ABAP Select data from SAP table PS0057 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS0057 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 PS0057. 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 PS0057 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_PS0057 TYPE STANDARD TABLE OF PS0057,
      WA_PS0057 TYPE PS0057,
      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: <PS0057> TYPE PS0057.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS0057.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS0057
  INTO TABLE IT_PS0057.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS0057
*  INTO TABLE @DATA(IT_PS00572).
*--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_PS0057 INDEX 1 INTO DATA(WA_PS00572).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS0057 ASSIGNING <PS0057>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS0057>-EMFSL = 1.
<PS0057>-MTGLN = 1.
<PS0057>-GRPRG = 1.
<PS0057>-BETRG = 1.
<PS0057>-WAERS = 1.

ENDLOOP.

LOOP AT IT_PS0057 INTO WA_PS0057.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS0057-LGART, sy-vline,
  WA_PS0057-ANZHL, sy-vline,
  WA_PS0057-ZEINH, sy-vline,
  WA_PS0057-ZFPER, sy-vline,
  WA_PS0057-ZDATE, sy-vline,
  WA_PS0057-ZANZL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS0057 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_PS0057 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_PS0057 INTO WA_PS0057.


*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 ESRRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PS0057-ESRRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS0057-ESRRE.
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_PS0057_STR, 
EMFSL TYPE STRING,
MTGLN TYPE STRING,
GRPRG TYPE STRING,
BETRG TYPE STRING,
WAERS TYPE STRING,
LGART TYPE STRING,
ANZHL TYPE STRING,
ZEINH TYPE STRING,
ZFPER TYPE STRING,
ZDATE TYPE STRING,
ZANZL TYPE STRING,
ZEINZ TYPE STRING,
PRITY TYPE STRING,
UFUNC TYPE STRING,
UNLOC TYPE STRING,
USTAT TYPE STRING,
ESRNR TYPE STRING,
ESRRE TYPE STRING,
ESRPZ TYPE STRING,
ZWECK TYPE STRING,
OPKEN TYPE STRING,
INDBW TYPE STRING,
ZSCHL TYPE STRING,
UWDAT TYPE STRING,
MODEL TYPE STRING,
MGART TYPE STRING,
BKREF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS0057_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_PS0057_STR-EMFSL sy-vline 
WA_PS0057_STR-MTGLN sy-vline 
WA_PS0057_STR-GRPRG sy-vline 
WA_PS0057_STR-BETRG sy-vline 
WA_PS0057_STR-WAERS sy-vline 
WA_PS0057_STR-LGART sy-vline 
WA_PS0057_STR-ANZHL sy-vline 
WA_PS0057_STR-ZEINH sy-vline 
WA_PS0057_STR-ZFPER sy-vline 
WA_PS0057_STR-ZDATE sy-vline 
WA_PS0057_STR-ZANZL sy-vline 
WA_PS0057_STR-ZEINZ sy-vline 
WA_PS0057_STR-PRITY sy-vline 
WA_PS0057_STR-UFUNC sy-vline 
WA_PS0057_STR-UNLOC sy-vline 
WA_PS0057_STR-USTAT sy-vline 
WA_PS0057_STR-ESRNR sy-vline 
WA_PS0057_STR-ESRRE sy-vline 
WA_PS0057_STR-ESRPZ sy-vline 
WA_PS0057_STR-ZWECK sy-vline 
WA_PS0057_STR-OPKEN sy-vline 
WA_PS0057_STR-INDBW sy-vline 
WA_PS0057_STR-ZSCHL sy-vline 
WA_PS0057_STR-UWDAT sy-vline 
WA_PS0057_STR-MODEL sy-vline 
WA_PS0057_STR-MGART sy-vline 
WA_PS0057_STR-BKREF sy-vline      INTO ld_text SEPARATED BY SPACE.

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