ABAP Select data from SAP table PS3329 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS3329 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 PS3329. 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 PS3329 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_PS3329 TYPE STANDARD TABLE OF PS3329,
      WA_PS3329 TYPE PS3329,
      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: <PS3329> TYPE PS3329.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS3329.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS3329
  INTO TABLE IT_PS3329.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS3329
*  INTO TABLE @DATA(IT_PS33292).
*--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_PS3329 INDEX 1 INTO DATA(WA_PS33292).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS3329 ASSIGNING <PS3329>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS3329>-ESTDT = 1.
<PS3329>-PUSTY = 1.
<PS3329>-PUSAC = 1.
<PS3329>-LGART = 1.
<PS3329>-DPOIT = 1.

ENDLOOP.

LOOP AT IT_PS3329 INTO WA_PS3329.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS3329-REAMT, sy-vline,
  WA_PS3329-PUNRS, sy-vline,
  WA_PS3329-AUTHY, sy-vline,
  WA_PS3329-DCSTA, sy-vline,
  WA_PS3329-LSREA, sy-vline,
  WA_PS3329-LSDTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS3329 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_PS3329 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_PS3329 INTO WA_PS3329.


*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_PS3329_STR, 
ESTDT TYPE STRING,
PUSTY TYPE STRING,
PUSAC TYPE STRING,
LGART TYPE STRING,
DPOIT TYPE STRING,
REAMT TYPE STRING,
PUNRS TYPE STRING,
AUTHY TYPE STRING,
DCSTA TYPE STRING,
LSREA TYPE STRING,
LSDTE TYPE STRING,
VCATE TYPE STRING,
VIOID TYPE STRING,
SDOCU TYPE STRING,
SAUTH TYPE STRING,
SANCT TYPE STRING,
VCONT TYPE STRING,
PERCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS3329_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_PS3329_STR-ESTDT sy-vline 
WA_PS3329_STR-PUSTY sy-vline 
WA_PS3329_STR-PUSAC sy-vline 
WA_PS3329_STR-LGART sy-vline 
WA_PS3329_STR-DPOIT sy-vline 
WA_PS3329_STR-REAMT sy-vline 
WA_PS3329_STR-PUNRS sy-vline 
WA_PS3329_STR-AUTHY sy-vline 
WA_PS3329_STR-DCSTA sy-vline 
WA_PS3329_STR-LSREA sy-vline 
WA_PS3329_STR-LSDTE sy-vline 
WA_PS3329_STR-VCATE sy-vline 
WA_PS3329_STR-VIOID sy-vline 
WA_PS3329_STR-SDOCU sy-vline 
WA_PS3329_STR-SAUTH sy-vline 
WA_PS3329_STR-SANCT sy-vline 
WA_PS3329_STR-VCONT sy-vline 
WA_PS3329_STR-PERCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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