ABAP Select data from SAP table CKMLCR_DQ_RES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKMLCR_DQ_RES
*  INTO TABLE @DATA(IT_CKMLCR_DQ_RES2).
*--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_CKMLCR_DQ_RES INDEX 1 INTO DATA(WA_CKMLCR_DQ_RES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKMLCR_DQ_RES>-CLIENT = 1.
<CKMLCR_DQ_RES>-PROCESS_ID = 1.
<CKMLCR_DQ_RES>-PROCESS_STEP_NO = 1.
<CKMLCR_DQ_RES>-SOURCE_SYSTEM = 1.
<CKMLCR_DQ_RES>-SOURCE_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKMLCR_DQ_RES-BWKEY, sy-vline,
  WA_CKMLCR_DQ_RES-BWTAR, sy-vline,
  WA_CKMLCR_DQ_RES-KALNR, sy-vline,
  WA_CKMLCR_DQ_RES-BDATJ, sy-vline,
  WA_CKMLCR_DQ_RES-POPER, sy-vline,
  WA_CKMLCR_DQ_RES-UNTPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKMLCR_DQ_RES 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_CKMLCR_DQ_RES 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_CKMLCR_DQ_RES INTO WA_CKMLCR_DQ_RES.


*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 GJAHR, internal->external for field BDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCR_DQ_RES-BDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCR_DQ_RES-BDATJ.
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_CKMLCR_DQ_RES_STR, 
CLIENT TYPE STRING,
PROCESS_ID TYPE STRING,
PROCESS_STEP_NO TYPE STRING,
SOURCE_SYSTEM TYPE STRING,
SOURCE_ID TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
KALNR TYPE STRING,
BDATJ TYPE STRING,
POPER TYPE STRING,
UNTPER TYPE STRING,
CURTP TYPE STRING,
RULEUUID TYPE STRING,
RESULTTYPE TYPE STRING,
RESULT_COUNT TYPE STRING,
BASETABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKMLCR_DQ_RES_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_CKMLCR_DQ_RES_STR-CLIENT sy-vline 
WA_CKMLCR_DQ_RES_STR-PROCESS_ID sy-vline 
WA_CKMLCR_DQ_RES_STR-PROCESS_STEP_NO sy-vline 
WA_CKMLCR_DQ_RES_STR-SOURCE_SYSTEM sy-vline 
WA_CKMLCR_DQ_RES_STR-SOURCE_ID sy-vline 
WA_CKMLCR_DQ_RES_STR-BWKEY sy-vline 
WA_CKMLCR_DQ_RES_STR-BWTAR sy-vline 
WA_CKMLCR_DQ_RES_STR-KALNR sy-vline 
WA_CKMLCR_DQ_RES_STR-BDATJ sy-vline 
WA_CKMLCR_DQ_RES_STR-POPER sy-vline 
WA_CKMLCR_DQ_RES_STR-UNTPER sy-vline 
WA_CKMLCR_DQ_RES_STR-CURTP sy-vline 
WA_CKMLCR_DQ_RES_STR-RULEUUID sy-vline 
WA_CKMLCR_DQ_RES_STR-RESULTTYPE sy-vline 
WA_CKMLCR_DQ_RES_STR-RESULT_COUNT sy-vline 
WA_CKMLCR_DQ_RES_STR-BASETABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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