ABAP Select data from SAP table PSREF_CO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSREF_CO
*  INTO TABLE @DATA(IT_PSREF_CO2).
*--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_PSREF_CO INDEX 1 INTO DATA(WA_PSREF_CO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSREF_CO>-KOSTL = 1.
<PSREF_CO>-LTLST = 1.
<PSREF_CO>-AUFNR = 1.
<PSREF_CO>-KSTRG = 1.
<PSREF_CO>-PS_POSID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSREF_CO-NPLNR, sy-vline,
  WA_PSREF_CO-VORNR, sy-vline,
  WA_PSREF_CO-KDAUF, sy-vline,
  WA_PSREF_CO-KDPOS, sy-vline,
  WA_PSREF_CO-PRZNR, sy-vline,
  WA_PSREF_CO-FISTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSREF_CO 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_PSREF_CO 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_PSREF_CO INTO WA_PSREF_CO.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PS_POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-PS_POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-PS_POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SKOST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-SKOST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-SKOST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-GRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SGRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSREF_CO-SGRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSREF_CO-SGRANT_NBR.
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_PSREF_CO_STR, 
KOSTL TYPE STRING,
LTLST TYPE STRING,
AUFNR TYPE STRING,
KSTRG TYPE STRING,
PS_POSID TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PRZNR TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
SBUKR TYPE STRING,
SGSBR TYPE STRING,
SKOST TYPE STRING,
LSTAR TYPE STRING,
SGTXT TYPE STRING,
DART TYPE STRING,
UDART TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
SGEBER TYPE STRING,
SFKBER TYPE STRING,
SGRANT_NBR TYPE STRING,
BUDGET_PD TYPE STRING,
SBUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSREF_CO_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_PSREF_CO_STR-KOSTL sy-vline 
WA_PSREF_CO_STR-LTLST sy-vline 
WA_PSREF_CO_STR-AUFNR sy-vline 
WA_PSREF_CO_STR-KSTRG sy-vline 
WA_PSREF_CO_STR-PS_POSID sy-vline 
WA_PSREF_CO_STR-NPLNR sy-vline 
WA_PSREF_CO_STR-VORNR sy-vline 
WA_PSREF_CO_STR-KDAUF sy-vline 
WA_PSREF_CO_STR-KDPOS sy-vline 
WA_PSREF_CO_STR-PRZNR sy-vline 
WA_PSREF_CO_STR-FISTL sy-vline 
WA_PSREF_CO_STR-GEBER sy-vline 
WA_PSREF_CO_STR-SBUKR sy-vline 
WA_PSREF_CO_STR-SGSBR sy-vline 
WA_PSREF_CO_STR-SKOST sy-vline 
WA_PSREF_CO_STR-LSTAR sy-vline 
WA_PSREF_CO_STR-SGTXT sy-vline 
WA_PSREF_CO_STR-DART sy-vline 
WA_PSREF_CO_STR-UDART sy-vline 
WA_PSREF_CO_STR-FKBER sy-vline 
WA_PSREF_CO_STR-GRANT_NBR sy-vline 
WA_PSREF_CO_STR-SGEBER sy-vline 
WA_PSREF_CO_STR-SFKBER sy-vline 
WA_PSREF_CO_STR-SGRANT_NBR sy-vline 
WA_PSREF_CO_STR-BUDGET_PD sy-vline 
WA_PSREF_CO_STR-SBUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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