ABAP Select data from SAP table P0195_AF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0195_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 P0195_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 P0195_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_P0195_AF TYPE STANDARD TABLE OF P0195_AF,
      WA_P0195_AF TYPE P0195_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: <P0195_AF> TYPE P0195_AF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0195_AF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0195_AF
  INTO TABLE IT_P0195_AF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0195_AF
*  INTO TABLE @DATA(IT_P0195_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_P0195_AF INDEX 1 INTO DATA(WA_P0195_AF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0195_AF ASSIGNING <P0195_AF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0195_AF>-TTDTE = 1.
<P0195_AF>-RMBAL = 1.
<P0195_AF>-YTDTE = 1.
<P0195_AF>-MTDTE = 1.
<P0195_AF>-PRAMT = 1.

ENDLOOP.

LOOP AT IT_P0195_AF INTO WA_P0195_AF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0195_AF-CSNUM, sy-vline,
  WA_P0195_AF-SQNUM, sy-vline,
  WA_P0195_AF-RLSDT, sy-vline,
  WA_P0195_AF-ORIGN, sy-vline,
  WA_P0195_AF-CATEG, sy-vline,
  WA_P0195_AF-VNDCO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0195_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_P0195_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_P0195_AF INTO WA_P0195_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.

*Conversion exit ALPHA, internal->external for field VNDCO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P0195_AF-VNDCO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P0195_AF-VNDCO.
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_P0195_AF_STR, 
TTDTE TYPE STRING,
RMBAL TYPE STRING,
YTDTE TYPE STRING,
MTDTE TYPE STRING,
PRAMT TYPE STRING,
CSNUM TYPE STRING,
SQNUM TYPE STRING,
RLSDT TYPE STRING,
ORIGN TYPE STRING,
CATEG TYPE STRING,
VNDCO TYPE STRING,
ORICO TYPE STRING,
ORINM TYPE STRING,
GRSTS TYPE STRING,
FNAME TYPE STRING,
DBEGD TYPE STRING,
DENDD TYPE STRING,
PLAIN TYPE STRING,
VNDNM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0195_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_P0195_AF_STR-TTDTE sy-vline 
WA_P0195_AF_STR-RMBAL sy-vline 
WA_P0195_AF_STR-YTDTE sy-vline 
WA_P0195_AF_STR-MTDTE sy-vline 
WA_P0195_AF_STR-PRAMT sy-vline 
WA_P0195_AF_STR-CSNUM sy-vline 
WA_P0195_AF_STR-SQNUM sy-vline 
WA_P0195_AF_STR-RLSDT sy-vline 
WA_P0195_AF_STR-ORIGN sy-vline 
WA_P0195_AF_STR-CATEG sy-vline 
WA_P0195_AF_STR-VNDCO sy-vline 
WA_P0195_AF_STR-ORICO sy-vline 
WA_P0195_AF_STR-ORINM sy-vline 
WA_P0195_AF_STR-GRSTS sy-vline 
WA_P0195_AF_STR-FNAME sy-vline 
WA_P0195_AF_STR-DBEGD sy-vline 
WA_P0195_AF_STR-DENDD sy-vline 
WA_P0195_AF_STR-PLAIN sy-vline 
WA_P0195_AF_STR-VNDNM sy-vline      INTO ld_text SEPARATED BY SPACE.

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