ABAP Select data from SAP table /SAPAPO/PPOCON into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/PPOCON 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 /SAPAPO/PPOCON. 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 /SAPAPO/PPOCON 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_/SAPAPO/PPOCON TYPE STANDARD TABLE OF /SAPAPO/PPOCON,
      WA_/SAPAPO/PPOCON TYPE /SAPAPO/PPOCON,
      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: </SAPAPO/PPOCON> TYPE /SAPAPO/PPOCON.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/PPOCON
  INTO TABLE IT_/SAPAPO/PPOCON.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/PPOCON
*  INTO TABLE @DATA(IT_/SAPAPO/PPOCON2).
*--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_/SAPAPO/PPOCON INDEX 1 INTO DATA(WA_/SAPAPO/PPOCON2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/PPOCON ASSIGNING </SAPAPO/PPOCON>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/PPOCON>-MANDT = 1.
</SAPAPO/PPOCON>-SESSIONID = 1.
</SAPAPO/PPOCON>-LINE_NO = 1.
</SAPAPO/PPOCON>-CSTID = 1.
</SAPAPO/PPOCON>-AGTYP = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/PPOCON INTO WA_/SAPAPO/PPOCON.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/PPOCON-LOBND, sy-vline,
  WA_/SAPAPO/PPOCON-TAVAL, sy-vline,
  WA_/SAPAPO/PPOCON-UPBND, sy-vline,
  WA_/SAPAPO/PPOCON-INITV, sy-vline,
  WA_/SAPAPO/PPOCON-INITD, sy-vline,
  WA_/SAPAPO/PPOCON-LOTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/PPOCON 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_/SAPAPO/PPOCON 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_/SAPAPO/PPOCON INTO WA_/SAPAPO/PPOCON.


*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_/SAPAPO/PPOCON_STR, 
MANDT TYPE STRING,
SESSIONID TYPE STRING,
LINE_NO TYPE STRING,
CSTID TYPE STRING,
AGTYP TYPE STRING,
LOBND TYPE STRING,
TAVAL TYPE STRING,
UPBND TYPE STRING,
INITV TYPE STRING,
INITD TYPE STRING,
LOTYP TYPE STRING,
TATYP TYPE STRING,
UPTYP TYPE STRING,
LOPEN TYPE STRING,
TLPEN TYPE STRING,
TUPEN TYPE STRING,
UPPEN TYPE STRING,
DECO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/PPOCON_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_/SAPAPO/PPOCON_STR-MANDT sy-vline 
WA_/SAPAPO/PPOCON_STR-SESSIONID sy-vline 
WA_/SAPAPO/PPOCON_STR-LINE_NO sy-vline 
WA_/SAPAPO/PPOCON_STR-CSTID sy-vline 
WA_/SAPAPO/PPOCON_STR-AGTYP sy-vline 
WA_/SAPAPO/PPOCON_STR-LOBND sy-vline 
WA_/SAPAPO/PPOCON_STR-TAVAL sy-vline 
WA_/SAPAPO/PPOCON_STR-UPBND sy-vline 
WA_/SAPAPO/PPOCON_STR-INITV sy-vline 
WA_/SAPAPO/PPOCON_STR-INITD sy-vline 
WA_/SAPAPO/PPOCON_STR-LOTYP sy-vline 
WA_/SAPAPO/PPOCON_STR-TATYP sy-vline 
WA_/SAPAPO/PPOCON_STR-UPTYP sy-vline 
WA_/SAPAPO/PPOCON_STR-LOPEN sy-vline 
WA_/SAPAPO/PPOCON_STR-TLPEN sy-vline 
WA_/SAPAPO/PPOCON_STR-TUPEN sy-vline 
WA_/SAPAPO/PPOCON_STR-UPPEN sy-vline 
WA_/SAPAPO/PPOCON_STR-DECO sy-vline      INTO ld_text SEPARATED BY SPACE.

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