ABAP Select data from SAP table COWORK_TASKLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COWORK_TASKLOG
*  INTO TABLE @DATA(IT_COWORK_TASKLOG2).
*--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_COWORK_TASKLOG INDEX 1 INTO DATA(WA_COWORK_TASKLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COWORK_TASKLOG>-MANDT = 1.
<COWORK_TASKLOG>-FUNCT = 1.
<COWORK_TASKLOG>-OBART = 1.
<COWORK_TASKLOG>-OBJNR = 1.
<COWORK_TASKLOG>-COUNTER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COWORK_TASKLOG-TYPE, sy-vline,
  WA_COWORK_TASKLOG-ID, sy-vline,
  WA_COWORK_TASKLOG-NUMBER, sy-vline,
  WA_COWORK_TASKLOG-MESSAGE, sy-vline,
  WA_COWORK_TASKLOG-LOG_NO, sy-vline,
  WA_COWORK_TASKLOG-LOG_MSG_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COWORK_TASKLOG 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_COWORK_TASKLOG 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_COWORK_TASKLOG INTO WA_COWORK_TASKLOG.


*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 SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COWORK_TASKLOG-SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COWORK_TASKLOG-SYSTEM.
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_COWORK_TASKLOG_STR, 
MANDT TYPE STRING,
FUNCT TYPE STRING,
OBART TYPE STRING,
OBJNR TYPE STRING,
COUNTER TYPE STRING,
TYPE TYPE STRING,
ID TYPE STRING,
NUMBER TYPE STRING,
MESSAGE TYPE STRING,
LOG_NO TYPE STRING,
LOG_MSG_NO TYPE STRING,
MESSAGE_V1 TYPE STRING,
MESSAGE_V2 TYPE STRING,
MESSAGE_V3 TYPE STRING,
MESSAGE_V4 TYPE STRING,
PARAMETER TYPE STRING,
ROW TYPE STRING,
FIELD TYPE STRING,
SYSTEM TYPE STRING,
OBJECT TYPE STRING,
SUBOBJECT TYPE STRING,
EXTNUMBER TYPE STRING,
LOGNUMBER TYPE STRING,
LOGHANDLE TYPE STRING,
FLG_EXECUTED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COWORK_TASKLOG_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_COWORK_TASKLOG_STR-MANDT sy-vline 
WA_COWORK_TASKLOG_STR-FUNCT sy-vline 
WA_COWORK_TASKLOG_STR-OBART sy-vline 
WA_COWORK_TASKLOG_STR-OBJNR sy-vline 
WA_COWORK_TASKLOG_STR-COUNTER sy-vline 
WA_COWORK_TASKLOG_STR-TYPE sy-vline 
WA_COWORK_TASKLOG_STR-ID sy-vline 
WA_COWORK_TASKLOG_STR-NUMBER sy-vline 
WA_COWORK_TASKLOG_STR-MESSAGE sy-vline 
WA_COWORK_TASKLOG_STR-LOG_NO sy-vline 
WA_COWORK_TASKLOG_STR-LOG_MSG_NO sy-vline 
WA_COWORK_TASKLOG_STR-MESSAGE_V1 sy-vline 
WA_COWORK_TASKLOG_STR-MESSAGE_V2 sy-vline 
WA_COWORK_TASKLOG_STR-MESSAGE_V3 sy-vline 
WA_COWORK_TASKLOG_STR-MESSAGE_V4 sy-vline 
WA_COWORK_TASKLOG_STR-PARAMETER sy-vline 
WA_COWORK_TASKLOG_STR-ROW sy-vline 
WA_COWORK_TASKLOG_STR-FIELD sy-vline 
WA_COWORK_TASKLOG_STR-SYSTEM sy-vline 
WA_COWORK_TASKLOG_STR-OBJECT sy-vline 
WA_COWORK_TASKLOG_STR-SUBOBJECT sy-vline 
WA_COWORK_TASKLOG_STR-EXTNUMBER sy-vline 
WA_COWORK_TASKLOG_STR-LOGNUMBER sy-vline 
WA_COWORK_TASKLOG_STR-LOGHANDLE sy-vline 
WA_COWORK_TASKLOG_STR-FLG_EXECUTED sy-vline      INTO ld_text SEPARATED BY SPACE.

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