ABAP Select data from SAP table PAEP_PACKAGE_COMPONENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAEP_PACKAGE_COMPONENT
*  INTO TABLE @DATA(IT_PAEP_PACKAGE_COMPONENT2).
*--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_PAEP_PACKAGE_COMPONENT INDEX 1 INTO DATA(WA_PAEP_PACKAGE_COMPONENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAEP_PACKAGE_COMPONENT>-SCOMP = 1.
<PAEP_PACKAGE_COMPONENT>-STEXT = 1.
<PAEP_PACKAGE_COMPONENT>-INFTY = 1.
<PAEP_PACKAGE_COMPONENT>-SUBTY = 1.
<PAEP_PACKAGE_COMPONENT>-LGART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAEP_PACKAGE_COMPONENT-NEIDX, sy-vline,
  WA_PAEP_PACKAGE_COMPONENT-NEPCT, sy-vline,
  WA_PAEP_PACKAGE_COMPONENT-ZEINH, sy-vline,
  WA_PAEP_PACKAGE_COMPONENT-EITXT, sy-vline,
  WA_PAEP_PACKAGE_COMPONENT-NEAMT, sy-vline,
  WA_PAEP_PACKAGE_COMPONENT-NECAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAEP_PACKAGE_COMPONENT 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_PAEP_PACKAGE_COMPONENT 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_PAEP_PACKAGE_COMPONENT INTO WA_PAEP_PACKAGE_COMPONENT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PAEP_PACKAGE_COMPONENT_STR, 
SCOMP TYPE STRING,
STEXT TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
LGART TYPE STRING,
NEIDX TYPE STRING,
NEPCT TYPE STRING,
ZEINH TYPE STRING,
EITXT TYPE STRING,
NEAMT TYPE STRING,
NECAT TYPE STRING,
DSEQU TYPE STRING,
CSEQU TYPE STRING,
IOPER TYPE STRING,
CURRC TYPE STRING,
COLOR TYPE STRING,
INDBW TYPE STRING,
ZDATE TYPE STRING,
ZFPER TYPE STRING,
ZANZL TYPE STRING,
ZEINZ TYPE STRING,
UWDAT TYPE STRING,
PREAS TYPE STRING,
ZUORD TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
OCRSN TYPE STRING,
EFFDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAEP_PACKAGE_COMPONENT_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_PAEP_PACKAGE_COMPONENT_STR-SCOMP sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-STEXT sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-INFTY sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-SUBTY sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-LGART sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-NEIDX sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-NEPCT sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-ZEINH sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-EITXT sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-NEAMT sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-NECAT sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-DSEQU sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-CSEQU sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-IOPER sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-CURRC sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-COLOR sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-INDBW sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-ZDATE sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-ZFPER sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-ZANZL sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-ZEINZ sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-UWDAT sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-PREAS sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-ZUORD sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-PAYTY sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-PAYID sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-OCRSN sy-vline 
WA_PAEP_PACKAGE_COMPONENT_STR-EFFDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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