ABAP Select data from SAP table PAK_PACKAGE_ATTRIBUTES_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAK_PACKAGE_ATTRIBUTES_ITEM
*  INTO TABLE @DATA(IT_PAK_PACKAGE_ATTRIBUTES_ITEM2).
*--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_PAK_PACKAGE_ATTRIBUTES_ITEM INDEX 1 INTO DATA(WA_PAK_PACKAGE_ATTRIBUTES_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAK_PACKAGE_ATTRIBUTES_ITEM>-DEVCLASS = 1.
<PAK_PACKAGE_ATTRIBUTES_ITEM>-KORRFLAG = 1.
<PAK_PACKAGE_ATTRIBUTES_ITEM>-AS4USER = 1.
<PAK_PACKAGE_ATTRIBUTES_ITEM>-PDEVCLASS = 1.
<PAK_PACKAGE_ATTRIBUTES_ITEM>-DLVUNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAK_PACKAGE_ATTRIBUTES_ITEM-COMPONENT, sy-vline,
  WA_PAK_PACKAGE_ATTRIBUTES_ITEM-NAMESPACE, sy-vline,
  WA_PAK_PACKAGE_ATTRIBUTES_ITEM-TPCLASS, sy-vline,
  WA_PAK_PACKAGE_ATTRIBUTES_ITEM-PARENTCL, sy-vline,
  WA_PAK_PACKAGE_ATTRIBUTES_ITEM-APPLICAT, sy-vline,
  WA_PAK_PACKAGE_ATTRIBUTES_ITEM-INTFPREFX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAK_PACKAGE_ATTRIBUTES_ITEM 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_PAK_PACKAGE_ATTRIBUTES_ITEM 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_PAK_PACKAGE_ATTRIBUTES_ITEM INTO WA_PAK_PACKAGE_ATTRIBUTES_ITEM.


*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 ISOLA, internal->external for field TADIR_MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PAK_PACKAGE_ATTRIBUTES_ITEM-TADIR_MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PAK_PACKAGE_ATTRIBUTES_ITEM-TADIR_MASTERLANG.
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_PAK_PACKAGE_ATTRIBUTES_ITEM_STR, 
DEVCLASS TYPE STRING,
KORRFLAG TYPE STRING,
AS4USER TYPE STRING,
PDEVCLASS TYPE STRING,
DLVUNIT TYPE STRING,
COMPONENT TYPE STRING,
NAMESPACE TYPE STRING,
TPCLASS TYPE STRING,
PARENTCL TYPE STRING,
APPLICAT TYPE STRING,
INTFPREFX TYPE STRING,
PACKTYPE TYPE STRING,
RESTRICTED TYPE STRING,
MAINPACK TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
PROJECT_GUID TYPE STRING,
PROJECT_PASSDOWN TYPE STRING,
IS_ENHANCEABLE TYPE STRING,
PACKAGE_KIND TYPE STRING,
ENHANCED_PACKAGE TYPE STRING,
ACCESS_OBJECT TYPE STRING,
DEFAULT_INTF TYPE STRING,
INHERIT_CLI_INTF TYPE STRING,
ENCAPSULATION TYPE STRING,
DCL_ENABLED TYPE STRING,
SUB_KEY TYPE STRING,
ALLOW_STATIC TYPE STRING,
SWITCH_ID TYPE STRING,
CHECK_RULE TYPE STRING,
TADIR_SRCSYSTEM TYPE STRING,
TADIR_AUTHOR TYPE STRING,
TADIR_MASTERLANG TYPE STRING,
TADIR_MASTERLANG_ISO_CODE TYPE STRING,
TADIR_MASTERLANG_DESCR TYPE STRING,
TADIR_CREATED_ON TYPE STRING,
DEVCLASS_DESCR TYPE STRING,
PARENTCL_DESCR TYPE STRING,
ACH_COMPONENT_ID TYPE STRING,
ACH_COMPONENT_DESCR TYPE STRING,
CPROJECT_ID TYPE STRING,
CPROJECT_ID_DESCR TYPE STRING,
CPROJECT_ID_INHERITED_FROM TYPE STRING,
SWITCH_ID_DESCR TYPE STRING,
PDEVCLASS_DESCR TYPE STRING,
DLVUNIT_DESCR TYPE STRING,
PACKTYPE_DESCR TYPE STRING,
MAINPACK_DESCR TYPE STRING,
PACKAGE_KIND_DESCR TYPE STRING,
ENCAPSULATION_DESCR TYPE STRING,
DCL_ENABLED_DESCR TYPE STRING,
EXT_ALIAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAK_PACKAGE_ATTRIBUTES_ITEM_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_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-DEVCLASS sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-KORRFLAG sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-AS4USER sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PDEVCLASS sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-DLVUNIT sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-COMPONENT sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-NAMESPACE sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-TPCLASS sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PARENTCL sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-APPLICAT sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-INTFPREFX sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PACKTYPE sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-RESTRICTED sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-MAINPACK sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CREATED_BY sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CREATED_ON sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CHANGED_BY sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CHANGED_ON sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PROJECT_GUID sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PROJECT_PASSDOWN sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-IS_ENHANCEABLE sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PACKAGE_KIND sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-ENHANCED_PACKAGE sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-ACCESS_OBJECT sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-DEFAULT_INTF sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-INHERIT_CLI_INTF sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-ENCAPSULATION sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-DCL_ENABLED sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-SUB_KEY sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-ALLOW_STATIC sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-SWITCH_ID sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CHECK_RULE sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-TADIR_SRCSYSTEM sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-TADIR_AUTHOR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-TADIR_MASTERLANG sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-TADIR_MASTERLANG_ISO_CODE sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-TADIR_MASTERLANG_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-TADIR_CREATED_ON sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-DEVCLASS_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PARENTCL_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-ACH_COMPONENT_ID sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-ACH_COMPONENT_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CPROJECT_ID sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CPROJECT_ID_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-CPROJECT_ID_INHERITED_FROM sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-SWITCH_ID_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PDEVCLASS_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-DLVUNIT_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PACKTYPE_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-MAINPACK_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-PACKAGE_KIND_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-ENCAPSULATION_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-DCL_ENABLED_DESCR sy-vline 
WA_PAK_PACKAGE_ATTRIBUTES_ITEM_STR-EXT_ALIAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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