ABAP Select data from SAP table CAPEVAL_S_SHIFTS_MERGE 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_SHIFTS_MERGE 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_SHIFTS_MERGE. 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_SHIFTS_MERGE 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_SHIFTS_MERGE TYPE STANDARD TABLE OF CAPEVAL_S_SHIFTS_MERGE,
      WA_CAPEVAL_S_SHIFTS_MERGE TYPE CAPEVAL_S_SHIFTS_MERGE,
      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_SHIFTS_MERGE> TYPE CAPEVAL_S_SHIFTS_MERGE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CAPEVAL_S_SHIFTS_MERGE
*  INTO TABLE @DATA(IT_CAPEVAL_S_SHIFTS_MERGE2).
*--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_SHIFTS_MERGE INDEX 1 INTO DATA(WA_CAPEVAL_S_SHIFTS_MERGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CAPEVAL_S_SHIFTS_MERGE>-CAPACITYCATEGORYALLOCATION = 1.
<CAPEVAL_S_SHIFTS_MERGE>-CAPACITYINTERNALID = 1.
<CAPEVAL_S_SHIFTS_MERGE>-CALENDARDATE = 1.
<CAPEVAL_S_SHIFTS_MERGE>-VALIDITYENDDATE = 1.
<CAPEVAL_S_SHIFTS_MERGE>-CAPACITYACTIVEVERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CAPEVAL_S_SHIFTS_MERGE-AVAILABLECAPACITYSHIFT, sy-vline,
  WA_CAPEVAL_S_SHIFTS_MERGE-WEEKDAY, sy-vline,
  WA_CAPEVAL_S_SHIFTS_MERGE-SHIFTSTARTDATE, sy-vline,
  WA_CAPEVAL_S_SHIFTS_MERGE-SHIFTSTARTTIME, sy-vline,
  WA_CAPEVAL_S_SHIFTS_MERGE-SHIFTENDDATE, sy-vline,
  WA_CAPEVAL_S_SHIFTS_MERGE-SHIFTENDTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CAPEVAL_S_SHIFTS_MERGE 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_SHIFTS_MERGE 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_SHIFTS_MERGE INTO WA_CAPEVAL_S_SHIFTS_MERGE.


*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_CAPEVAL_S_SHIFTS_MERGE_STR, 
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CALENDARDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
AVAILABLECAPACITYSHIFT TYPE STRING,
WEEKDAY TYPE STRING,
SHIFTSTARTDATE TYPE STRING,
SHIFTSTARTTIME TYPE STRING,
SHIFTENDDATE TYPE STRING,
SHIFTENDTIME TYPE STRING,
WORKDAYRULE TYPE STRING,
CAPACITYBREAKDURATION TYPE STRING,
SHIFTDEFINITION TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
CAPACITYENDTIME TYPE STRING,
CAPACITYNUMBEROFCAPACITIES TYPE STRING,
CAPACITYPLANUTILIZATIONPERCENT TYPE STRING,
OVERLAPFLAG TYPE STRING,
UPDFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CAPEVAL_S_SHIFTS_MERGE_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_SHIFTS_MERGE_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CAPACITYINTERNALID sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CALENDARDATE sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-VALIDITYENDDATE sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CAPACITYACTIVEVERSION sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-AVAILABLECAPACITYSHIFT sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-WEEKDAY sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-SHIFTSTARTDATE sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-SHIFTSTARTTIME sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-SHIFTENDDATE sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-SHIFTENDTIME sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-WORKDAYRULE sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CAPACITYBREAKDURATION sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-SHIFTDEFINITION sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CAPACITYSTARTTIME sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CAPACITYENDTIME sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CAPACITYNUMBEROFCAPACITIES sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-CAPACITYPLANUTILIZATIONPERCENT sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-OVERLAPFLAG sy-vline 
WA_CAPEVAL_S_SHIFTS_MERGE_STR-UPDFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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