ABAP Select data from SAP table WCSPLAN into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WCSPLAN 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 WCSPLAN. 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 WCSPLAN 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_WCSPLAN TYPE STANDARD TABLE OF WCSPLAN,
      WA_WCSPLAN TYPE WCSPLAN,
      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: <WCSPLAN> TYPE WCSPLAN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCSPLAN
*  INTO TABLE @DATA(IT_WCSPLAN2).
*--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_WCSPLAN INDEX 1 INTO DATA(WA_WCSPLAN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCSPLAN>-PSPEL = 1.
<WCSPLAN>-AUFNT = 1.
<WCSPLAN>-VORNR = 1.
<WCSPLAN>-BDATE = 1.
<WCSPLAN>-BTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCSPLAN-EDATE, sy-vline,
  WA_WCSPLAN-ETIME, sy-vline,
  WA_WCSPLAN-TSDATE, sy-vline,
  WA_WCSPLAN-TSTIME, sy-vline,
  WA_WCSPLAN-TFDATE, sy-vline,
  WA_WCSPLAN-TFTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCSPLAN 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_WCSPLAN 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_WCSPLAN INTO WA_WCSPLAN.


*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 ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_WCSPLAN-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSPLAN-PSPEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCSPLAN-AUFNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSPLAN-AUFNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_WCSPLAN-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSPLAN-VORNR.
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_WCSPLAN_STR, 
PSPEL TYPE STRING,
AUFNT TYPE STRING,
VORNR TYPE STRING,
BDATE TYPE STRING,
BTIME TYPE STRING,
EDATE TYPE STRING,
ETIME TYPE STRING,
TSDATE TYPE STRING,
TSTIME TYPE STRING,
TFDATE TYPE STRING,
TFTIME TYPE STRING,
ESDATE TYPE STRING,
ESTIME TYPE STRING,
EFDATE TYPE STRING,
EFTIME TYPE STRING,
LSDATE TYPE STRING,
LSTIME TYPE STRING,
LFDATE TYPE STRING,
LFTIME TYPE STRING,
PSDATE TYPE STRING,
PSTIME TYPE STRING,
PFDATE TYPE STRING,
PFTIME TYPE STRING,
ASDATE TYPE STRING,
ASTIME TYPE STRING,
AFDATE TYPE STRING,
AFTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCSPLAN_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_WCSPLAN_STR-PSPEL sy-vline 
WA_WCSPLAN_STR-AUFNT sy-vline 
WA_WCSPLAN_STR-VORNR sy-vline 
WA_WCSPLAN_STR-BDATE sy-vline 
WA_WCSPLAN_STR-BTIME sy-vline 
WA_WCSPLAN_STR-EDATE sy-vline 
WA_WCSPLAN_STR-ETIME sy-vline 
WA_WCSPLAN_STR-TSDATE sy-vline 
WA_WCSPLAN_STR-TSTIME sy-vline 
WA_WCSPLAN_STR-TFDATE sy-vline 
WA_WCSPLAN_STR-TFTIME sy-vline 
WA_WCSPLAN_STR-ESDATE sy-vline 
WA_WCSPLAN_STR-ESTIME sy-vline 
WA_WCSPLAN_STR-EFDATE sy-vline 
WA_WCSPLAN_STR-EFTIME sy-vline 
WA_WCSPLAN_STR-LSDATE sy-vline 
WA_WCSPLAN_STR-LSTIME sy-vline 
WA_WCSPLAN_STR-LFDATE sy-vline 
WA_WCSPLAN_STR-LFTIME sy-vline 
WA_WCSPLAN_STR-PSDATE sy-vline 
WA_WCSPLAN_STR-PSTIME sy-vline 
WA_WCSPLAN_STR-PFDATE sy-vline 
WA_WCSPLAN_STR-PFTIME sy-vline 
WA_WCSPLAN_STR-ASDATE sy-vline 
WA_WCSPLAN_STR-ASTIME sy-vline 
WA_WCSPLAN_STR-AFDATE sy-vline 
WA_WCSPLAN_STR-AFTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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