ABAP Select data from SAP table IWRKCCAPINTRVL3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IWRKCCAPINTRVL3 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 IWRKCCAPINTRVL3. 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 IWRKCCAPINTRVL3 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_IWRKCCAPINTRVL3 TYPE STANDARD TABLE OF IWRKCCAPINTRVL3,
      WA_IWRKCCAPINTRVL3 TYPE IWRKCCAPINTRVL3,
      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: <IWRKCCAPINTRVL3> TYPE IWRKCCAPINTRVL3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IWRKCCAPINTRVL3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IWRKCCAPINTRVL3
  INTO TABLE IT_IWRKCCAPINTRVL3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWRKCCAPINTRVL3
*  INTO TABLE @DATA(IT_IWRKCCAPINTRVL32).
*--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_IWRKCCAPINTRVL3 INDEX 1 INTO DATA(WA_IWRKCCAPINTRVL32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IWRKCCAPINTRVL3 ASSIGNING <IWRKCCAPINTRVL3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWRKCCAPINTRVL3>-MANDT = 1.
<IWRKCCAPINTRVL3>-WORKCENTERINTERNALID = 1.
<IWRKCCAPINTRVL3>-WORKCENTERTYPECODE = 1.
<IWRKCCAPINTRVL3>-CAPACITYCATEGORYALLOCATION = 1.
<IWRKCCAPINTRVL3>-CAPACITYINTERNALID = 1.

ENDLOOP.

LOOP AT IT_IWRKCCAPINTRVL3 INTO WA_IWRKCCAPINTRVL3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWRKCCAPINTRVL3-CAPACITYACTIVEVERSION, sy-vline,
  WA_IWRKCCAPINTRVL3-INTERVALENDDATE, sy-vline,
  WA_IWRKCCAPINTRVL3-INTERVALSTARTDATE, sy-vline,
  WA_IWRKCCAPINTRVL3-STDAVAILABLECAPACITYISVALID, sy-vline,
  WA_IWRKCCAPINTRVL3-AVAILABLECAPACITYINTERVALDURN, sy-vline,
  WA_IWRKCCAPINTRVL3-SHIFTSEQUENCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWRKCCAPINTRVL3 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_IWRKCCAPINTRVL3 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_IWRKCCAPINTRVL3 INTO WA_IWRKCCAPINTRVL3.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IWRKCCAPINTRVL3_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
INTERVALENDDATE TYPE STRING,
INTERVALSTARTDATE TYPE STRING,
STDAVAILABLECAPACITYISVALID TYPE STRING,
AVAILABLECAPACITYINTERVALDURN TYPE STRING,
SHIFTSEQUENCE TYPE STRING,
WORKDAYRULE TYPE STRING,
CAPACITYNUMBEROFSHIFTS TYPE STRING,
CAPACITYNUMBEROFCAPACITIES TYPE STRING,
CAPACITYPLANUTILIZATIONPERCENT TYPE STRING,
CAPACITYLASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWRKCCAPINTRVL3_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_IWRKCCAPINTRVL3_STR-MANDT sy-vline 
WA_IWRKCCAPINTRVL3_STR-WORKCENTERINTERNALID sy-vline 
WA_IWRKCCAPINTRVL3_STR-WORKCENTERTYPECODE sy-vline 
WA_IWRKCCAPINTRVL3_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_IWRKCCAPINTRVL3_STR-CAPACITYINTERNALID sy-vline 
WA_IWRKCCAPINTRVL3_STR-CAPACITYACTIVEVERSION sy-vline 
WA_IWRKCCAPINTRVL3_STR-INTERVALENDDATE sy-vline 
WA_IWRKCCAPINTRVL3_STR-INTERVALSTARTDATE sy-vline 
WA_IWRKCCAPINTRVL3_STR-STDAVAILABLECAPACITYISVALID sy-vline 
WA_IWRKCCAPINTRVL3_STR-AVAILABLECAPACITYINTERVALDURN sy-vline 
WA_IWRKCCAPINTRVL3_STR-SHIFTSEQUENCE sy-vline 
WA_IWRKCCAPINTRVL3_STR-WORKDAYRULE sy-vline 
WA_IWRKCCAPINTRVL3_STR-CAPACITYNUMBEROFSHIFTS sy-vline 
WA_IWRKCCAPINTRVL3_STR-CAPACITYNUMBEROFCAPACITIES sy-vline 
WA_IWRKCCAPINTRVL3_STR-CAPACITYPLANUTILIZATIONPERCENT sy-vline 
WA_IWRKCCAPINTRVL3_STR-CAPACITYLASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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