ABAP Select data from SAP table ROIISOCMKN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIISOCMKN
*  INTO TABLE @DATA(IT_ROIISOCMKN2).
*--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_ROIISOCMKN INDEX 1 INTO DATA(WA_ROIISOCMKN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIISOCMKN>-MANDT = 1.
<ROIISOCMKN>-KUNNR = 1.
<ROIISOCMKN>-SEQNR = 1.
<ROIISOCMKN>-SOCNR = 1.
<ROIISOCMKN>-FTMDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIISOCMKN-FTMTIM, sy-vline,
  WA_ROIISOCMKN-TTMDAT, sy-vline,
  WA_ROIISOCMKN-TTMTIM, sy-vline,
  WA_ROIISOCMKN-MATNR, sy-vline,
  WA_ROIISOCMKN-MATKL, sy-vline,
  WA_ROIISOCMKN-CHARG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIISOCMKN 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_ROIISOCMKN 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_ROIISOCMKN INTO WA_ROIISOCMKN.


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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISOCMKN-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISOCMKN-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISOCMKN-VOLUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISOCMKN-VOLUN.
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_ROIISOCMKN_STR, 
MANDT TYPE STRING,
KUNNR TYPE STRING,
SEQNR TYPE STRING,
SOCNR TYPE STRING,
FTMDAT TYPE STRING,
FTMTIM TYPE STRING,
TTMDAT TYPE STRING,
TTMTIM TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
CHARG TYPE STRING,
BWTAR TYPE STRING,
BSTAR TYPE STRING,
NS_STOCK TYPE STRING,
SO_STOCK TYPE STRING,
VC_STOCK TYPE STRING,
PR_STOCK TYPE STRING,
MEINS TYPE STRING,
UOMGR TYPE STRING,
UMRSL TYPE STRING,
KAPAZ_IND TYPE STRING,
VOLUN TYPE STRING,
PLD_TTMSTM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIISOCMKN_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_ROIISOCMKN_STR-MANDT sy-vline 
WA_ROIISOCMKN_STR-KUNNR sy-vline 
WA_ROIISOCMKN_STR-SEQNR sy-vline 
WA_ROIISOCMKN_STR-SOCNR sy-vline 
WA_ROIISOCMKN_STR-FTMDAT sy-vline 
WA_ROIISOCMKN_STR-FTMTIM sy-vline 
WA_ROIISOCMKN_STR-TTMDAT sy-vline 
WA_ROIISOCMKN_STR-TTMTIM sy-vline 
WA_ROIISOCMKN_STR-MATNR sy-vline 
WA_ROIISOCMKN_STR-MATKL sy-vline 
WA_ROIISOCMKN_STR-CHARG sy-vline 
WA_ROIISOCMKN_STR-BWTAR sy-vline 
WA_ROIISOCMKN_STR-BSTAR sy-vline 
WA_ROIISOCMKN_STR-NS_STOCK sy-vline 
WA_ROIISOCMKN_STR-SO_STOCK sy-vline 
WA_ROIISOCMKN_STR-VC_STOCK sy-vline 
WA_ROIISOCMKN_STR-PR_STOCK sy-vline 
WA_ROIISOCMKN_STR-MEINS sy-vline 
WA_ROIISOCMKN_STR-UOMGR sy-vline 
WA_ROIISOCMKN_STR-UMRSL sy-vline 
WA_ROIISOCMKN_STR-KAPAZ_IND sy-vline 
WA_ROIISOCMKN_STR-VOLUN sy-vline 
WA_ROIISOCMKN_STR-PLD_TTMSTM sy-vline      INTO ld_text SEPARATED BY SPACE.

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