ABAP Select data from SAP table PADP1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PADP1 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 PADP1. 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 PADP1 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_PADP1 TYPE STANDARD TABLE OF PADP1,
      WA_PADP1 TYPE PADP1,
      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: <PADP1> TYPE PADP1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PADP1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PADP1
  INTO TABLE IT_PADP1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PADP1
*  INTO TABLE @DATA(IT_PADP12).
*--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_PADP1 INDEX 1 INTO DATA(WA_PADP12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PADP1 ASSIGNING <PADP1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PADP1>-BUTGR = 1.
<PADP1>-BETRG = 1.
<PADP1>-CURCY = 1.
<PADP1>-FREQU = 1.
<PADP1>-AMNT = 1.

ENDLOOP.

LOOP AT IT_PADP1 INTO WA_PADP1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PADP1-UNIT, sy-vline,
  WA_PADP1-WKAVG, sy-vline,
  WA_PADP1-AKTE, sy-vline,
  WA_PADP1-KOMM, sy-vline,
  WA_PADP1-KWERTPM, sy-vline,
  WA_PADP1-KAMNTPM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PADP1 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_PADP1 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_PADP1 INTO WA_PADP1.


*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_PADP1_STR, 
BUTGR TYPE STRING,
BETRG TYPE STRING,
CURCY TYPE STRING,
FREQU TYPE STRING,
AMNT TYPE STRING,
UNIT TYPE STRING,
WKAVG TYPE STRING,
AKTE TYPE STRING,
KOMM TYPE STRING,
KWERTPM TYPE STRING,
KAMNTPM TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
CONV_METHOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PADP1_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_PADP1_STR-BUTGR sy-vline 
WA_PADP1_STR-BETRG sy-vline 
WA_PADP1_STR-CURCY sy-vline 
WA_PADP1_STR-FREQU sy-vline 
WA_PADP1_STR-AMNT sy-vline 
WA_PADP1_STR-UNIT sy-vline 
WA_PADP1_STR-WKAVG sy-vline 
WA_PADP1_STR-AKTE sy-vline 
WA_PADP1_STR-KOMM sy-vline 
WA_PADP1_STR-KWERTPM sy-vline 
WA_PADP1_STR-KAMNTPM sy-vline 
WA_PADP1_STR-BEGDA sy-vline 
WA_PADP1_STR-ENDDA sy-vline 
WA_PADP1_STR-CONV_METHOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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