ABAP Select data from SAP table PS2052 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS2052 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 PS2052. 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 PS2052 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_PS2052 TYPE STANDARD TABLE OF PS2052,
      WA_PS2052 TYPE PS2052,
      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: <PS2052> TYPE PS2052.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS2052.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS2052
  INTO TABLE IT_PS2052.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS2052
*  INTO TABLE @DATA(IT_PS20522).
*--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_PS2052 INDEX 1 INTO DATA(WA_PS20522).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS2052 ASSIGNING <PS2052>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS2052>-BEGUZ = 1.
<PS2052>-ENDUZ = 1.
<PS2052>-VTKEN = 1.
<PS2052>-AWART = 1.
<PS2052>-ABWTG = 1.

ENDLOOP.

LOOP AT IT_PS2052 INTO WA_PS2052.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS2052-ABRTG, sy-vline,
  WA_PS2052-ABRST, sy-vline,
  WA_PS2052-KALTG, sy-vline,
  WA_PS2052-STDAZ, sy-vline,
  WA_PS2052-LGART, sy-vline,
  WA_PS2052-BWGRL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS2052 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_PS2052 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_PS2052 INTO WA_PS2052.


*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 DOCSY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PS2052-DOCSY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS2052-DOCSY.
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_PS2052_STR, 
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
VTKEN TYPE STRING,
AWART TYPE STRING,
ABWTG TYPE STRING,
ABRTG TYPE STRING,
ABRST TYPE STRING,
KALTG TYPE STRING,
STDAZ TYPE STRING,
LGART TYPE STRING,
BWGRL TYPE STRING,
AUFKZ TYPE STRING,
VERSL TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
HRSIF TYPE STRING,
ALLDF TYPE STRING,
WAERS TYPE STRING,
DOCSY TYPE STRING,
DOCNR TYPE STRING,
ANRTG TYPE STRING,
LFZED TYPE STRING,
KRGED TYPE STRING,
KBBEG TYPE STRING,
KENN1 TYPE STRING,
KENN2 TYPE STRING,
RMDDA TYPE STRING,
RMDUZ TYPE STRING,
MLDDA TYPE STRING,
UMSKD TYPE STRING,
UMSCH TYPE STRING,
MLDUZ TYPE STRING,
VORGS TYPE STRING,
REFNR TYPE STRING,
UNFAL TYPE STRING,
PSARB TYPE STRING,
URMAN TYPE STRING,
WTART TYPE STRING,
FAPRS TYPE STRING,
AINFT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS2052_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_PS2052_STR-BEGUZ sy-vline 
WA_PS2052_STR-ENDUZ sy-vline 
WA_PS2052_STR-VTKEN sy-vline 
WA_PS2052_STR-AWART sy-vline 
WA_PS2052_STR-ABWTG sy-vline 
WA_PS2052_STR-ABRTG sy-vline 
WA_PS2052_STR-ABRST sy-vline 
WA_PS2052_STR-KALTG sy-vline 
WA_PS2052_STR-STDAZ sy-vline 
WA_PS2052_STR-LGART sy-vline 
WA_PS2052_STR-BWGRL sy-vline 
WA_PS2052_STR-AUFKZ sy-vline 
WA_PS2052_STR-VERSL sy-vline 
WA_PS2052_STR-TRFGR sy-vline 
WA_PS2052_STR-TRFST sy-vline 
WA_PS2052_STR-PRAKN sy-vline 
WA_PS2052_STR-PRAKZ sy-vline 
WA_PS2052_STR-OTYPE sy-vline 
WA_PS2052_STR-PLANS sy-vline 
WA_PS2052_STR-HRSIF sy-vline 
WA_PS2052_STR-ALLDF sy-vline 
WA_PS2052_STR-WAERS sy-vline 
WA_PS2052_STR-DOCSY sy-vline 
WA_PS2052_STR-DOCNR sy-vline 
WA_PS2052_STR-ANRTG sy-vline 
WA_PS2052_STR-LFZED sy-vline 
WA_PS2052_STR-KRGED sy-vline 
WA_PS2052_STR-KBBEG sy-vline 
WA_PS2052_STR-KENN1 sy-vline 
WA_PS2052_STR-KENN2 sy-vline 
WA_PS2052_STR-RMDDA sy-vline 
WA_PS2052_STR-RMDUZ sy-vline 
WA_PS2052_STR-MLDDA sy-vline 
WA_PS2052_STR-UMSKD sy-vline 
WA_PS2052_STR-UMSCH sy-vline 
WA_PS2052_STR-MLDUZ sy-vline 
WA_PS2052_STR-VORGS sy-vline 
WA_PS2052_STR-REFNR sy-vline 
WA_PS2052_STR-UNFAL sy-vline 
WA_PS2052_STR-PSARB sy-vline 
WA_PS2052_STR-URMAN sy-vline 
WA_PS2052_STR-WTART sy-vline 
WA_PS2052_STR-FAPRS sy-vline 
WA_PS2052_STR-AINFT sy-vline      INTO ld_text SEPARATED BY SPACE.

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