ABAP Select data from SAP table RMCSNEUA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMCSNEUA
*  INTO TABLE @DATA(IT_RMCSNEUA2).
*--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_RMCSNEUA INDEX 1 INTO DATA(WA_RMCSNEUA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMCSNEUA>-VRSIO = 1.
<RMCSNEUA>-LAUFNAME = 1.
<RMCSNEUA>-NEULAUF = 1.
<RMCSNEUA>-SPERREN = 1.
<RMCSNEUA>-PARTSYST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMCSNEUA-DATUM, sy-vline,
  WA_RMCSNEUA-UHRZEIT, sy-vline,
  WA_RMCSNEUA-CHECKS021, sy-vline,
  WA_RMCSNEUA-ERWEITERT, sy-vline,
  WA_RMCSNEUA-F_STAFO, sy-vline,
  WA_RMCSNEUA-F_BELUPD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMCSNEUA 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_RMCSNEUA 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_RMCSNEUA INTO WA_RMCSNEUA.


*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_RMCSNEUA_STR, 
VRSIO TYPE STRING,
LAUFNAME TYPE STRING,
NEULAUF TYPE STRING,
SPERREN TYPE STRING,
PARTSYST TYPE STRING,
DATUM TYPE STRING,
UHRZEIT TYPE STRING,
CHECKS021 TYPE STRING,
ERWEITERT TYPE STRING,
F_STAFO TYPE STRING,
F_BELUPD TYPE STRING,
F_DFAULT TYPE STRING,
F_NEUAPSYS TYPE STRING,
NEUA_DCIDX TYPE STRING,
SCRAP TYPE STRING,
NEWBW TYPE STRING,
DETAIL TYPE STRING,
PF TYPE STRING,
FLG_INI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMCSNEUA_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_RMCSNEUA_STR-VRSIO sy-vline 
WA_RMCSNEUA_STR-LAUFNAME sy-vline 
WA_RMCSNEUA_STR-NEULAUF sy-vline 
WA_RMCSNEUA_STR-SPERREN sy-vline 
WA_RMCSNEUA_STR-PARTSYST sy-vline 
WA_RMCSNEUA_STR-DATUM sy-vline 
WA_RMCSNEUA_STR-UHRZEIT sy-vline 
WA_RMCSNEUA_STR-CHECKS021 sy-vline 
WA_RMCSNEUA_STR-ERWEITERT sy-vline 
WA_RMCSNEUA_STR-F_STAFO sy-vline 
WA_RMCSNEUA_STR-F_BELUPD sy-vline 
WA_RMCSNEUA_STR-F_DFAULT sy-vline 
WA_RMCSNEUA_STR-F_NEUAPSYS sy-vline 
WA_RMCSNEUA_STR-NEUA_DCIDX sy-vline 
WA_RMCSNEUA_STR-SCRAP sy-vline 
WA_RMCSNEUA_STR-NEWBW sy-vline 
WA_RMCSNEUA_STR-DETAIL sy-vline 
WA_RMCSNEUA_STR-PF sy-vline 
WA_RMCSNEUA_STR-FLG_INI sy-vline      INTO ld_text SEPARATED BY SPACE.

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