ABAP Select data from SAP table CKI_W03_ML into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKI_W03_ML 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 CKI_W03_ML. 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 CKI_W03_ML 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_CKI_W03_ML TYPE STANDARD TABLE OF CKI_W03_ML,
      WA_CKI_W03_ML TYPE CKI_W03_ML,
      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: <CKI_W03_ML> TYPE CKI_W03_ML.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CKI_W03_ML.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CKI_W03_ML
  INTO TABLE IT_CKI_W03_ML.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKI_W03_ML
*  INTO TABLE @DATA(IT_CKI_W03_ML2).
*--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_CKI_W03_ML INDEX 1 INTO DATA(WA_CKI_W03_ML2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CKI_W03_ML ASSIGNING <CKI_W03_ML>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKI_W03_ML>-STPRS = 1.
<CKI_W03_ML>-PVPRS = 1.
<CKI_W03_ML>-SALK3 = 1.
<CKI_W03_ML>-SALKV = 1.
<CKI_W03_ML>-PEINH = 1.

ENDLOOP.

LOOP AT IT_CKI_W03_ML INTO WA_CKI_W03_ML.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKI_W03_ML-ZPLPR, sy-vline,
  WA_CKI_W03_ML-ZKPRS, sy-vline,
  WA_CKI_W03_ML-ZUABW, sy-vline,
  WA_CKI_W03_ML-ZUUMB, sy-vline,
  WA_CKI_W03_ML-VNPRD, sy-vline,
  WA_CKI_W03_ML-VPPRD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKI_W03_ML 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_CKI_W03_ML 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_CKI_W03_ML INTO WA_CKI_W03_ML.


*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_CKI_W03_ML_STR, 
STPRS TYPE STRING,
PVPRS TYPE STRING,
SALK3 TYPE STRING,
SALKV TYPE STRING,
PEINH TYPE STRING,
ZPLPR TYPE STRING,
ZKPRS TYPE STRING,
ZUABW TYPE STRING,
ZUUMB TYPE STRING,
VNPRD TYPE STRING,
VPPRD TYPE STRING,
EKPRD TYPE STRING,
PBPRD TYPE STRING,
ZUKDM TYPE STRING,
VNKDM TYPE STRING,
VPKDM TYPE STRING,
EKKDM TYPE STRING,
PBKDM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKI_W03_ML_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_CKI_W03_ML_STR-STPRS sy-vline 
WA_CKI_W03_ML_STR-PVPRS sy-vline 
WA_CKI_W03_ML_STR-SALK3 sy-vline 
WA_CKI_W03_ML_STR-SALKV sy-vline 
WA_CKI_W03_ML_STR-PEINH sy-vline 
WA_CKI_W03_ML_STR-ZPLPR sy-vline 
WA_CKI_W03_ML_STR-ZKPRS sy-vline 
WA_CKI_W03_ML_STR-ZUABW sy-vline 
WA_CKI_W03_ML_STR-ZUUMB sy-vline 
WA_CKI_W03_ML_STR-VNPRD sy-vline 
WA_CKI_W03_ML_STR-VPPRD sy-vline 
WA_CKI_W03_ML_STR-EKPRD sy-vline 
WA_CKI_W03_ML_STR-PBPRD sy-vline 
WA_CKI_W03_ML_STR-ZUKDM sy-vline 
WA_CKI_W03_ML_STR-VNKDM sy-vline 
WA_CKI_W03_ML_STR-VPKDM sy-vline 
WA_CKI_W03_ML_STR-EKKDM sy-vline 
WA_CKI_W03_ML_STR-PBKDM sy-vline      INTO ld_text SEPARATED BY SPACE.

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