ABAP Select data from SAP table PRSEL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PRSEL 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 PRSEL. 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 PRSEL 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_PRSEL TYPE STANDARD TABLE OF PRSEL,
      WA_PRSEL TYPE PRSEL,
      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: <PRSEL> TYPE PRSEL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRSEL
*  INTO TABLE @DATA(IT_PRSEL2).
*--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_PRSEL INDEX 1 INTO DATA(WA_PRSEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRSEL>-MANDT = 1.
<PRSEL>-DMODEO = 1.
<PRSEL>-DMODEN = 1.
<PRSEL>-DISGR = 1.
<PRSEL>-FEVOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRSEL-WERKS, sy-vline,
  WA_PRSEL-MATNR, sy-vline,
  WA_PRSEL-ANRVN, sy-vline,
  WA_PRSEL-ANRBS, sy-vline,
  WA_PRSEL-AUART, sy-vline,
  WA_PRSEL-STAT1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRSEL 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_PRSEL 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_PRSEL INTO WA_PRSEL.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PRSEL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRSEL-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSP, internal->external for field PROJN
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PRSEL-PROJN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRSEL-PROJN.
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_PRSEL_STR, 
MANDT TYPE STRING,
DMODEO TYPE STRING,
DMODEN TYPE STRING,
DISGR TYPE STRING,
FEVOR TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
ANRVN TYPE STRING,
ANRBS TYPE STRING,
AUART TYPE STRING,
STAT1 TYPE STRING,
STAT2 TYPE STRING,
STAT3 TYPE STRING,
STAT4 TYPE STRING,
GSTRS TYPE STRING,
GSTRS_ TYPE STRING,
FTRMS TYPE STRING,
FTRMS_ TYPE STRING,
GLTRS TYPE STRING,
GLTRS_ TYPE STRING,
DRMOD_O TYPE STRING,
DRMOD_B TYPE STRING,
DRMOD_V TYPE STRING,
DLSTST TYPE STRING,
DSELST TYPE STRING,
FTRMS_V TYPE STRING,
FTRMS_B TYPE STRING,
SELID TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PROJN TYPE STRING,
FLG_AUFFX_S TYPE STRING,
FLG_KAPFX_S TYPE STRING,
FLG_NOCOM_S TYPE STRING,
FLG_PARCOM_S TYPE STRING,
FLG_FULCOM_S TYPE STRING,
FLG_NOCHK_S TYPE STRING,
PWERK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRSEL_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_PRSEL_STR-MANDT sy-vline 
WA_PRSEL_STR-DMODEO sy-vline 
WA_PRSEL_STR-DMODEN sy-vline 
WA_PRSEL_STR-DISGR sy-vline 
WA_PRSEL_STR-FEVOR sy-vline 
WA_PRSEL_STR-WERKS sy-vline 
WA_PRSEL_STR-MATNR sy-vline 
WA_PRSEL_STR-ANRVN sy-vline 
WA_PRSEL_STR-ANRBS sy-vline 
WA_PRSEL_STR-AUART sy-vline 
WA_PRSEL_STR-STAT1 sy-vline 
WA_PRSEL_STR-STAT2 sy-vline 
WA_PRSEL_STR-STAT3 sy-vline 
WA_PRSEL_STR-STAT4 sy-vline 
WA_PRSEL_STR-GSTRS sy-vline 
WA_PRSEL_STR-GSTRS_ sy-vline 
WA_PRSEL_STR-FTRMS sy-vline 
WA_PRSEL_STR-FTRMS_ sy-vline 
WA_PRSEL_STR-GLTRS sy-vline 
WA_PRSEL_STR-GLTRS_ sy-vline 
WA_PRSEL_STR-DRMOD_O sy-vline 
WA_PRSEL_STR-DRMOD_B sy-vline 
WA_PRSEL_STR-DRMOD_V sy-vline 
WA_PRSEL_STR-DLSTST sy-vline 
WA_PRSEL_STR-DSELST sy-vline 
WA_PRSEL_STR-FTRMS_V sy-vline 
WA_PRSEL_STR-FTRMS_B sy-vline 
WA_PRSEL_STR-SELID sy-vline 
WA_PRSEL_STR-KDAUF sy-vline 
WA_PRSEL_STR-KDPOS sy-vline 
WA_PRSEL_STR-PROJN sy-vline 
WA_PRSEL_STR-FLG_AUFFX_S sy-vline 
WA_PRSEL_STR-FLG_KAPFX_S sy-vline 
WA_PRSEL_STR-FLG_NOCOM_S sy-vline 
WA_PRSEL_STR-FLG_PARCOM_S sy-vline 
WA_PRSEL_STR-FLG_FULCOM_S sy-vline 
WA_PRSEL_STR-FLG_NOCHK_S sy-vline 
WA_PRSEL_STR-PWERK sy-vline      INTO ld_text SEPARATED BY SPACE.

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