUT, sy-vline,
  WA_RN2PUSH-TCOPY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2PUSH 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_RN2PUSH 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_RN2PUSH INTO WA_RN2PUSH.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RN2PUSH_STR, 
TWEKZ TYPE STRING,
TAPPE TYPE STRING,
TEINF TYPE STRING,
TMKAL TYPE STRING,
TMKBL TYPE STRING,
TMKLO TYPE STRING,
TDELE TYPE STRING,
TSORT TYPE STRING,
TSORD TYPE STRING,
TCUT TYPE STRING,
TCOPY TYPE STRING,
TEINS TYPE STRING,
TPOSI TYPE STRING,
TPBEG TYPE STRING,
TPUP TYPE STRING,
TPDOW TYPE STRING,
TPEND TYPE STRING,
TDTLB TYPE STRING,
TEXPA TYPE STRING,
TLEFT TYPE STRING,
TRIGHT TYPE STRING,
TRELA TYPE STRING,
TCREL TYPE STRING,
TTREE TYPE STRING,
TADDR TYPE STRING,
TVFAL TYPE STRING,
WDATA TYPE STRING,
PHONE TYPE STRING,
FNAM1 TYPE STRING,
FNAM2 TYPE STRING,
WADDR TYPE STRING,
TCLOS TYPE STRING,
TLEFTT TYPE STRING,
TRIGHTT TYPE STRING,
DICON TYPE STRING,
TMAIL TYPE STRING,
TPROP TYPE STRING,
TWANG TYPE STRING,
TRSHIP TYPE STRING,
PSEUD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2PUSH_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_RN2PUSH_STR-TWEKZ sy-vline 
WA_RN2PUSH_STR-TAPPE sy-vline 
WA_RN2PUSH_STR-TEINF sy-vline 
WA_RN2PUSH_STR-TMKAL sy-vline 
WA_RN2PUSH_STR-TMKBL sy-vline 
WA_RN2PUSH_STR-TMKLO sy-vline 
WA_RN2PUSH_STR-TDELE sy-vline 
WA_RN2PUSH_STR-TSORT sy-vline 
WA_RN2PUSH_STR-TSORD sy-vline 
WA_RN2PUSH_STR-TCUT sy-vline 
WA_RN2PUSH_STR-TCOPY sy-vline 
WA_RN2PUSH_STR-TEINS sy-vline 
WA_RN2PUSH_STR-TPOSI sy-vline 
WA_RN2PUSH_STR-TPBEG sy-vline 
WA_RN2PUSH_STR-TPUP sy-vline 
WA_RN2PUSH_STR-TPDOW sy-vline 
WA_RN2PUSH_STR-TPEND sy-vline 
WA_RN2PUSH_STR-TDTLB sy-vline 
WA_RN2PUSH_STR-TEXPA sy-vline 
WA_RN2PUSH_STR-TLEFT sy-vline 
WA_RN2PUSH_STR-TRIGHT sy-vline 
WA_RN2PUSH_STR-TRELA sy-vline 
WA_RN2PUSH_STR-TCREL sy-vline 
WA_RN2PUSH_STR-TTREE sy-vline 
WA_RN2PUSH_STR-TADDR sy-vline 
WA_RN2PUSH_STR-TVFAL sy-vline 
WA_RN2PUSH_STR-WDATA sy-vline 
WA_RN2PUSH_STR-PHONE sy-vline 
WA_RN2PUSH_STR-FNAM1 sy-vline 
WA_RN2PUSH_STR-FNAM2 sy-vline 
WA_RN2PUSH_STR-WADDR sy-vline 
WA_RN2PUSH_STR-TCLOS sy-vline 
WA_RN2PUSH_STR-TLEFTT sy-vline 
WA_RN2PUSH_STR-TRIGHTT sy-vline 
WA_RN2PUSH_STR-DICON sy-vline 
WA_RN2PUSH_STR-TMAIL sy-vline 
WA_RN2PUSH_STR-TPROP sy-vline 
WA_RN2PUSH_STR-TWANG sy-vline 
WA_RN2PUSH_STR-TRSHIP sy-vline 
WA_RN2PUSH_STR-PSEUD sy-vline      INTO ld_text SEPARATED BY SPACE.

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