ABAP Select data from SAP table CATSXT_COMP_DETAIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATSXT_COMP_DETAIL
*  INTO TABLE @DATA(IT_CATSXT_COMP_DETAIL2).
*--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_CATSXT_COMP_DETAIL INDEX 1 INTO DATA(WA_CATSXT_COMP_DETAIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATSXT_COMP_DETAIL>-TASKCOMPONENT = 1.
<CATSXT_COMP_DETAIL>-COUNTER = 1.
<CATSXT_COMP_DETAIL>-REFCOUNTER = 1.
<CATSXT_COMP_DETAIL>-BELNR = 1.
<CATSXT_COMP_DETAIL>-WORKITEMID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATSXT_COMP_DETAIL-BEGUZ, sy-vline,
  WA_CATSXT_COMP_DETAIL-ENDUZ, sy-vline,
  WA_CATSXT_COMP_DETAIL-LSTAR, sy-vline,
  WA_CATSXT_COMP_DETAIL-SPRZNR, sy-vline,
  WA_CATSXT_COMP_DETAIL-LSTNR, sy-vline,
  WA_CATSXT_COMP_DETAIL-AWART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATSXT_COMP_DETAIL 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_CATSXT_COMP_DETAIL 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_CATSXT_COMP_DETAIL INTO WA_CATSXT_COMP_DETAIL.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CATSXT_COMP_DETAIL-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSXT_COMP_DETAIL-UNIT.
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_CATSXT_COMP_DETAIL_STR, 
TASKCOMPONENT TYPE STRING,
COUNTER TYPE STRING,
REFCOUNTER TYPE STRING,
BELNR TYPE STRING,
WORKITEMID TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
LSTAR TYPE STRING,
SPRZNR TYPE STRING,
LSTNR TYPE STRING,
AWART TYPE STRING,
LGART TYPE STRING,
VERSL TYPE STRING,
AUFKZ TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
PRICE TYPE STRING,
TCURR TYPE STRING,
HRKOSTL TYPE STRING,
HRLSTAR TYPE STRING,
HRFUND TYPE STRING,
HRFUNC_AREA TYPE STRING,
HRGRANT_NBR TYPE STRING,
UNIT TYPE STRING,
STATKEYFIG TYPE STRING,
CATSAMOUNT TYPE STRING,
WAERS TYPE STRING,
CATSQUANTITY TYPE STRING,
PFLAG TYPE STRING,
LONGTEXT TYPE STRING,
KAPAR TYPE STRING,
SPLIT TYPE STRING,
ARBPL TYPE STRING,
WERKS TYPE STRING,
KAPID TYPE STRING,
BEDID TYPE STRING,
ARBID TYPE STRING,
REASON TYPE STRING,
BEMOT TYPE STRING,
BWGRL TYPE STRING,
VTKEN TYPE STRING,
ALLDF TYPE STRING,
OFMNW TYPE STRING,
PEDD TYPE STRING,
AUERU TYPE STRING,
ERUZU TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
WTART TYPE STRING,
ERSDA TYPE STRING,
ERSTM TYPE STRING,
ERNAM TYPE STRING,
LAEDA TYPE STRING,
LAETM TYPE STRING,
AENAM TYPE STRING,
APNAM TYPE STRING,
APDAT TYPE STRING,
MODIFIED TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
NO_CHANGE TYPE STRING,
TASKCOMPONENT_TEXT TYPE STRING,
REASON_TEXT TYPE STRING,
HRBUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATSXT_COMP_DETAIL_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_CATSXT_COMP_DETAIL_STR-TASKCOMPONENT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-COUNTER sy-vline 
WA_CATSXT_COMP_DETAIL_STR-REFCOUNTER sy-vline 
WA_CATSXT_COMP_DETAIL_STR-BELNR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-WORKITEMID sy-vline 
WA_CATSXT_COMP_DETAIL_STR-BEGUZ sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ENDUZ sy-vline 
WA_CATSXT_COMP_DETAIL_STR-LSTAR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-SPRZNR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-LSTNR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-AWART sy-vline 
WA_CATSXT_COMP_DETAIL_STR-LGART sy-vline 
WA_CATSXT_COMP_DETAIL_STR-VERSL sy-vline 
WA_CATSXT_COMP_DETAIL_STR-AUFKZ sy-vline 
WA_CATSXT_COMP_DETAIL_STR-TRFGR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-TRFST sy-vline 
WA_CATSXT_COMP_DETAIL_STR-PRAKN sy-vline 
WA_CATSXT_COMP_DETAIL_STR-PRAKZ sy-vline 
WA_CATSXT_COMP_DETAIL_STR-PRICE sy-vline 
WA_CATSXT_COMP_DETAIL_STR-TCURR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-HRKOSTL sy-vline 
WA_CATSXT_COMP_DETAIL_STR-HRLSTAR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-HRFUND sy-vline 
WA_CATSXT_COMP_DETAIL_STR-HRFUNC_AREA sy-vline 
WA_CATSXT_COMP_DETAIL_STR-HRGRANT_NBR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-UNIT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-STATKEYFIG sy-vline 
WA_CATSXT_COMP_DETAIL_STR-CATSAMOUNT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-WAERS sy-vline 
WA_CATSXT_COMP_DETAIL_STR-CATSQUANTITY sy-vline 
WA_CATSXT_COMP_DETAIL_STR-PFLAG sy-vline 
WA_CATSXT_COMP_DETAIL_STR-LONGTEXT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-KAPAR sy-vline 
WA_CATSXT_COMP_DETAIL_STR-SPLIT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ARBPL sy-vline 
WA_CATSXT_COMP_DETAIL_STR-WERKS sy-vline 
WA_CATSXT_COMP_DETAIL_STR-KAPID sy-vline 
WA_CATSXT_COMP_DETAIL_STR-BEDID sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ARBID sy-vline 
WA_CATSXT_COMP_DETAIL_STR-REASON sy-vline 
WA_CATSXT_COMP_DETAIL_STR-BEMOT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-BWGRL sy-vline 
WA_CATSXT_COMP_DETAIL_STR-VTKEN sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ALLDF sy-vline 
WA_CATSXT_COMP_DETAIL_STR-OFMNW sy-vline 
WA_CATSXT_COMP_DETAIL_STR-PEDD sy-vline 
WA_CATSXT_COMP_DETAIL_STR-AUERU sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ERUZU sy-vline 
WA_CATSXT_COMP_DETAIL_STR-OTYPE sy-vline 
WA_CATSXT_COMP_DETAIL_STR-PLANS sy-vline 
WA_CATSXT_COMP_DETAIL_STR-WTART sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ERSDA sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ERSTM sy-vline 
WA_CATSXT_COMP_DETAIL_STR-ERNAM sy-vline 
WA_CATSXT_COMP_DETAIL_STR-LAEDA sy-vline 
WA_CATSXT_COMP_DETAIL_STR-LAETM sy-vline 
WA_CATSXT_COMP_DETAIL_STR-AENAM sy-vline 
WA_CATSXT_COMP_DETAIL_STR-APNAM sy-vline 
WA_CATSXT_COMP_DETAIL_STR-APDAT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-MODIFIED sy-vline 
WA_CATSXT_COMP_DETAIL_STR-STATUS sy-vline 
WA_CATSXT_COMP_DETAIL_STR-STATUS_TEXT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-NO_CHANGE sy-vline 
WA_CATSXT_COMP_DETAIL_STR-TASKCOMPONENT_TEXT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-REASON_TEXT sy-vline 
WA_CATSXT_COMP_DETAIL_STR-HRBUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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