ABAP Select data from SAP table CAPEVAL_S_WORKCENTEROVERVIEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CAPEVAL_S_WORKCENTEROVERVIEW
*  INTO TABLE @DATA(IT_CAPEVAL_S_WORKCENTEROVERVIEW2).
*--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_CAPEVAL_S_WORKCENTEROVERVIEW INDEX 1 INTO DATA(WA_CAPEVAL_S_WORKCENTEROVERVIEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CAPEVAL_S_WORKCENTEROVERVIEW>-MANDT = 1.
<CAPEVAL_S_WORKCENTEROVERVIEW>-WORKCENTERINTERNALID = 1.
<CAPEVAL_S_WORKCENTEROVERVIEW>-CAPACITYINTERNALID = 1.
<CAPEVAL_S_WORKCENTEROVERVIEW>-WORKCENTERDESC = 1.
<CAPEVAL_S_WORKCENTEROVERVIEW>-CAPACITYCATEGORYNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CAPEVAL_S_WORKCENTEROVERVIEW-BASEUNIT, sy-vline,
  WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERMAXUTILZNINTIMEPERD, sy-vline,
  WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERCAPFIRSTOVERLOADDTE, sy-vline,
  WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERCAPACITYBACKLOGINHRS, sy-vline,
  WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERTOTCAPINTIMEPERIOD, sy-vline,
  WA_CAPEVAL_S_WORKCENTEROVERVIEW-CAPACITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CAPEVAL_S_WORKCENTEROVERVIEW 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_CAPEVAL_S_WORKCENTEROVERVIEW 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_CAPEVAL_S_WORKCENTEROVERVIEW INTO WA_CAPEVAL_S_WORKCENTEROVERVIEW.


*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 BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CAPEVAL_S_WORKCENTEROVERVIEW-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAPEVAL_S_WORKCENTEROVERVIEW-BASEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERCAPACITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERCAPACITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERCAPUNITTEXT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERCAPUNITTEXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAPEVAL_S_WORKCENTEROVERVIEW-WORKCENTERCAPUNITTEXT.
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_CAPEVAL_S_WORKCENTEROVERVIEW_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
WORKCENTERDESC TYPE STRING,
CAPACITYCATEGORYNAME TYPE STRING,
BASEUNIT TYPE STRING,
WORKCENTERMAXUTILZNINTIMEPERD TYPE STRING,
WORKCENTERCAPFIRSTOVERLOADDTE TYPE STRING,
WORKCENTERCAPACITYBACKLOGINHRS TYPE STRING,
WORKCENTERTOTCAPINTIMEPERIOD TYPE STRING,
CAPACITY TYPE STRING,
WORKCENTERMINUTILZNINTMEPERIOD TYPE STRING,
WORKCENTERCAPFIRSTCRITLLOADDTE TYPE STRING,
WORKCENTERAVGUTILZNINTIMEPERD TYPE STRING,
WORKCENTERTOTAVAILCAPINTMEPERD TYPE STRING,
WORKCENTERTOTUTILZNINTMEPERD TYPE STRING,
CAPACITYEVALUATIONTIMEPERIOD TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
WORKCENTERCAPUNITTEXT TYPE STRING,
WORKCENTERAVAILABLECAPACITY TYPE STRING,
WORKCENTERCAPACITYREQUIREMENT TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
WORKCENTER TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
CAPACITYREQUIREMENTORIGIN TYPE STRING,
OPERATIONPLANNINGSTATUSCODE TYPE STRING,
ORDERSTATUSCODE TYPE STRING,
CRITICALITY TYPE STRING,
TO_WORKCENTERUTILIZATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CAPEVAL_S_WORKCENTEROVERVIEW_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_CAPEVAL_S_WORKCENTEROVERVIEW_STR-MANDT sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERINTERNALID sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CAPACITYINTERNALID sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERDESC sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CAPACITYCATEGORYNAME sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-BASEUNIT sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERMAXUTILZNINTIMEPERD sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERCAPFIRSTOVERLOADDTE sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERCAPACITYBACKLOGINHRS sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERTOTCAPINTIMEPERIOD sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CAPACITY sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERMINUTILZNINTMEPERIOD sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERCAPFIRSTCRITLLOADDTE sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERAVGUTILZNINTIMEPERD sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERTOTAVAILCAPINTMEPERD sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERTOTUTILZNINTMEPERD sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CAPACITYEVALUATIONTIMEPERIOD sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERCAPUNITTEXT sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERAVAILABLECAPACITY sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERCAPACITYREQUIREMENT sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CAPACITYCATEGORYCODE sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTER sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CAPACITYREQUIREMENTORIGIN sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-OPERATIONPLANNINGSTATUSCODE sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-ORDERSTATUSCODE sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-CRITICALITY sy-vline 
WA_CAPEVAL_S_WORKCENTEROVERVIEW_STR-TO_WORKCENTERUTILIZATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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