ABAP Select data from SAP table CAS02 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 CAS02 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 CAS02. 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 CAS02 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_CAS02 TYPE STANDARD TABLE OF CAS02,
      WA_CAS02 TYPE CAS02,
      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: <CAS02> TYPE CAS02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CAS02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CAS02
  INTO TABLE IT_CAS02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CAS02
*  INTO TABLE @DATA(IT_CAS022).
*--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_CAS02 INDEX 1 INTO DATA(WA_CAS022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CAS02 ASSIGNING <CAS02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CAS02>-SORTKEY = 1.
<CAS02>-SORTPARVW = 1.
<CAS02>-SORTNUMMER = 1.
<CAS02>-BLKNR = 1.
<CAS02>-ALAND = 1.

ENDLOOP.

LOOP AT IT_CAS02 INTO WA_CAS02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CAS02-PARGE, sy-vline,
  WA_CAS02-ADRTYPE, sy-vline,
  WA_CAS02-UPDKZ, sy-vline,
  WA_CAS02-SELKZ, sy-vline,
  WA_CAS02-PARNR, sy-vline,
  WA_CAS02-KUNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CAS02 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_CAS02 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_CAS02 INTO WA_CAS02.


*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 PARVW, internal->external for field SORTPARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_CAS02-SORTPARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAS02-SORTPARVW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SORTNUMMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CAS02-SORTNUMMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAS02-SORTNUMMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CAS02-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAS02-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CAS02-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAS02-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CAS02-KUNN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAS02-KUNN2.
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_CAS02_STR, 
SORTKEY TYPE STRING,
SORTPARVW TYPE STRING,
SORTNUMMER TYPE STRING,
BLKNR TYPE STRING,
ALAND TYPE STRING,
PARGE TYPE STRING,
ADRTYPE TYPE STRING,
UPDKZ TYPE STRING,
SELKZ TYPE STRING,
PARNR TYPE STRING,
KUNNR TYPE STRING,
PERNR TYPE STRING,
LIFNR TYPE STRING,
KUNN2 TYPE STRING,
ANRED_AP TYPE STRING,
NAMEV_AP TYPE STRING,
NAME1_AP TYPE STRING,
SPNAM_AP TYPE STRING,
TITEL_AP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CAS02_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_CAS02_STR-SORTKEY sy-vline 
WA_CAS02_STR-SORTPARVW sy-vline 
WA_CAS02_STR-SORTNUMMER sy-vline 
WA_CAS02_STR-BLKNR sy-vline 
WA_CAS02_STR-ALAND sy-vline 
WA_CAS02_STR-PARGE sy-vline 
WA_CAS02_STR-ADRTYPE sy-vline 
WA_CAS02_STR-UPDKZ sy-vline 
WA_CAS02_STR-SELKZ sy-vline 
WA_CAS02_STR-PARNR sy-vline 
WA_CAS02_STR-KUNNR sy-vline 
WA_CAS02_STR-PERNR sy-vline 
WA_CAS02_STR-LIFNR sy-vline 
WA_CAS02_STR-KUNN2 sy-vline 
WA_CAS02_STR-ANRED_AP sy-vline 
WA_CAS02_STR-NAMEV_AP sy-vline 
WA_CAS02_STR-NAME1_AP sy-vline 
WA_CAS02_STR-SPNAM_AP sy-vline 
WA_CAS02_STR-TITEL_AP sy-vline      INTO ld_text SEPARATED BY SPACE.

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