ABAP Select data from SAP table CLMRSTDEX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLMRSTDEX
*  INTO TABLE @DATA(IT_CLMRSTDEX2).
*--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_CLMRSTDEX INDEX 1 INTO DATA(WA_CLMRSTDEX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLMRSTDEX>-MANDT = 1.
<CLMRSTDEX>-LASTMILEROUTESTOPUUID = 1.
<CLMRSTDEX>-LASTMILEROUTEUUID = 1.
<CLMRSTDEX>-LASTMILEROUTESTOPTYPE = 1.
<CLMRSTDEX>-LSTMIROUTESTOPPROCESSINGSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLMRSTDEX-SHIPTOPARTY, sy-vline,
  WA_CLMRSTDEX-LASTMILEROUTESTOP, sy-vline,
  WA_CLMRSTDEX-LASTMILEROUTESTAGE, sy-vline,
  WA_CLMRSTDEX-LASTMILEROUTESTOPSEQUENCEVALUE, sy-vline,
  WA_CLMRSTDEX-TRANSPORDSTOPLOCATION, sy-vline,
  WA_CLMRSTDEX-TRANSPORDREQARRIVALDTETME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CLMRSTDEX 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_CLMRSTDEX 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_CLMRSTDEX INTO WA_CLMRSTDEX.


*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 CUNIT, internal->external for field LSTMIRTEODOMETERUNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CLMRSTDEX-LSTMIRTEODOMETERUNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLMRSTDEX-LSTMIRTEODOMETERUNITOFMEASURE.
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_CLMRSTDEX_STR, 
MANDT TYPE STRING,
LASTMILEROUTESTOPUUID TYPE STRING,
LASTMILEROUTEUUID TYPE STRING,
LASTMILEROUTESTOPTYPE TYPE STRING,
LSTMIROUTESTOPPROCESSINGSTATUS TYPE STRING,
SHIPTOPARTY TYPE STRING,
LASTMILEROUTESTOP TYPE STRING,
LASTMILEROUTESTAGE TYPE STRING,
LASTMILEROUTESTOPSEQUENCEVALUE TYPE STRING,
TRANSPORDSTOPLOCATION TYPE STRING,
TRANSPORDREQARRIVALDTETME TYPE STRING,
TRANSPORDREQDEPARTUREDTETME TYPE STRING,
TRANSPORDARRIVALDATETIME TYPE STRING,
TRANSPORDDEPARTUREDATETIME TYPE STRING,
LSTMIROUTESTOPODOMETERQUANTITY TYPE STRING,
LSTMIRTEODOMETERUNITOFMEASURE TYPE STRING,
LASTMILEROUTECLERKNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLMRSTDEX_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_CLMRSTDEX_STR-MANDT sy-vline 
WA_CLMRSTDEX_STR-LASTMILEROUTESTOPUUID sy-vline 
WA_CLMRSTDEX_STR-LASTMILEROUTEUUID sy-vline 
WA_CLMRSTDEX_STR-LASTMILEROUTESTOPTYPE sy-vline 
WA_CLMRSTDEX_STR-LSTMIROUTESTOPPROCESSINGSTATUS sy-vline 
WA_CLMRSTDEX_STR-SHIPTOPARTY sy-vline 
WA_CLMRSTDEX_STR-LASTMILEROUTESTOP sy-vline 
WA_CLMRSTDEX_STR-LASTMILEROUTESTAGE sy-vline 
WA_CLMRSTDEX_STR-LASTMILEROUTESTOPSEQUENCEVALUE sy-vline 
WA_CLMRSTDEX_STR-TRANSPORDSTOPLOCATION sy-vline 
WA_CLMRSTDEX_STR-TRANSPORDREQARRIVALDTETME sy-vline 
WA_CLMRSTDEX_STR-TRANSPORDREQDEPARTUREDTETME sy-vline 
WA_CLMRSTDEX_STR-TRANSPORDARRIVALDATETIME sy-vline 
WA_CLMRSTDEX_STR-TRANSPORDDEPARTUREDATETIME sy-vline 
WA_CLMRSTDEX_STR-LSTMIROUTESTOPODOMETERQUANTITY sy-vline 
WA_CLMRSTDEX_STR-LSTMIRTEODOMETERUNITOFMEASURE sy-vline 
WA_CLMRSTDEX_STR-LASTMILEROUTECLERKNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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