ABAP Select data from SAP table KMDQRULEMINETP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KMDQRULEMINETP
*  INTO TABLE @DATA(IT_KMDQRULEMINETP2).
*--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_KMDQRULEMINETP INDEX 1 INTO DATA(WA_KMDQRULEMINETP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KMDQRULEMINETP>-MANDT = 1.
<KMDQRULEMINETP>-MDQLTYRULEMININGUUID = 1.
<KMDQRULEMINETP>-MDQLTYBUSINESSOBJECTTYPECODE = 1.
<KMDQRULEMINETP>-MDQLTYRULEMINING = 1.
<KMDQRULEMINETP>-MDQLTYRULEMININGTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KMDQRULEMINETP-MDQLTYRULEMININGGOALTEXT, sy-vline,
  WA_KMDQRULEMINETP-MDQLTYRULEMININGMAXNMBROFRULES, sy-vline,
  WA_KMDQRULEMINETP-MDQLTYRULEMININGSTATUS, sy-vline,
  WA_KMDQRULEMINETP-MDQLTYRULEMININGCREATIONDTETME, sy-vline,
  WA_KMDQRULEMINETP-MDQLTYRULEMININGCRTEDBYUSR, sy-vline,
  WA_KMDQRULEMINETP-MDQLTYRULEMININGCHANGEDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KMDQRULEMINETP 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_KMDQRULEMINETP 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_KMDQRULEMINETP INTO WA_KMDQRULEMINETP.


*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 MDQLTYRULEMINING
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KMDQRULEMINETP-MDQLTYRULEMINING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KMDQRULEMINETP-MDQLTYRULEMINING.
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_KMDQRULEMINETP_STR, 
MANDT TYPE STRING,
MDQLTYRULEMININGUUID TYPE STRING,
MDQLTYBUSINESSOBJECTTYPECODE TYPE STRING,
MDQLTYRULEMINING TYPE STRING,
MDQLTYRULEMININGTEXT TYPE STRING,
MDQLTYRULEMININGGOALTEXT TYPE STRING,
MDQLTYRULEMININGMAXNMBROFRULES TYPE STRING,
MDQLTYRULEMININGSTATUS TYPE STRING,
MDQLTYRULEMININGCREATIONDTETME TYPE STRING,
MDQLTYRULEMININGCRTEDBYUSR TYPE STRING,
MDQLTYRULEMININGCHANGEDATETIME TYPE STRING,
MDQLTYRULEMININGCHGDBYUSR TYPE STRING,
MDQLTYRULEMININGCOMPLTNDTETME TYPE STRING,
MDQLTYRULEMNNGTOTALRULECNT TYPE STRING,
MDQLTYRULEMNNGACCEPTEDRULECNT TYPE STRING,
MDQLTYRULEMNNGREVIEWRULECNT TYPE STRING,
MDQLTYRULEMININGFLDSELFLDCNT TYPE STRING,
MDQLTYRULEMININGEXPRESSION TYPE STRING,
MDQLTYRULEMNNGTECHDATASEL TYPE STRING,
MDQLTYRULEMININGDATASELFLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KMDQRULEMINETP_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_KMDQRULEMINETP_STR-MANDT sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGUUID sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYBUSINESSOBJECTTYPECODE sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMINING sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGTEXT sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGGOALTEXT sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGMAXNMBROFRULES sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGSTATUS sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGCREATIONDTETME sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGCRTEDBYUSR sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGCHANGEDATETIME sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGCHGDBYUSR sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGCOMPLTNDTETME sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMNNGTOTALRULECNT sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMNNGACCEPTEDRULECNT sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMNNGREVIEWRULECNT sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGFLDSELFLDCNT sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGEXPRESSION sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMNNGTECHDATASEL sy-vline 
WA_KMDQRULEMINETP_STR-MDQLTYRULEMININGDATASELFLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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