ABAP Select data from SAP table INCMD_GRPITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INCMD_GRPITEM
*  INTO TABLE @DATA(IT_INCMD_GRPITEM2).
*--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_INCMD_GRPITEM INDEX 1 INTO DATA(WA_INCMD_GRPITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INCMD_GRPITEM>-LOGSYS = 1.
<INCMD_GRPITEM>-ICNO = 1.
<INCMD_GRPITEM>-SEQNO = 1.
<INCMD_GRPITEM>-PRECMAT = 1.
<INCMD_GRPITEM>-PRECSYS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INCMD_GRPITEM-PRECLOC, sy-vline,
  WA_INCMD_GRPITEM-PRECWRK, sy-vline,
  WA_INCMD_GRPITEM-PRECBER, sy-vline,
  WA_INCMD_GRPITEM-SUCCMAT, sy-vline,
  WA_INCMD_GRPITEM-SUCCSYS, sy-vline,
  WA_INCMD_GRPITEM-SUCCLOC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INCMD_GRPITEM 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_INCMD_GRPITEM 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_INCMD_GRPITEM INTO WA_INCMD_GRPITEM.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_INCMD_GRPITEM-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INCMD_GRPITEM-LOGSYS.
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_INCMD_GRPITEM_STR, 
LOGSYS TYPE STRING,
ICNO TYPE STRING,
SEQNO TYPE STRING,
PRECMAT TYPE STRING,
PRECSYS TYPE STRING,
PRECLOC TYPE STRING,
PRECWRK TYPE STRING,
PRECBER TYPE STRING,
SUCCMAT TYPE STRING,
SUCCSYS TYPE STRING,
SUCCLOC TYPE STRING,
REPDESC TYPE STRING,
RELTYPE TYPE STRING,
VALIDFR TYPE STRING,
VALIDTO TYPE STRING,
PRECQTY TYPE STRING,
SUCCQTY TYPE STRING,
USEUPFLG TYPE STRING,
USEUPDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INCMD_GRPITEM_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_INCMD_GRPITEM_STR-LOGSYS sy-vline 
WA_INCMD_GRPITEM_STR-ICNO sy-vline 
WA_INCMD_GRPITEM_STR-SEQNO sy-vline 
WA_INCMD_GRPITEM_STR-PRECMAT sy-vline 
WA_INCMD_GRPITEM_STR-PRECSYS sy-vline 
WA_INCMD_GRPITEM_STR-PRECLOC sy-vline 
WA_INCMD_GRPITEM_STR-PRECWRK sy-vline 
WA_INCMD_GRPITEM_STR-PRECBER sy-vline 
WA_INCMD_GRPITEM_STR-SUCCMAT sy-vline 
WA_INCMD_GRPITEM_STR-SUCCSYS sy-vline 
WA_INCMD_GRPITEM_STR-SUCCLOC sy-vline 
WA_INCMD_GRPITEM_STR-REPDESC sy-vline 
WA_INCMD_GRPITEM_STR-RELTYPE sy-vline 
WA_INCMD_GRPITEM_STR-VALIDFR sy-vline 
WA_INCMD_GRPITEM_STR-VALIDTO sy-vline 
WA_INCMD_GRPITEM_STR-PRECQTY sy-vline 
WA_INCMD_GRPITEM_STR-SUCCQTY sy-vline 
WA_INCMD_GRPITEM_STR-USEUPFLG sy-vline 
WA_INCMD_GRPITEM_STR-USEUPDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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