ABAP Select data from SAP table ISU2A_PREI_W into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU2A_PREI_W 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 ISU2A_PREI_W. 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 ISU2A_PREI_W 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_ISU2A_PREI_W TYPE STANDARD TABLE OF ISU2A_PREI_W,
      WA_ISU2A_PREI_W TYPE ISU2A_PREI_W,
      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: <ISU2A_PREI_W> TYPE ISU2A_PREI_W.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU2A_PREI_W.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU2A_PREI_W
  INTO TABLE IT_ISU2A_PREI_W.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU2A_PREI_W
*  INTO TABLE @DATA(IT_ISU2A_PREI_W2).
*--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_ISU2A_PREI_W INDEX 1 INTO DATA(WA_ISU2A_PREI_W2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU2A_PREI_W ASSIGNING <ISU2A_PREI_W>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU2A_PREI_W>-CSNO = 1.
<ISU2A_PREI_W>-NUMBER = 1.
<ISU2A_PREI_W>-AB = 1.
<ISU2A_PREI_W>-VONZONE = 1.
<ISU2A_PREI_W>-PREIS = 1.

ENDLOOP.

LOOP AT IT_ISU2A_PREI_W INTO WA_ISU2A_PREI_W.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU2A_PREI_W-BIS, sy-vline,
  WA_ISU2A_PREI_W-PREISTYP, sy-vline,
  WA_ISU2A_PREI_W-PREISTUF, sy-vline,
  WA_ISU2A_PREI_W-MNGBASIS, sy-vline,
  WA_ISU2A_PREI_W-MASS, sy-vline,
  WA_ISU2A_PREI_W-FRAN_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU2A_PREI_W 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_ISU2A_PREI_W 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_ISU2A_PREI_W INTO WA_ISU2A_PREI_W.


*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 PREIS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_PREI_W-PREIS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_PREI_W-PREIS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_PREI_W-MASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_PREI_W-MASS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONZVER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_PREI_W-KONZVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_PREI_W-KONZVER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OBJNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_PREI_W-OBJNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_PREI_W-OBJNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GGVERTRAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_PREI_W-GGVERTRAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_PREI_W-GGVERTRAG.
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_ISU2A_PREI_W_STR, 
CSNO TYPE STRING,
NUMBER TYPE STRING,
AB TYPE STRING,
VONZONE TYPE STRING,
PREIS TYPE STRING,
BIS TYPE STRING,
PREISTYP TYPE STRING,
PREISTUF TYPE STRING,
MNGBASIS TYPE STRING,
MASS TYPE STRING,
FRAN_TYPE TYPE STRING,
KONZIGR TYPE STRING,
KONZVER TYPE STRING,
KABETRG TYPE STRING,
AKLASSE TYPE STRING,
TIMBASIS TYPE STRING,
TIMTYP TYPE STRING,
PREIGKL TYPE STRING,
MITTELPR TYPE STRING,
DPREIKZ TYPE STRING,
RUNDUNG TYPE STRING,
RUNDART TYPE STRING,
PREISART TYPE STRING,
NEXTINT TYPE STRING,
PRCZONAJ TYPE STRING,
PRCZOMIN TYPE STRING,
PRCZOMAX TYPE STRING,
INIT_KZ TYPE STRING,
REFNR TYPE STRING,
USE_KZ TYPE STRING,
BISZONE TYPE STRING,
ZONENNR TYPE STRING,
VONZONE_OLD TYPE STRING,
BISZONE_OLD TYPE STRING,
TIMBASIS_OLD TYPE STRING,
TIMTYP_OLD TYPE STRING,
PRICE_NEW TYPE STRING,
PRICE_OLD TYPE STRING,
URPREIS TYPE STRING,
PREIADD TYPE STRING,
PREIFAKT TYPE STRING,
OPMULT TYPE STRING,
SAISON TYPE STRING,
PREISZUS TYPE STRING,
FFEE_OLD TYPE STRING,
FFEE_NEW TYPE STRING,
OPERAND_W TYPE STRING,
OPLFDNR_W TYPE STRING,
KONDIGR TYPE STRING,
BILLTYPE TYPE STRING,
OBJNR TYPE STRING,
LAUFNR TYPE STRING,
SERVICE_TYPE TYPE STRING,
GGVERTRAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU2A_PREI_W_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_ISU2A_PREI_W_STR-CSNO sy-vline 
WA_ISU2A_PREI_W_STR-NUMBER sy-vline 
WA_ISU2A_PREI_W_STR-AB sy-vline 
WA_ISU2A_PREI_W_STR-VONZONE sy-vline 
WA_ISU2A_PREI_W_STR-PREIS sy-vline 
WA_ISU2A_PREI_W_STR-BIS sy-vline 
WA_ISU2A_PREI_W_STR-PREISTYP sy-vline 
WA_ISU2A_PREI_W_STR-PREISTUF sy-vline 
WA_ISU2A_PREI_W_STR-MNGBASIS sy-vline 
WA_ISU2A_PREI_W_STR-MASS sy-vline 
WA_ISU2A_PREI_W_STR-FRAN_TYPE sy-vline 
WA_ISU2A_PREI_W_STR-KONZIGR sy-vline 
WA_ISU2A_PREI_W_STR-KONZVER sy-vline 
WA_ISU2A_PREI_W_STR-KABETRG sy-vline 
WA_ISU2A_PREI_W_STR-AKLASSE sy-vline 
WA_ISU2A_PREI_W_STR-TIMBASIS sy-vline 
WA_ISU2A_PREI_W_STR-TIMTYP sy-vline 
WA_ISU2A_PREI_W_STR-PREIGKL sy-vline 
WA_ISU2A_PREI_W_STR-MITTELPR sy-vline 
WA_ISU2A_PREI_W_STR-DPREIKZ sy-vline 
WA_ISU2A_PREI_W_STR-RUNDUNG sy-vline 
WA_ISU2A_PREI_W_STR-RUNDART sy-vline 
WA_ISU2A_PREI_W_STR-PREISART sy-vline 
WA_ISU2A_PREI_W_STR-NEXTINT sy-vline 
WA_ISU2A_PREI_W_STR-PRCZONAJ sy-vline 
WA_ISU2A_PREI_W_STR-PRCZOMIN sy-vline 
WA_ISU2A_PREI_W_STR-PRCZOMAX sy-vline 
WA_ISU2A_PREI_W_STR-INIT_KZ sy-vline 
WA_ISU2A_PREI_W_STR-REFNR sy-vline 
WA_ISU2A_PREI_W_STR-USE_KZ sy-vline 
WA_ISU2A_PREI_W_STR-BISZONE sy-vline 
WA_ISU2A_PREI_W_STR-ZONENNR sy-vline 
WA_ISU2A_PREI_W_STR-VONZONE_OLD sy-vline 
WA_ISU2A_PREI_W_STR-BISZONE_OLD sy-vline 
WA_ISU2A_PREI_W_STR-TIMBASIS_OLD sy-vline 
WA_ISU2A_PREI_W_STR-TIMTYP_OLD sy-vline 
WA_ISU2A_PREI_W_STR-PRICE_NEW sy-vline 
WA_ISU2A_PREI_W_STR-PRICE_OLD sy-vline 
WA_ISU2A_PREI_W_STR-URPREIS sy-vline 
WA_ISU2A_PREI_W_STR-PREIADD sy-vline 
WA_ISU2A_PREI_W_STR-PREIFAKT sy-vline 
WA_ISU2A_PREI_W_STR-OPMULT sy-vline 
WA_ISU2A_PREI_W_STR-SAISON sy-vline 
WA_ISU2A_PREI_W_STR-PREISZUS sy-vline 
WA_ISU2A_PREI_W_STR-FFEE_OLD sy-vline 
WA_ISU2A_PREI_W_STR-FFEE_NEW sy-vline 
WA_ISU2A_PREI_W_STR-OPERAND_W sy-vline 
WA_ISU2A_PREI_W_STR-OPLFDNR_W sy-vline 
WA_ISU2A_PREI_W_STR-KONDIGR sy-vline 
WA_ISU2A_PREI_W_STR-BILLTYPE sy-vline 
WA_ISU2A_PREI_W_STR-OBJNR sy-vline 
WA_ISU2A_PREI_W_STR-LAUFNR sy-vline 
WA_ISU2A_PREI_W_STR-SERVICE_TYPE sy-vline 
WA_ISU2A_PREI_W_STR-GGVERTRAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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