ABAP Select data from SAP table PS3352 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS3352 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 PS3352. 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 PS3352 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_PS3352 TYPE STANDARD TABLE OF PS3352,
      WA_PS3352 TYPE PS3352,
      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: <PS3352> TYPE PS3352.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS3352.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS3352
  INTO TABLE IT_PS3352.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS3352
*  INTO TABLE @DATA(IT_PS33522).
*--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_PS3352 INDEX 1 INTO DATA(WA_PS33522).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS3352 ASSIGNING <PS3352>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS3352>-ARFNM = 1.
<PS3352>-ARSNM = 1.
<PS3352>-ARTNM = 1.
<PS3352>-ARLNM = 1.
<PS3352>-VSNUM = 1.

ENDLOOP.

LOOP AT IT_PS3352 INTO WA_PS3352.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS3352-VSEXP, sy-vline,
  WA_PS3352-IQNUM, sy-vline,
  WA_PS3352-IQEXP, sy-vline,
  WA_PS3352-DLNUM, sy-vline,
  WA_PS3352-DLEXP, sy-vline,
  WA_PS3352-LPAPD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS3352 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_PS3352 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_PS3352 INTO WA_PS3352.


*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_PS3352_STR, 
ARFNM TYPE STRING,
ARSNM TYPE STRING,
ARTNM TYPE STRING,
ARLNM TYPE STRING,
VSNUM TYPE STRING,
VSEXP TYPE STRING,
IQNUM TYPE STRING,
IQEXP TYPE STRING,
DLNUM TYPE STRING,
DLEXP TYPE STRING,
LPAPD TYPE STRING,
KTART TYPE STRING,
VSISS TYPE STRING,
IQISS TYPE STRING,
DLISS TYPE STRING,
PSNUM TYPE STRING,
PSISS TYPE STRING,
PSEXP TYPE STRING,
DOCT1 TYPE STRING,
IDNUM TYPE STRING,
IDISS TYPE STRING,
IDEXP TYPE STRING,
LPAPQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS3352_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_PS3352_STR-ARFNM sy-vline 
WA_PS3352_STR-ARSNM sy-vline 
WA_PS3352_STR-ARTNM sy-vline 
WA_PS3352_STR-ARLNM sy-vline 
WA_PS3352_STR-VSNUM sy-vline 
WA_PS3352_STR-VSEXP sy-vline 
WA_PS3352_STR-IQNUM sy-vline 
WA_PS3352_STR-IQEXP sy-vline 
WA_PS3352_STR-DLNUM sy-vline 
WA_PS3352_STR-DLEXP sy-vline 
WA_PS3352_STR-LPAPD sy-vline 
WA_PS3352_STR-KTART sy-vline 
WA_PS3352_STR-VSISS sy-vline 
WA_PS3352_STR-IQISS sy-vline 
WA_PS3352_STR-DLISS sy-vline 
WA_PS3352_STR-PSNUM sy-vline 
WA_PS3352_STR-PSISS sy-vline 
WA_PS3352_STR-PSEXP sy-vline 
WA_PS3352_STR-DOCT1 sy-vline 
WA_PS3352_STR-IDNUM sy-vline 
WA_PS3352_STR-IDISS sy-vline 
WA_PS3352_STR-IDEXP sy-vline 
WA_PS3352_STR-LPAPQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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