ABAP Select data from SAP table ALMSCRAWT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALMSCRAWT
*  INTO TABLE @DATA(IT_ALMSCRAWT2).
*--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_ALMSCRAWT INDEX 1 INTO DATA(WA_ALMSCRAWT2).


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

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

ENDLOOP.

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

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


*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_ALMSCRAWT_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,
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_ALMSCRAWT_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_ALMSCRAWT_STR-MTSYSID sy-vline 
WA_ALMSCRAWT_STR-MTMCNAME sy-vline 
WA_ALMSCRAWT_STR-MTNUMRANGE sy-vline 
WA_ALMSCRAWT_STR-MTUID sy-vline 
WA_ALMSCRAWT_STR-MTCLASS sy-vline 
WA_ALMSCRAWT_STR-MTINDEX sy-vline 
WA_ALMSCRAWT_STR-EXTINDEX sy-vline 
WA_ALMSCRAWT_STR-CUSTSTAT sy-vline 
WA_ALMSCRAWT_STR-RAISEVALUE sy-vline 
WA_ALMSCRAWT_STR-RAISESEVER sy-vline 
WA_ALMSCRAWT_STR-ACTMSGMODE sy-vline 
WA_ALMSCRAWT_STR-ACTMSGMAXS sy-vline 
WA_ALMSCRAWT_STR-MAXALPROID sy-vline 
WA_ALMSCRAWT_STR-KEEPLINTYP sy-vline 
WA_ALMSCRAWT_STR-KEEPLINMAX sy-vline 
WA_ALMSCRAWT_STR-CUSGRPNAME sy-vline 
WA_ALMSCRAWT_STR-MSCGLLID sy-vline 
WA_ALMSCRAWT_STR-MSCDATE sy-vline 
WA_ALMSCRAWT_STR-MSCTIME sy-vline 
WA_ALMSCRAWT_STR-MSCDUMMY sy-vline 
WA_ALMSCRAWT_STR-VALUEORIG sy-vline 
WA_ALMSCRAWT_STR-SEVERORIG sy-vline 
WA_ALMSCRAWT_STR-VALUEFLTRD sy-vline 
WA_ALMSCRAWT_STR-SEVERFLTRD sy-vline 
WA_ALMSCRAWT_STR-MANDT sy-vline 
WA_ALMSCRAWT_STR-USERID sy-vline 
WA_ALMSCRAWT_STR-MSGCLASS sy-vline 
WA_ALMSCRAWT_STR-MSGID sy-vline 
WA_ALMSCRAWT_STR-MSGARG1 sy-vline 
WA_ALMSCRAWT_STR-ARGTYPE1 sy-vline 
WA_ALMSCRAWT_STR-MSGARG2 sy-vline 
WA_ALMSCRAWT_STR-ARGTYPE2 sy-vline 
WA_ALMSCRAWT_STR-MSGARG3 sy-vline 
WA_ALMSCRAWT_STR-ARGTYPE3 sy-vline 
WA_ALMSCRAWT_STR-MSGARG4 sy-vline 
WA_ALMSCRAWT_STR-ARGTYPE4 sy-vline 
WA_ALMSCRAWT_STR-MSGTEXT sy-vline 
WA_ALMSCRAWT_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.