ABAP Select data from SAP table CWCCAPINTERVALTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWCCAPINTERVALTP
*  INTO TABLE @DATA(IT_CWCCAPINTERVALTP2).
*--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_CWCCAPINTERVALTP INDEX 1 INTO DATA(WA_CWCCAPINTERVALTP2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWCCAPINTERVALTP-VALIDITYENDDATE, sy-vline,
  WA_CWCCAPINTERVALTP-CAPACITYACTIVEVERSION, sy-vline,
  WA_CWCCAPINTERVALTP-VALIDITYENDDATEFOREDIT, sy-vline,
  WA_CWCCAPINTERVALTP-VALIDITYBEGINDATE, sy-vline,
  WA_CWCCAPINTERVALTP-WORKDAYRULE, sy-vline,
  WA_CWCCAPINTERVALTP-CAPACITYNUMBEROFCAPACITIES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWCCAPINTERVALTP 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_CWCCAPINTERVALTP 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_CWCCAPINTERVALTP INTO WA_CWCCAPINTERVALTP.


*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_CWCCAPINTERVALTP_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
VALIDITYENDDATE TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
VALIDITYENDDATEFOREDIT TYPE STRING,
VALIDITYBEGINDATE TYPE STRING,
WORKDAYRULE TYPE STRING,
CAPACITYNUMBEROFCAPACITIES TYPE STRING,
AVAILABLECAPACITYINTERVALDURN TYPE STRING,
CAPACITYPLANUTILIZATIONPERCENT TYPE STRING,
STDAVAILABLECAPACITYISVALID TYPE STRING,
SHIFTSEQUENCE TYPE STRING,
INTERVALSTATUSTEXT TYPE STRING,
INTERVALSTATUSCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWCCAPINTERVALTP_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_CWCCAPINTERVALTP_STR-MANDT sy-vline 
WA_CWCCAPINTERVALTP_STR-WORKCENTERINTERNALID sy-vline 
WA_CWCCAPINTERVALTP_STR-WORKCENTERTYPECODE sy-vline 
WA_CWCCAPINTERVALTP_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_CWCCAPINTERVALTP_STR-CAPACITYINTERNALID sy-vline 
WA_CWCCAPINTERVALTP_STR-VALIDITYENDDATE sy-vline 
WA_CWCCAPINTERVALTP_STR-CAPACITYACTIVEVERSION sy-vline 
WA_CWCCAPINTERVALTP_STR-VALIDITYENDDATEFOREDIT sy-vline 
WA_CWCCAPINTERVALTP_STR-VALIDITYBEGINDATE sy-vline 
WA_CWCCAPINTERVALTP_STR-WORKDAYRULE sy-vline 
WA_CWCCAPINTERVALTP_STR-CAPACITYNUMBEROFCAPACITIES sy-vline 
WA_CWCCAPINTERVALTP_STR-AVAILABLECAPACITYINTERVALDURN sy-vline 
WA_CWCCAPINTERVALTP_STR-CAPACITYPLANUTILIZATIONPERCENT sy-vline 
WA_CWCCAPINTERVALTP_STR-STDAVAILABLECAPACITYISVALID sy-vline 
WA_CWCCAPINTERVALTP_STR-SHIFTSEQUENCE sy-vline 
WA_CWCCAPINTERVALTP_STR-INTERVALSTATUSTEXT sy-vline 
WA_CWCCAPINTERVALTP_STR-INTERVALSTATUSCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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