ABAP Select data from SAP table REOR_PERM_OCC_CAPACITY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REOR_PERM_OCC_CAPACITY
*  INTO TABLE @DATA(IT_REOR_PERM_OCC_CAPACITY2).
*--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_REOR_PERM_OCC_CAPACITY INDEX 1 INTO DATA(WA_REOR_PERM_OCC_CAPACITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REOR_PERM_OCC_CAPACITY>-OBJNROO = 1.
<REOR_PERM_OCC_CAPACITY>-VALIDFROM = 1.
<REOR_PERM_OCC_CAPACITY>-VALIDTO = 1.
<REOR_PERM_OCC_CAPACITY>-CAPACITY = 1.
<REOR_PERM_OCC_CAPACITY>-CAPAVAILABLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REOR_PERM_OCC_CAPACITY-CAPOCCUPIED, sy-vline,
  WA_REOR_PERM_OCC_CAPACITY-CAPUNIT, sy-vline,
  WA_REOR_PERM_OCC_CAPACITY-MSVALUE02, sy-vline,
  WA_REOR_PERM_OCC_CAPACITY-MSUNIT02, sy-vline,
  WA_REOR_PERM_OCC_CAPACITY-MSVALUE03, sy-vline,
  WA_REOR_PERM_OCC_CAPACITY-MSUNIT03, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REOR_PERM_OCC_CAPACITY 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_REOR_PERM_OCC_CAPACITY 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_REOR_PERM_OCC_CAPACITY INTO WA_REOR_PERM_OCC_CAPACITY.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REOR_PERM_OCC_CAPACITY-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_PERM_OCC_CAPACITY-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MSUNIT02
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REOR_PERM_OCC_CAPACITY-MSUNIT02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_PERM_OCC_CAPACITY-MSUNIT02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MSUNIT03
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REOR_PERM_OCC_CAPACITY-MSUNIT03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_PERM_OCC_CAPACITY-MSUNIT03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MSUNIT04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REOR_PERM_OCC_CAPACITY-MSUNIT04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_PERM_OCC_CAPACITY-MSUNIT04.
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_REOR_PERM_OCC_CAPACITY_STR, 
OBJNROO TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
CAPACITY TYPE STRING,
CAPAVAILABLE TYPE STRING,
CAPOCCUPIED TYPE STRING,
CAPUNIT TYPE STRING,
MSVALUE02 TYPE STRING,
MSUNIT02 TYPE STRING,
MSVALUE03 TYPE STRING,
MSUNIT03 TYPE STRING,
MSVALUE04 TYPE STRING,
MSUNIT04 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REOR_PERM_OCC_CAPACITY_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_REOR_PERM_OCC_CAPACITY_STR-OBJNROO sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-VALIDFROM sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-VALIDTO sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-CAPACITY sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-CAPAVAILABLE sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-CAPOCCUPIED sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-CAPUNIT sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-MSVALUE02 sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-MSUNIT02 sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-MSVALUE03 sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-MSUNIT03 sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-MSVALUE04 sy-vline 
WA_REOR_PERM_OCC_CAPACITY_STR-MSUNIT04 sy-vline      INTO ld_text SEPARATED BY SPACE.

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