ABAP Select data from SAP table ALMSCTYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALMSCTYPE
*  INTO TABLE @DATA(IT_ALMSCTYPE2).
*--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_ALMSCTYPE INDEX 1 INTO DATA(WA_ALMSCTYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALMSCTYPE>-MTSYSID = 1.
<ALMSCTYPE>-MTMCNAME = 1.
<ALMSCTYPE>-MTNUMRANGE = 1.
<ALMSCTYPE>-MTUID = 1.
<ALMSCTYPE>-MTCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALMSCTYPE-MTINDEX, sy-vline,
  WA_ALMSCTYPE-EXTINDEX, sy-vline,
  WA_ALMSCTYPE-CUSTSTAT, sy-vline,
  WA_ALMSCTYPE-RAISEVALUE, sy-vline,
  WA_ALMSCTYPE-RAISESEVER, sy-vline,
  WA_ALMSCTYPE-ACTMSGMODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALMSCTYPE 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_ALMSCTYPE 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_ALMSCTYPE INTO WA_ALMSCTYPE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ALMSCTYPE_STR, 
MTSYSID TYPE STRING,
MTMCNAME TYPE STRING,
MTNUMRANGE TYPE STRING,
MTUID TYPE STRING,
MTCLASS TYPE STRING,
MTINDEX TYPE STRING,
EXTINDEX TYPE STRING,
CUSTSTAT TYPE STRING,
RAISEVALUE TYPE STRING,
RAISESEVER TYPE STRING,
ACTMSGMODE TYPE STRING,
ACTMSGMAXS TYPE STRING,
MAXALPROID TYPE STRING,
KEEPLINTYP TYPE STRING,
KEEPLINMAX TYPE STRING,
CUSGRPNAME TYPE STRING,
MSCGLLID TYPE STRING,
MSCDATE TYPE STRING,
MSCTIME TYPE STRING,
MSCDUMMY TYPE STRING,
VALUEORIG TYPE STRING,
SEVERORIG TYPE STRING,
VALUEFLTRD TYPE STRING,
SEVERFLTRD TYPE STRING,
MANDT TYPE STRING,
USERID TYPE STRING,
MSG TYPE STRING,
MSGCLASS TYPE STRING,
MSGID TYPE STRING,
MSGARG1 TYPE STRING,
ARGTYPE1 TYPE STRING,
MSGARG2 TYPE STRING,
ARGTYPE2 TYPE STRING,
MSGARG3 TYPE STRING,
ARGTYPE3 TYPE STRING,
MSGARG4 TYPE STRING,
ARGTYPE4 TYPE STRING,
MSGTEXT TYPE STRING,
RC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALMSCTYPE_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_ALMSCTYPE_STR-MTSYSID sy-vline 
WA_ALMSCTYPE_STR-MTMCNAME sy-vline 
WA_ALMSCTYPE_STR-MTNUMRANGE sy-vline 
WA_ALMSCTYPE_STR-MTUID sy-vline 
WA_ALMSCTYPE_STR-MTCLASS sy-vline 
WA_ALMSCTYPE_STR-MTINDEX sy-vline 
WA_ALMSCTYPE_STR-EXTINDEX sy-vline 
WA_ALMSCTYPE_STR-CUSTSTAT sy-vline 
WA_ALMSCTYPE_STR-RAISEVALUE sy-vline 
WA_ALMSCTYPE_STR-RAISESEVER sy-vline 
WA_ALMSCTYPE_STR-ACTMSGMODE sy-vline 
WA_ALMSCTYPE_STR-ACTMSGMAXS sy-vline 
WA_ALMSCTYPE_STR-MAXALPROID sy-vline 
WA_ALMSCTYPE_STR-KEEPLINTYP sy-vline 
WA_ALMSCTYPE_STR-KEEPLINMAX sy-vline 
WA_ALMSCTYPE_STR-CUSGRPNAME sy-vline 
WA_ALMSCTYPE_STR-MSCGLLID sy-vline 
WA_ALMSCTYPE_STR-MSCDATE sy-vline 
WA_ALMSCTYPE_STR-MSCTIME sy-vline 
WA_ALMSCTYPE_STR-MSCDUMMY sy-vline 
WA_ALMSCTYPE_STR-VALUEORIG sy-vline 
WA_ALMSCTYPE_STR-SEVERORIG sy-vline 
WA_ALMSCTYPE_STR-VALUEFLTRD sy-vline 
WA_ALMSCTYPE_STR-SEVERFLTRD sy-vline 
WA_ALMSCTYPE_STR-MANDT sy-vline 
WA_ALMSCTYPE_STR-USERID sy-vline 
WA_ALMSCTYPE_STR-MSG sy-vline 
WA_ALMSCTYPE_STR-MSGCLASS sy-vline 
WA_ALMSCTYPE_STR-MSGID sy-vline 
WA_ALMSCTYPE_STR-MSGARG1 sy-vline 
WA_ALMSCTYPE_STR-ARGTYPE1 sy-vline 
WA_ALMSCTYPE_STR-MSGARG2 sy-vline 
WA_ALMSCTYPE_STR-ARGTYPE2 sy-vline 
WA_ALMSCTYPE_STR-MSGARG3 sy-vline 
WA_ALMSCTYPE_STR-ARGTYPE3 sy-vline 
WA_ALMSCTYPE_STR-MSGARG4 sy-vline 
WA_ALMSCTYPE_STR-ARGTYPE4 sy-vline 
WA_ALMSCTYPE_STR-MSGTEXT sy-vline 
WA_ALMSCTYPE_STR-RC sy-vline      INTO ld_text SEPARATED BY SPACE.

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