ABAP Select data from SAP table SMSRS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SMSRS
*  INTO TABLE @DATA(IT_SMSRS2).
*--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_SMSRS INDEX 1 INTO DATA(WA_SMSRS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SMSRS>-MATNR = 1.
<SMSRS>-WERKS = 1.
<SMSRS>-SOBKZ = 1.
<SMSRS>-LIFNR = 1.
<SMSRS>-PSPNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SMSRS-RMSRS, sy-vline,
  WA_SMSRS-XDBUP, sy-vline,
  WA_SMSRS-LFGJA, sy-vline,
  WA_SMSRS-LFMON, sy-vline,
  WA_SMSRS-RSLAB, sy-vline,
  WA_SMSRS-RSINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SMSRS 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_SMSRS 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_SMSRS INTO WA_SMSRS.


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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_SMSRS-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSRS-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LFGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_SMSRS-LFGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSRS-LFGJA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RSGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_SMSRS-RSGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSRS-RSGJA.
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_SMSRS_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
SOBKZ TYPE STRING,
LIFNR TYPE STRING,
PSPNR TYPE STRING,
RMSRS TYPE STRING,
XDBUP TYPE STRING,
LFGJA TYPE STRING,
LFMON TYPE STRING,
RSLAB TYPE STRING,
RSINS TYPE STRING,
RSEIN TYPE STRING,
RSLAB_OLD TYPE STRING,
RSINS_OLD TYPE STRING,
RSEIN_OLD TYPE STRING,
KZBWS TYPE STRING,
RSTRA TYPE STRING,
RSTRA_OLD TYPE STRING,
RSVTR TYPE STRING,
RSVTR_OLD TYPE STRING,
RMSRSH TYPE STRING,
RSLFM TYPE STRING,
RSGJA TYPE STRING,
RSRUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SMSRS_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_SMSRS_STR-MATNR sy-vline 
WA_SMSRS_STR-WERKS sy-vline 
WA_SMSRS_STR-SOBKZ sy-vline 
WA_SMSRS_STR-LIFNR sy-vline 
WA_SMSRS_STR-PSPNR sy-vline 
WA_SMSRS_STR-RMSRS sy-vline 
WA_SMSRS_STR-XDBUP sy-vline 
WA_SMSRS_STR-LFGJA sy-vline 
WA_SMSRS_STR-LFMON sy-vline 
WA_SMSRS_STR-RSLAB sy-vline 
WA_SMSRS_STR-RSINS sy-vline 
WA_SMSRS_STR-RSEIN sy-vline 
WA_SMSRS_STR-RSLAB_OLD sy-vline 
WA_SMSRS_STR-RSINS_OLD sy-vline 
WA_SMSRS_STR-RSEIN_OLD sy-vline 
WA_SMSRS_STR-KZBWS sy-vline 
WA_SMSRS_STR-RSTRA sy-vline 
WA_SMSRS_STR-RSTRA_OLD sy-vline 
WA_SMSRS_STR-RSVTR sy-vline 
WA_SMSRS_STR-RSVTR_OLD sy-vline 
WA_SMSRS_STR-RMSRSH sy-vline 
WA_SMSRS_STR-RSLFM sy-vline 
WA_SMSRS_STR-RSGJA sy-vline 
WA_SMSRS_STR-RSRUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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