ABAP Select data from SAP table PS9929 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS9929 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 PS9929. 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 PS9929 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_PS9929 TYPE STANDARD TABLE OF PS9929,
      WA_PS9929 TYPE PS9929,
      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: <PS9929> TYPE PS9929.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS9929.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS9929
  INTO TABLE IT_PS9929.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS9929
*  INTO TABLE @DATA(IT_PS99292).
*--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_PS9929 INDEX 1 INTO DATA(WA_PS99292).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS9929 ASSIGNING <PS9929>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS9929>-PY_SEQNR = 1.
<PS9929>-MOLGA = 1.
<PS9929>-ABKRS = 1.
<PS9929>-WAERS = 1.
<PS9929>-FPPER = 1.

ENDLOOP.

LOOP AT IT_PS9929 INTO WA_PS9929.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS9929-PAYTY, sy-vline,
  WA_PS9929-PAYID, sy-vline,
  WA_PS9929-PAY_DATE, sy-vline,
  WA_PS9929-ZZTEL0011B, sy-vline,
  WA_PS9929-ZZTEL0012B, sy-vline,
  WA_PS9929-ZZTEL0013B, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS9929 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_PS9929 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_PS9929 INTO WA_PS9929.


*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_PS9929_STR, 
PY_SEQNR TYPE STRING,
MOLGA TYPE STRING,
ABKRS TYPE STRING,
WAERS TYPE STRING,
FPPER TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
PAY_DATE TYPE STRING,
ZZTEL0011B TYPE STRING,
ZZTEL0012B TYPE STRING,
ZZTEL0013B TYPE STRING,
ZZTEL0014B TYPE STRING,
ZZTEL0015B TYPE STRING,
ZZTEL0016B TYPE STRING,
ZZTEL0017B TYPE STRING,
ZZTEL0018B TYPE STRING,
ZZTEL0019B TYPE STRING,
ZZTEL0007B TYPE STRING,
ZZTEL0008B TYPE STRING,
ZZTEL0010B TYPE STRING,
ZZTEL0020B TYPE STRING,
ZZTEL0021B TYPE STRING,
ZZTEL0022B TYPE STRING,
ZZTEL0023B TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS9929_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_PS9929_STR-PY_SEQNR sy-vline 
WA_PS9929_STR-MOLGA sy-vline 
WA_PS9929_STR-ABKRS sy-vline 
WA_PS9929_STR-WAERS sy-vline 
WA_PS9929_STR-FPPER sy-vline 
WA_PS9929_STR-PAYTY sy-vline 
WA_PS9929_STR-PAYID sy-vline 
WA_PS9929_STR-PAY_DATE sy-vline 
WA_PS9929_STR-ZZTEL0011B sy-vline 
WA_PS9929_STR-ZZTEL0012B sy-vline 
WA_PS9929_STR-ZZTEL0013B sy-vline 
WA_PS9929_STR-ZZTEL0014B sy-vline 
WA_PS9929_STR-ZZTEL0015B sy-vline 
WA_PS9929_STR-ZZTEL0016B sy-vline 
WA_PS9929_STR-ZZTEL0017B sy-vline 
WA_PS9929_STR-ZZTEL0018B sy-vline 
WA_PS9929_STR-ZZTEL0019B sy-vline 
WA_PS9929_STR-ZZTEL0007B sy-vline 
WA_PS9929_STR-ZZTEL0008B sy-vline 
WA_PS9929_STR-ZZTEL0010B sy-vline 
WA_PS9929_STR-ZZTEL0020B sy-vline 
WA_PS9929_STR-ZZTEL0021B sy-vline 
WA_PS9929_STR-ZZTEL0022B sy-vline 
WA_PS9929_STR-ZZTEL0023B sy-vline      INTO ld_text SEPARATED BY SPACE.

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