ABAP Select data from SAP table CMCB_S_WKLIST_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMCB_S_WKLIST_UI
*  INTO TABLE @DATA(IT_CMCB_S_WKLIST_UI2).
*--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_CMCB_S_WKLIST_UI INDEX 1 INTO DATA(WA_CMCB_S_WKLIST_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMCB_S_WKLIST_UI>-MANDT = 1.
<CMCB_S_WKLIST_UI>-USER_ID = 1.
<CMCB_S_WKLIST_UI>-ITEM_ID = 1.
<CMCB_S_WKLIST_UI>-CATEGORY = 1.
<CMCB_S_WKLIST_UI>-CATEGORY_SEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMCB_S_WKLIST_UI-TASK_CATEGORY, sy-vline,
  WA_CMCB_S_WKLIST_UI-TASK_CATE_DESC, sy-vline,
  WA_CMCB_S_WKLIST_UI-UNIT_ID_SEL, sy-vline,
  WA_CMCB_S_WKLIST_UI-CATE_ICON, sy-vline,
  WA_CMCB_S_WKLIST_UI-ATTACH_ID, sy-vline,
  WA_CMCB_S_WKLIST_UI-ATTACH_ICON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMCB_S_WKLIST_UI 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_CMCB_S_WKLIST_UI 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_CMCB_S_WKLIST_UI INTO WA_CMCB_S_WKLIST_UI.


*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 CATE, internal->external for field CATEGORY_SEL
CALL FUNCTION 'CONVERSION_EXIT_CATE_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_WKLIST_UI-CATEGORY_SEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_WKLIST_UI-CATEGORY_SEL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AU172, internal->external for field AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_WKLIST_UI-AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_WKLIST_UI-AMOUNT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit BTCRT, internal->external for field BUDGET_TYPE
CALL FUNCTION 'CONVERSION_EXIT_BTCRT_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_WKLIST_UI-BUDGET_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_WKLIST_UI-BUDGET_TYPE.
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_CMCB_S_WKLIST_UI_STR, 
MANDT TYPE STRING,
USER_ID TYPE STRING,
ITEM_ID TYPE STRING,
CATEGORY TYPE STRING,
CATEGORY_SEL TYPE STRING,
TASK_CATEGORY TYPE STRING,
TASK_CATE_DESC TYPE STRING,
UNIT_ID_SEL TYPE STRING,
CATE_ICON TYPE STRING,
ATTACH_ID TYPE STRING,
ATTACH_ICON TYPE STRING,
CB_AREA TYPE STRING,
CB_AREA_TXT TYPE STRING,
CYCLE_ID TYPE STRING,
CYCLE_TYPE TYPE STRING,
CYCLE_TYPE_DESC TYPE STRING,
CYCLE_NAME TYPE STRING,
FROM_DATE TYPE STRING,
TO_DATE TYPE STRING,
FROM_TIME TYPE STRING,
TO_TIME TYPE STRING,
CYCLE_DEADLINE TYPE STRING,
CYCLE_DLN_TIME TYPE STRING,
AMOUNT TYPE STRING,
WAERS TYPE STRING,
BUDGET TYPE STRING,
MIME_TYPE TYPE STRING,
FILE_DATA TYPE STRING,
FILE_NAME TYPE STRING,
FILE_DESC TYPE STRING,
UNIT_ID TYPE STRING,
FROM_UNIT_ID TYPE STRING,
FROM_ORG_UNIT_TXT TYPE STRING,
TO_UNIT_ID TYPE STRING,
TO_ORG_UNIT_TXT TYPE STRING,
TO_POSITION_ID TYPE STRING,
TO_POSITION_TXT TYPE STRING,
FROM_POSITION_ID TYPE STRING,
FROM_POSITION_TXT TYPE STRING,
STATUS TYPE STRING,
STATUS_DESC TYPE STRING,
SUBJECT TYPE STRING,
NOTE TYPE STRING,
SENT_BY TYPE STRING,
NAME_TEXT TYPE STRING,
SENT_ON TYPE STRING,
SENT_TIME TYPE STRING,
SENDER_FLAG TYPE STRING,
ON_LEAD_SEL TYPE STRING,
WF_ID TYPE STRING,
SENT_BY_ALL TYPE STRING,
CYCLE_ID_M TYPE STRING,
BUDGET_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMCB_S_WKLIST_UI_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_CMCB_S_WKLIST_UI_STR-MANDT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-USER_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-ITEM_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CATEGORY sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CATEGORY_SEL sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TASK_CATEGORY sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TASK_CATE_DESC sy-vline 
WA_CMCB_S_WKLIST_UI_STR-UNIT_ID_SEL sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CATE_ICON sy-vline 
WA_CMCB_S_WKLIST_UI_STR-ATTACH_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-ATTACH_ICON sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CB_AREA sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CB_AREA_TXT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CYCLE_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CYCLE_TYPE sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CYCLE_TYPE_DESC sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CYCLE_NAME sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FROM_DATE sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TO_DATE sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FROM_TIME sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TO_TIME sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CYCLE_DEADLINE sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CYCLE_DLN_TIME sy-vline 
WA_CMCB_S_WKLIST_UI_STR-AMOUNT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-WAERS sy-vline 
WA_CMCB_S_WKLIST_UI_STR-BUDGET sy-vline 
WA_CMCB_S_WKLIST_UI_STR-MIME_TYPE sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FILE_DATA sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FILE_NAME sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FILE_DESC sy-vline 
WA_CMCB_S_WKLIST_UI_STR-UNIT_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FROM_UNIT_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FROM_ORG_UNIT_TXT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TO_UNIT_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TO_ORG_UNIT_TXT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TO_POSITION_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-TO_POSITION_TXT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FROM_POSITION_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-FROM_POSITION_TXT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-STATUS sy-vline 
WA_CMCB_S_WKLIST_UI_STR-STATUS_DESC sy-vline 
WA_CMCB_S_WKLIST_UI_STR-SUBJECT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-NOTE sy-vline 
WA_CMCB_S_WKLIST_UI_STR-SENT_BY sy-vline 
WA_CMCB_S_WKLIST_UI_STR-NAME_TEXT sy-vline 
WA_CMCB_S_WKLIST_UI_STR-SENT_ON sy-vline 
WA_CMCB_S_WKLIST_UI_STR-SENT_TIME sy-vline 
WA_CMCB_S_WKLIST_UI_STR-SENDER_FLAG sy-vline 
WA_CMCB_S_WKLIST_UI_STR-ON_LEAD_SEL sy-vline 
WA_CMCB_S_WKLIST_UI_STR-WF_ID sy-vline 
WA_CMCB_S_WKLIST_UI_STR-SENT_BY_ALL sy-vline 
WA_CMCB_S_WKLIST_UI_STR-CYCLE_ID_M sy-vline 
WA_CMCB_S_WKLIST_UI_STR-BUDGET_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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