ABAP Select data from SAP table DIWPS_WA_WORKPACKAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIWPS_WA_WORKPACKAGE
*  INTO TABLE @DATA(IT_DIWPS_WA_WORKPACKAGE2).
*--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_DIWPS_WA_WORKPACKAGE INDEX 1 INTO DATA(WA_DIWPS_WA_WORKPACKAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIWPS_WA_WORKPACKAGE>-MANDT = 1.
<DIWPS_WA_WORKPACKAGE>-WPID = 1.
<DIWPS_WA_WORKPACKAGE>-NOTIFID = 1.
<DIWPS_WA_WORKPACKAGE>-TL_COUNTER = 1.
<DIWPS_WA_WORKPACKAGE>-PARENT_PLNTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIWPS_WA_WORKPACKAGE-PARENT_PLNNR, sy-vline,
  WA_DIWPS_WA_WORKPACKAGE-PARENT_PLNAL, sy-vline,
  WA_DIWPS_WA_WORKPACKAGE-PARENT_ZAEHL, sy-vline,
  WA_DIWPS_WA_WORKPACKAGE-PLNTY, sy-vline,
  WA_DIWPS_WA_WORKPACKAGE-PLNNR, sy-vline,
  WA_DIWPS_WA_WORKPACKAGE-PLNAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIWPS_WA_WORKPACKAGE 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_DIWPS_WA_WORKPACKAGE 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_DIWPS_WA_WORKPACKAGE INTO WA_DIWPS_WA_WORKPACKAGE.


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

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

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

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

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

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

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

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

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

*Conversion exit MATN1, internal->external for field ISTRU
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_DIWPS_WA_WORKPACKAGE-ISTRU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIWPS_WA_WORKPACKAGE-ISTRU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_DIWPS_WA_WORKPACKAGE-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIWPS_WA_WORKPACKAGE-ATINN.
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_DIWPS_WA_WORKPACKAGE_STR, 
MANDT TYPE STRING,
WPID TYPE STRING,
NOTIFID TYPE STRING,
TL_COUNTER TYPE STRING,
PARENT_PLNTY TYPE STRING,
PARENT_PLNNR TYPE STRING,
PARENT_PLNAL TYPE STRING,
PARENT_ZAEHL TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
ZAEHL TYPE STRING,
NID_SUPTL TYPE STRING,
NID_CURTL TYPE STRING,
FET_FLG TYPE STRING,
EXPLOSION_NO TYPE STRING,
ORDER_NO TYPE STRING,
QMEL_ORDER_FLG TYPE STRING,
ORDER_STATUS_FLG TYPE STRING,
QMART TYPE STRING,
EXCL_FLG TYPE STRING,
NO_EXEC_FLG TYPE STRING,
ELIMSUBTR_FLG TYPE STRING,
DEL_FLG TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
ARBEI TYPE STRING,
ARBEH TYPE STRING,
ANZZL TYPE STRING,
DAUNO TYPE STRING,
DAUNE TYPE STRING,
PRZNT TYPE STRING,
AUFKT TYPE STRING,
LARNT TYPE STRING,
KTSCH TYPE STRING,
ISTRU TYPE STRING,
LOANZ TYPE STRING,
LOGRP TYPE STRING,
LOART TYPE STRING,
ATINN TYPE STRING,
ATNAM TYPE STRING,
ATWRT TYPE STRING,
TABNAM TYPE STRING,
FIELDNAM TYPE STRING,
DEL_FLAG TYPE STRING,
DESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIWPS_WA_WORKPACKAGE_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_DIWPS_WA_WORKPACKAGE_STR-MANDT sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-WPID sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-NOTIFID sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-TL_COUNTER sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PARENT_PLNTY sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PARENT_PLNNR sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PARENT_PLNAL sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PARENT_ZAEHL sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PLNTY sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PLNNR sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PLNAL sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ZAEHL sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-NID_SUPTL sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-NID_CURTL sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-FET_FLG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-EXPLOSION_NO sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ORDER_NO sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-QMEL_ORDER_FLG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ORDER_STATUS_FLG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-QMART sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-EXCL_FLG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-NO_EXEC_FLG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ELIMSUBTR_FLG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-DEL_FLG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-AENAM sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-AEDAT sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ARBEI sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ARBEH sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ANZZL sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-DAUNO sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-DAUNE sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-PRZNT sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-AUFKT sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-LARNT sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-KTSCH sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ISTRU sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-LOANZ sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-LOGRP sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-LOART sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ATINN sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ATNAM sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-ATWRT sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-TABNAM sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-FIELDNAM sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-DEL_FLAG sy-vline 
WA_DIWPS_WA_WORKPACKAGE_STR-DESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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