ABAP Select data from SAP table /SCWM/EPD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/EPD 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 /SCWM/EPD. 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 /SCWM/EPD 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_/SCWM/EPD TYPE STANDARD TABLE OF /SCWM/EPD,
      WA_/SCWM/EPD TYPE /SCWM/EPD,
      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: </SCWM/EPD> TYPE /SCWM/EPD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/EPD
  INTO TABLE IT_/SCWM/EPD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/EPD
*  INTO TABLE @DATA(IT_/SCWM/EPD2).
*--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_/SCWM/EPD INDEX 1 INTO DATA(WA_/SCWM/EPD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/EPD ASSIGNING </SCWM/EPD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/EPD>-MANDT = 1.
</SCWM/EPD>-EPD_GUID = 1.
</SCWM/EPD>-EPD_NO = 1.
</SCWM/EPD>-STATUS = 1.
</SCWM/EPD>-PRR_GUID = 1.

ENDLOOP.

LOOP AT IT_/SCWM/EPD INTO WA_/SCWM/EPD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/EPD-TZONE, sy-vline,
  WA_/SCWM/EPD-PERNR, sy-vline,
  WA_/SCWM/EPD-HR_BSKEY, sy-vline,
  WA_/SCWM/EPD-VALID_AT, sy-vline,
  WA_/SCWM/EPD-EWL_BEGTS, sy-vline,
  WA_/SCWM/EPD-EWL_ENDTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/EPD 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_/SCWM/EPD 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_/SCWM/EPD INTO WA_/SCWM/EPD.


*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 ALPH0, internal->external for field EPD_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-EPD_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-EPD_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VALID_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-VALID_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-VALID_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field EWL_BEGTS
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-EWL_BEGTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-EWL_BEGTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field EWL_ENDTS
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-EWL_ENDTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-EWL_ENDTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CREATED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-CREATED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-CREATED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-CHANGED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field RELEASED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-RELEASED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-RELEASED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field PASSED_ON_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-PASSED_ON_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-PASSED_ON_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field DELETED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/EPD-DELETED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/EPD-DELETED_AT.
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_/SCWM/EPD_STR, 
MANDT TYPE STRING,
EPD_GUID TYPE STRING,
EPD_NO TYPE STRING,
STATUS TYPE STRING,
PRR_GUID TYPE STRING,
TZONE TYPE STRING,
PERNR TYPE STRING,
HR_BSKEY TYPE STRING,
VALID_AT TYPE STRING,
EWL_BEGTS TYPE STRING,
EWL_ENDTS TYPE STRING,
PLAN_HRS TYPE STRING,
PLAN_ADJ_HRS TYPE STRING,
ACT_HRS TYPE STRING,
AVAIL_HRS TYPE STRING,
ADJUST_HRS TYPE STRING,
ORIGIN TYPE STRING,
WAGETYPE TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
AMOUNT_ORIG TYPE STRING,
REFNR TYPE STRING,
CREATED_AT TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
RELEASED_AT TYPE STRING,
RELEASED_BY TYPE STRING,
PASSED_ON_AT TYPE STRING,
PASSED_ON_BY TYPE STRING,
DELETED_AT TYPE STRING,
DELETED_BY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/EPD_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_/SCWM/EPD_STR-MANDT sy-vline 
WA_/SCWM/EPD_STR-EPD_GUID sy-vline 
WA_/SCWM/EPD_STR-EPD_NO sy-vline 
WA_/SCWM/EPD_STR-STATUS sy-vline 
WA_/SCWM/EPD_STR-PRR_GUID sy-vline 
WA_/SCWM/EPD_STR-TZONE sy-vline 
WA_/SCWM/EPD_STR-PERNR sy-vline 
WA_/SCWM/EPD_STR-HR_BSKEY sy-vline 
WA_/SCWM/EPD_STR-VALID_AT sy-vline 
WA_/SCWM/EPD_STR-EWL_BEGTS sy-vline 
WA_/SCWM/EPD_STR-EWL_ENDTS sy-vline 
WA_/SCWM/EPD_STR-PLAN_HRS sy-vline 
WA_/SCWM/EPD_STR-PLAN_ADJ_HRS sy-vline 
WA_/SCWM/EPD_STR-ACT_HRS sy-vline 
WA_/SCWM/EPD_STR-AVAIL_HRS sy-vline 
WA_/SCWM/EPD_STR-ADJUST_HRS sy-vline 
WA_/SCWM/EPD_STR-ORIGIN sy-vline 
WA_/SCWM/EPD_STR-WAGETYPE sy-vline 
WA_/SCWM/EPD_STR-AMOUNT sy-vline 
WA_/SCWM/EPD_STR-CURRENCY sy-vline 
WA_/SCWM/EPD_STR-AMOUNT_ORIG sy-vline 
WA_/SCWM/EPD_STR-REFNR sy-vline 
WA_/SCWM/EPD_STR-CREATED_AT sy-vline 
WA_/SCWM/EPD_STR-CREATED_BY sy-vline 
WA_/SCWM/EPD_STR-CHANGED_AT sy-vline 
WA_/SCWM/EPD_STR-CHANGED_BY sy-vline 
WA_/SCWM/EPD_STR-RELEASED_AT sy-vline 
WA_/SCWM/EPD_STR-RELEASED_BY sy-vline 
WA_/SCWM/EPD_STR-PASSED_ON_AT sy-vline 
WA_/SCWM/EPD_STR-PASSED_ON_BY sy-vline 
WA_/SCWM/EPD_STR-DELETED_AT sy-vline 
WA_/SCWM/EPD_STR-DELETED_BY sy-vline      INTO ld_text SEPARATED BY SPACE.

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