ABAP Select data from SAP table ROIIGMMH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIIGMMH
*  INTO TABLE @DATA(IT_ROIIGMMH2).
*--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_ROIIGMMH INDEX 1 INTO DATA(WA_ROIIGMMH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIIGMMH>-MANDT = 1.
<ROIIGMMH>-GMMNR = 1.
<ROIIGMMH>-ITMSTM = 1.
<ROIIGMMH>-METEV = 1.
<ROIIGMMH>-MCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIIGMMH-MATNR, sy-vline,
  WA_ROIIGMMH-CONFAC, sy-vline,
  WA_ROIIGMMH-BASME, sy-vline,
  WA_ROIIGMMH-KMENGE, sy-vline,
  WA_ROIIGMMH-XMCOUNT, sy-vline,
  WA_ROIIGMMH-XMATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIIGMMH 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_ROIIGMMH 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_ROIIGMMH INTO WA_ROIIGMMH.


*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 GMMNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIIGMMH-GMMNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIIGMMH-GMMNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit MATN1, internal->external for field NEWMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIIGMMH-NEWMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIIGMMH-NEWMAT.
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_ROIIGMMH_STR, 
MANDT TYPE STRING,
GMMNR TYPE STRING,
ITMSTM TYPE STRING,
METEV TYPE STRING,
MCOUNT TYPE STRING,
MATNR TYPE STRING,
CONFAC TYPE STRING,
BASME TYPE STRING,
KMENGE TYPE STRING,
XMCOUNT TYPE STRING,
XMATNR TYPE STRING,
XCONFAC TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAM TYPE STRING,
BLOIND TYPE STRING,
DELIND TYPE STRING,
TICKET_KEY TYPE STRING,
TICKET_ITEM TYPE STRING,
TICKET_VERSION TYPE STRING,
TICKET_PURPOSE TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
KUNNR TYPE STRING,
FTMDAT TYPE STRING,
FTMTIM TYPE STRING,
TTMDAT TYPE STRING,
TTMTIM TYPE STRING,
MDATE TYPE STRING,
MTIME TYPE STRING,
OLDMAT TYPE STRING,
NEWMAT TYPE STRING,
STCOUN TYPE STRING,
ENCOUN TYPE STRING,
OLDVAL TYPE STRING,
NEWVAL TYPE STRING,
OLDCON TYPE STRING,
NEWCON TYPE STRING,
CHKBOX TYPE STRING,
UPD_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIIGMMH_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_ROIIGMMH_STR-MANDT sy-vline 
WA_ROIIGMMH_STR-GMMNR sy-vline 
WA_ROIIGMMH_STR-ITMSTM sy-vline 
WA_ROIIGMMH_STR-METEV sy-vline 
WA_ROIIGMMH_STR-MCOUNT sy-vline 
WA_ROIIGMMH_STR-MATNR sy-vline 
WA_ROIIGMMH_STR-CONFAC sy-vline 
WA_ROIIGMMH_STR-BASME sy-vline 
WA_ROIIGMMH_STR-KMENGE sy-vline 
WA_ROIIGMMH_STR-XMCOUNT sy-vline 
WA_ROIIGMMH_STR-XMATNR sy-vline 
WA_ROIIGMMH_STR-XCONFAC sy-vline 
WA_ROIIGMMH_STR-ERDAT sy-vline 
WA_ROIIGMMH_STR-ERZEIT sy-vline 
WA_ROIIGMMH_STR-ERNAM sy-vline 
WA_ROIIGMMH_STR-AEDAT sy-vline 
WA_ROIIGMMH_STR-AEZEIT sy-vline 
WA_ROIIGMMH_STR-AENAM sy-vline 
WA_ROIIGMMH_STR-BLOIND sy-vline 
WA_ROIIGMMH_STR-DELIND sy-vline 
WA_ROIIGMMH_STR-TICKET_KEY sy-vline 
WA_ROIIGMMH_STR-TICKET_ITEM sy-vline 
WA_ROIIGMMH_STR-TICKET_VERSION sy-vline 
WA_ROIIGMMH_STR-TICKET_PURPOSE sy-vline 
WA_ROIIGMMH_STR-MENGE sy-vline 
WA_ROIIGMMH_STR-MEINS sy-vline 
WA_ROIIGMMH_STR-KUNNR sy-vline 
WA_ROIIGMMH_STR-FTMDAT sy-vline 
WA_ROIIGMMH_STR-FTMTIM sy-vline 
WA_ROIIGMMH_STR-TTMDAT sy-vline 
WA_ROIIGMMH_STR-TTMTIM sy-vline 
WA_ROIIGMMH_STR-MDATE sy-vline 
WA_ROIIGMMH_STR-MTIME sy-vline 
WA_ROIIGMMH_STR-OLDMAT sy-vline 
WA_ROIIGMMH_STR-NEWMAT sy-vline 
WA_ROIIGMMH_STR-STCOUN sy-vline 
WA_ROIIGMMH_STR-ENCOUN sy-vline 
WA_ROIIGMMH_STR-OLDVAL sy-vline 
WA_ROIIGMMH_STR-NEWVAL sy-vline 
WA_ROIIGMMH_STR-OLDCON sy-vline 
WA_ROIIGMMH_STR-NEWCON sy-vline 
WA_ROIIGMMH_STR-CHKBOX sy-vline 
WA_ROIIGMMH_STR-UPD_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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