ABAP Select data from SAP table CKMLMV013 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKMLMV013 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 CKMLMV013. 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 CKMLMV013 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_CKMLMV013 TYPE STANDARD TABLE OF CKMLMV013,
      WA_CKMLMV013 TYPE CKMLMV013,
      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: <CKMLMV013> TYPE CKMLMV013.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CKMLMV013.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CKMLMV013
  INTO TABLE IT_CKMLMV013.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKMLMV013
*  INTO TABLE @DATA(IT_CKMLMV0132).
*--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_CKMLMV013 INDEX 1 INTO DATA(WA_CKMLMV0132).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CKMLMV013 ASSIGNING <CKMLMV013>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKMLMV013>-MANDT = 1.
<CKMLMV013>-AUFNR = 1.
<CKMLMV013>-AUTYP = 1.
<CKMLMV013>-KALNR_PROC = 1.
<CKMLMV013>-PKOSA = 1.

ENDLOOP.

LOOP AT IT_CKMLMV013 INTO WA_CKMLMV013.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKMLMV013-AEDAT, sy-vline,
  WA_CKMLMV013-FLG_WBWG, sy-vline,
  WA_CKMLMV013-LOEKZ, sy-vline,
  WA_CKMLMV013-PRWRK, sy-vline,
  WA_CKMLMV013-PLWRK, sy-vline,
  WA_CKMLMV013-PMATN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKMLMV013 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_CKMLMV013 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_CKMLMV013 INTO WA_CKMLMV013.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PKOSA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-PKOSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-PKOSA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-PMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-PMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROJN
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-PROJN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-PROJN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-STLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLMV013-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLMV013-PLNAL.
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_CKMLMV013_STR, 
MANDT TYPE STRING,
AUFNR TYPE STRING,
AUTYP TYPE STRING,
KALNR_PROC TYPE STRING,
PKOSA TYPE STRING,
AEDAT TYPE STRING,
FLG_WBWG TYPE STRING,
LOEKZ TYPE STRING,
PRWRK TYPE STRING,
PLWRK TYPE STRING,
PMATN TYPE STRING,
KZBWS TYPE STRING,
PROJN TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
VERID TYPE STRING,
STLAN TYPE STRING,
STLAL TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKMLMV013_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_CKMLMV013_STR-MANDT sy-vline 
WA_CKMLMV013_STR-AUFNR sy-vline 
WA_CKMLMV013_STR-AUTYP sy-vline 
WA_CKMLMV013_STR-KALNR_PROC sy-vline 
WA_CKMLMV013_STR-PKOSA sy-vline 
WA_CKMLMV013_STR-AEDAT sy-vline 
WA_CKMLMV013_STR-FLG_WBWG sy-vline 
WA_CKMLMV013_STR-LOEKZ sy-vline 
WA_CKMLMV013_STR-PRWRK sy-vline 
WA_CKMLMV013_STR-PLWRK sy-vline 
WA_CKMLMV013_STR-PMATN sy-vline 
WA_CKMLMV013_STR-KZBWS sy-vline 
WA_CKMLMV013_STR-PROJN sy-vline 
WA_CKMLMV013_STR-KDAUF sy-vline 
WA_CKMLMV013_STR-KDPOS sy-vline 
WA_CKMLMV013_STR-VERID sy-vline 
WA_CKMLMV013_STR-STLAN sy-vline 
WA_CKMLMV013_STR-STLAL sy-vline 
WA_CKMLMV013_STR-PLNTY sy-vline 
WA_CKMLMV013_STR-PLNNR sy-vline 
WA_CKMLMV013_STR-PLNAL sy-vline 
WA_CKMLMV013_STR-ERNAM sy-vline 
WA_CKMLMV013_STR-ERDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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