ABAP Select data from SAP table P0169_AF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0169_AF 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 P0169_AF. 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 P0169_AF 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_P0169_AF TYPE STANDARD TABLE OF P0169_AF,
      WA_P0169_AF TYPE P0169_AF,
      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: <P0169_AF> TYPE P0169_AF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0169_AF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0169_AF
  INTO TABLE IT_P0169_AF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0169_AF
*  INTO TABLE @DATA(IT_P0169_AF2).
*--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_P0169_AF INDEX 1 INTO DATA(WA_P0169_AF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0169_AF ASSIGNING <P0169_AF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0169_AF>-EEPRE = 1.
<P0169_AF>-EEPST = 1.
<P0169_AF>-EETTL = 1.
<P0169_AF>-ERTTL = 1.
<P0169_AF>-PERIO = 1.

ENDLOOP.

LOOP AT IT_P0169_AF INTO WA_P0169_AF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0169_AF-CONDT, sy-vline,
  WA_P0169_AF-CURRE, sy-vline,
  WA_P0169_AF-ELIDA, sy-vline,
  WA_P0169_AF-BNCNT, sy-vline,
  WA_P0169_AF-CTCNT, sy-vline,
  WA_P0169_AF-INCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0169_AF 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_P0169_AF 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_P0169_AF INTO WA_P0169_AF.


*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_P0169_AF_STR, 
EEPRE TYPE STRING,
EEPST TYPE STRING,
EETTL TYPE STRING,
ERTTL TYPE STRING,
PERIO TYPE STRING,
CONDT TYPE STRING,
CURRE TYPE STRING,
ELIDA TYPE STRING,
BNCNT TYPE STRING,
CTCNT TYPE STRING,
INCNT TYPE STRING,
BEN_NAME TYPE STRING,
BEN_REL TYPE STRING,
BEN_PCT TYPE STRING,
CTG_NAME TYPE STRING,
CTG_REL TYPE STRING,
CTG_PCT TYPE STRING,
INV_NAME TYPE STRING,
INV_PCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0169_AF_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_P0169_AF_STR-EEPRE sy-vline 
WA_P0169_AF_STR-EEPST sy-vline 
WA_P0169_AF_STR-EETTL sy-vline 
WA_P0169_AF_STR-ERTTL sy-vline 
WA_P0169_AF_STR-PERIO sy-vline 
WA_P0169_AF_STR-CONDT sy-vline 
WA_P0169_AF_STR-CURRE sy-vline 
WA_P0169_AF_STR-ELIDA sy-vline 
WA_P0169_AF_STR-BNCNT sy-vline 
WA_P0169_AF_STR-CTCNT sy-vline 
WA_P0169_AF_STR-INCNT sy-vline 
WA_P0169_AF_STR-BEN_NAME sy-vline 
WA_P0169_AF_STR-BEN_REL sy-vline 
WA_P0169_AF_STR-BEN_PCT sy-vline 
WA_P0169_AF_STR-CTG_NAME sy-vline 
WA_P0169_AF_STR-CTG_REL sy-vline 
WA_P0169_AF_STR-CTG_PCT sy-vline 
WA_P0169_AF_STR-INV_NAME sy-vline 
WA_P0169_AF_STR-INV_PCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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