ABAP Select data from SAP table RISMP0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RISMP0 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 RISMP0. 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 RISMP0 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_RISMP0 TYPE STANDARD TABLE OF RISMP0,
      WA_RISMP0 TYPE RISMP0,
      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: <RISMP0> TYPE RISMP0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RISMP0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RISMP0
  INTO TABLE IT_RISMP0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RISMP0
*  INTO TABLE @DATA(IT_RISMP02).
*--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_RISMP0 INDEX 1 INTO DATA(WA_RISMP02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RISMP0 ASSIGNING <RISMP0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RISMP0>-COPER = 1.
<RISMP0>-ISMTP = 1.
<RISMP0>-APPLAR = 1.
<RISMP0>-ISMART = 1.
<RISMP0>-VALDTFRM = 1.

ENDLOOP.

LOOP AT IT_RISMP0 INTO WA_RISMP0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RISMP0-VALDTTO, sy-vline,
  WA_RISMP0-ISMCAT, sy-vline,
  WA_RISMP0-ISMGRP, sy-vline,
  WA_RISMP0-ISMCOD, sy-vline,
  WA_RISMP0-ARTPR, sy-vline,
  WA_RISMP0-PRIOK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RISMP0 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_RISMP0 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_RISMP0 INTO WA_RISMP0.


*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_RISMP0_STR, 
COPER TYPE STRING,
ISMTP TYPE STRING,
APPLAR TYPE STRING,
ISMART TYPE STRING,
VALDTFRM TYPE STRING,
VALDTTO TYPE STRING,
ISMCAT TYPE STRING,
ISMGRP TYPE STRING,
ISMCOD TYPE STRING,
ARTPR TYPE STRING,
PRIOK TYPE STRING,
ISMST TYPE STRING,
RBNR TYPE STRING,
OPCAT TYPE STRING,
PRCAT TYPE STRING,
CACAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RISMP0_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_RISMP0_STR-COPER sy-vline 
WA_RISMP0_STR-ISMTP sy-vline 
WA_RISMP0_STR-APPLAR sy-vline 
WA_RISMP0_STR-ISMART sy-vline 
WA_RISMP0_STR-VALDTFRM sy-vline 
WA_RISMP0_STR-VALDTTO sy-vline 
WA_RISMP0_STR-ISMCAT sy-vline 
WA_RISMP0_STR-ISMGRP sy-vline 
WA_RISMP0_STR-ISMCOD sy-vline 
WA_RISMP0_STR-ARTPR sy-vline 
WA_RISMP0_STR-PRIOK sy-vline 
WA_RISMP0_STR-ISMST sy-vline 
WA_RISMP0_STR-RBNR sy-vline 
WA_RISMP0_STR-OPCAT sy-vline 
WA_RISMP0_STR-PRCAT sy-vline 
WA_RISMP0_STR-CACAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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