ABAP Select data from SAP table AEPWORKPACKAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AEPWORKPACKAGE
*  INTO TABLE @DATA(IT_AEPWORKPACKAGE2).
*--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_AEPWORKPACKAGE INDEX 1 INTO DATA(WA_AEPWORKPACKAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AEPWORKPACKAGE>-MANDT = 1.
<AEPWORKPACKAGE>-WORKPACKAGE = 1.
<AEPWORKPACKAGE>-ENGAGEMENTPROJECT = 1.
<AEPWORKPACKAGE>-WORKPACKAGEUUID = 1.
<AEPWORKPACKAGE>-WORKPACKAGENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AEPWORKPACKAGE-WORKPACKAGESTARTDATE, sy-vline,
  WA_AEPWORKPACKAGE-WORKPACKAGEENDDATE, sy-vline,
  WA_AEPWORKPACKAGE-LASTCHANGEDATETIME, sy-vline,
  WA_AEPWORKPACKAGE-CREATIONDATETIME, sy-vline,
  WA_AEPWORKPACKAGE-WORKPACKAGETYPE, sy-vline,
  WA_AEPWORKPACKAGE-ENGAGEMENTPROJECTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AEPWORKPACKAGE 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_AEPWORKPACKAGE 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_AEPWORKPACKAGE INTO WA_AEPWORKPACKAGE.


*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 COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AEPWORKPACKAGE-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AEPWORKPACKAGE-COSTCENTER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field WORKPACKAGEUNITUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AEPWORKPACKAGE-WORKPACKAGEUNITUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AEPWORKPACKAGE-WORKPACKAGEUNITUOM.
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_AEPWORKPACKAGE_STR, 
MANDT TYPE STRING,
WORKPACKAGE TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,
WORKPACKAGEUUID TYPE STRING,
WORKPACKAGENAME TYPE STRING,
WORKPACKAGESTARTDATE TYPE STRING,
WORKPACKAGEENDDATE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CREATIONDATETIME TYPE STRING,
WORKPACKAGETYPE TYPE STRING,
ENGAGEMENTPROJECTTYPE TYPE STRING,
ENGAGEMENTPROJECTSERVICEORG TYPE STRING,
ENGAGEMENTPROJECTCATEGORY TYPE STRING,
PROJECTPROFILECODE TYPE STRING,
PROJECTVISIBILITY TYPE STRING,
COMPANYCODE TYPE STRING,
COSTCENTER TYPE STRING,
PROFITCENTER TYPE STRING,
WORKPACKAGEUNIT TYPE STRING,
WORKPACKAGEUNITUOM TYPE STRING,
PLANUNITQUANTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AEPWORKPACKAGE_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_AEPWORKPACKAGE_STR-MANDT sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGE sy-vline 
WA_AEPWORKPACKAGE_STR-ENGAGEMENTPROJECT sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGEUUID sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGENAME sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGESTARTDATE sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGEENDDATE sy-vline 
WA_AEPWORKPACKAGE_STR-LASTCHANGEDATETIME sy-vline 
WA_AEPWORKPACKAGE_STR-CREATIONDATETIME sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGETYPE sy-vline 
WA_AEPWORKPACKAGE_STR-ENGAGEMENTPROJECTTYPE sy-vline 
WA_AEPWORKPACKAGE_STR-ENGAGEMENTPROJECTSERVICEORG sy-vline 
WA_AEPWORKPACKAGE_STR-ENGAGEMENTPROJECTCATEGORY sy-vline 
WA_AEPWORKPACKAGE_STR-PROJECTPROFILECODE sy-vline 
WA_AEPWORKPACKAGE_STR-PROJECTVISIBILITY sy-vline 
WA_AEPWORKPACKAGE_STR-COMPANYCODE sy-vline 
WA_AEPWORKPACKAGE_STR-COSTCENTER sy-vline 
WA_AEPWORKPACKAGE_STR-PROFITCENTER sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGEUNIT sy-vline 
WA_AEPWORKPACKAGE_STR-WORKPACKAGEUNITUOM sy-vline 
WA_AEPWORKPACKAGE_STR-PLANUNITQUANTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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