ABAP Select data from SAP table CPS_TASK_LIST_MAINT_TSK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPS_TASK_LIST_MAINT_TSK
*  INTO TABLE @DATA(IT_CPS_TASK_LIST_MAINT_TSK2).
*--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_CPS_TASK_LIST_MAINT_TSK INDEX 1 INTO DATA(WA_CPS_TASK_LIST_MAINT_TSK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPS_TASK_LIST_MAINT_TSK>-TASK_LIST_USAGE = 1.
<CPS_TASK_LIST_MAINT_TSK>-PLANT = 1.
<CPS_TASK_LIST_MAINT_TSK>-TASK_LIST_STATUS = 1.
<CPS_TASK_LIST_MAINT_TSK>-TASK_MEASURE_UNIT = 1.
<CPS_TASK_LIST_MAINT_TSK>-TASK_MEASURE_UNIT_ISO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPS_TASK_LIST_MAINT_TSK-LOT_SIZE_FROM, sy-vline,
  WA_CPS_TASK_LIST_MAINT_TSK-LOT_SIZE_TO, sy-vline,
  WA_CPS_TASK_LIST_MAINT_TSK-RESP_PLANNER_GROUP, sy-vline,
  WA_CPS_TASK_LIST_MAINT_TSK-DESCRIPTION, sy-vline,
  WA_CPS_TASK_LIST_MAINT_TSK-OLD_NUMBER_OF_TASK_LIST, sy-vline,
  WA_CPS_TASK_LIST_MAINT_TSK-RECALC_STD_VALUES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPS_TASK_LIST_MAINT_TSK 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_CPS_TASK_LIST_MAINT_TSK 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_CPS_TASK_LIST_MAINT_TSK INTO WA_CPS_TASK_LIST_MAINT_TSK.


*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 CUNIT, internal->external for field TASK_MEASURE_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPS_TASK_LIST_MAINT_TSK-TASK_MEASURE_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPS_TASK_LIST_MAINT_TSK-TASK_MEASURE_UNIT.
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_CPS_TASK_LIST_MAINT_TSK_STR, 
TASK_LIST_USAGE TYPE STRING,
PLANT TYPE STRING,
TASK_LIST_STATUS TYPE STRING,
TASK_MEASURE_UNIT TYPE STRING,
TASK_MEASURE_UNIT_ISO TYPE STRING,
LOT_SIZE_FROM TYPE STRING,
LOT_SIZE_TO TYPE STRING,
RESP_PLANNER_GROUP TYPE STRING,
DESCRIPTION TYPE STRING,
OLD_NUMBER_OF_TASK_LIST TYPE STRING,
RECALC_STD_VALUES TYPE STRING,
DYN_MODIF_LEVEL TYPE STRING,
DYN_MODIF_RULE TYPE STRING,
DYN_MODIF_BY_MATERIAL TYPE STRING,
DYN_MODIF_BY_VENDOR TYPE STRING,
DYN_MODIF_BY_MANUFAC TYPE STRING,
DYN_MODIF_BY_CUSTOMR TYPE STRING,
DYN_MODIF_BY_MACHINE TYPE STRING,
SAMPLE_DRAWING_PROCEDURE TYPE STRING,
IND_UNITS_EXT_NUMBERING TYPE STRING,
IDENT_KEY TYPE STRING,
INSPPOINT_PARTIALLOT_ASSGNMT TYPE STRING,
CHANGE_RULE TYPE STRING,
OBJECT_CHANGE_TYPE TYPE STRING,
PLANNING_WORK_CENTER TYPE STRING,
MS_FLAG TYPE STRING,
DEL_FLAG TYPE STRING,
MES_ROUTINGID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPS_TASK_LIST_MAINT_TSK_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_CPS_TASK_LIST_MAINT_TSK_STR-TASK_LIST_USAGE sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-PLANT sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-TASK_LIST_STATUS sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-TASK_MEASURE_UNIT sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-TASK_MEASURE_UNIT_ISO sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-LOT_SIZE_FROM sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-LOT_SIZE_TO sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-RESP_PLANNER_GROUP sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DESCRIPTION sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-OLD_NUMBER_OF_TASK_LIST sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-RECALC_STD_VALUES sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DYN_MODIF_LEVEL sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DYN_MODIF_RULE sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DYN_MODIF_BY_MATERIAL sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DYN_MODIF_BY_VENDOR sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DYN_MODIF_BY_MANUFAC sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DYN_MODIF_BY_CUSTOMR sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DYN_MODIF_BY_MACHINE sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-SAMPLE_DRAWING_PROCEDURE sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-IND_UNITS_EXT_NUMBERING sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-IDENT_KEY sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-INSPPOINT_PARTIALLOT_ASSGNMT sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-CHANGE_RULE sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-OBJECT_CHANGE_TYPE sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-PLANNING_WORK_CENTER sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-MS_FLAG sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-DEL_FLAG sy-vline 
WA_CPS_TASK_LIST_MAINT_TSK_STR-MES_ROUTINGID sy-vline      INTO ld_text SEPARATED BY SPACE.

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