ABAP Select data from SAP table PS0191 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS0191 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 PS0191. 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 PS0191 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_PS0191 TYPE STANDARD TABLE OF PS0191,
      WA_PS0191 TYPE PS0191,
      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: <PS0191> TYPE PS0191.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS0191.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS0191
  INTO TABLE IT_PS0191.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS0191
*  INTO TABLE @DATA(IT_PS01912).
*--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_PS0191 INDEX 1 INTO DATA(WA_PS01912).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS0191 ASSIGNING <PS0191>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS0191>-RUECK = 1.
<PS0191>-FKEJN = 1.
<PS0191>-AWDST = 1.
<PS0191>-AWDBT = 1.
<PS0191>-AWDSW = 1.

ENDLOOP.

LOOP AT IT_PS0191 INTO WA_PS0191.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS0191-AWDBW, sy-vline,
  WA_PS0191-WAVKM, sy-vline,
  WA_PS0191-WAETK, sy-vline,
  WA_PS0191-WASTD, sy-vline,
  WA_PS0191-WAAMF, sy-vline,
  WA_PS0191-WATRK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS0191 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_PS0191 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_PS0191 INTO WA_PS0191.


*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_PS0191_STR, 
RUECK TYPE STRING,
FKEJN TYPE STRING,
AWDST TYPE STRING,
AWDBT TYPE STRING,
AWDSW TYPE STRING,
AWDBW TYPE STRING,
WAVKM TYPE STRING,
WAETK TYPE STRING,
WASTD TYPE STRING,
WAAMF TYPE STRING,
WATRK TYPE STRING,
STABR TYPE STRING,
FRIST TYPE STRING,
STDHF TYPE STRING,
UEEDK TYPE STRING,
UEART TYPE STRING,
WOHNR TYPE STRING,
UEKOS TYPE STRING,
UAVKM TYPE STRING,
UAETK TYPE STRING,
UASTD TYPE STRING,
UAAMF TYPE STRING,
UATRK TYPE STRING,
SONR1 TYPE STRING,
SONR2 TYPE STRING,
LFDNR TYPE STRING,
REIZI TYPE STRING,
UAFKE TYPE STRING,
UEAFR TYPE STRING,
UEAMI TYPE STRING,
UEAAB TYPE STRING,
UEABF TYPE STRING,
UEABM TYPE STRING,
UEABA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS0191_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_PS0191_STR-RUECK sy-vline 
WA_PS0191_STR-FKEJN sy-vline 
WA_PS0191_STR-AWDST sy-vline 
WA_PS0191_STR-AWDBT sy-vline 
WA_PS0191_STR-AWDSW sy-vline 
WA_PS0191_STR-AWDBW sy-vline 
WA_PS0191_STR-WAVKM sy-vline 
WA_PS0191_STR-WAETK sy-vline 
WA_PS0191_STR-WASTD sy-vline 
WA_PS0191_STR-WAAMF sy-vline 
WA_PS0191_STR-WATRK sy-vline 
WA_PS0191_STR-STABR sy-vline 
WA_PS0191_STR-FRIST sy-vline 
WA_PS0191_STR-STDHF sy-vline 
WA_PS0191_STR-UEEDK sy-vline 
WA_PS0191_STR-UEART sy-vline 
WA_PS0191_STR-WOHNR sy-vline 
WA_PS0191_STR-UEKOS sy-vline 
WA_PS0191_STR-UAVKM sy-vline 
WA_PS0191_STR-UAETK sy-vline 
WA_PS0191_STR-UASTD sy-vline 
WA_PS0191_STR-UAAMF sy-vline 
WA_PS0191_STR-UATRK sy-vline 
WA_PS0191_STR-SONR1 sy-vline 
WA_PS0191_STR-SONR2 sy-vline 
WA_PS0191_STR-LFDNR sy-vline 
WA_PS0191_STR-REIZI sy-vline 
WA_PS0191_STR-UAFKE sy-vline 
WA_PS0191_STR-UEAFR sy-vline 
WA_PS0191_STR-UEAMI sy-vline 
WA_PS0191_STR-UEAAB sy-vline 
WA_PS0191_STR-UEABF sy-vline 
WA_PS0191_STR-UEABM sy-vline 
WA_PS0191_STR-UEABA sy-vline      INTO ld_text SEPARATED BY SPACE.

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