ABAP Select data from SAP table CATSXT_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CATSXT_ALV 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_ALV. 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_ALV 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_ALV TYPE STANDARD TABLE OF CATSXT_ALV,
      WA_CATSXT_ALV TYPE CATSXT_ALV,
      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_ALV> TYPE CATSXT_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATSXT_ALV
*  INTO TABLE @DATA(IT_CATSXT_ALV2).
*--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_ALV INDEX 1 INTO DATA(WA_CATSXT_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATSXT_ALV>-MANDT = 1.
<CATSXT_ALV>-PERNR = 1.
<CATSXT_ALV>-WORKDATE = 1.
<CATSXT_ALV>-SKOSTL = 1.
<CATSXT_ALV>-SEBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATSXT_ALV-SEBELP, sy-vline,
  WA_CATSXT_ALV-RKOSTL, sy-vline,
  WA_CATSXT_ALV-RPROJ, sy-vline,
  WA_CATSXT_ALV-RAUFNR, sy-vline,
  WA_CATSXT_ALV-RNPLNR, sy-vline,
  WA_CATSXT_ALV-RAUFPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATSXT_ALV 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_ALV 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_ALV INTO WA_CATSXT_ALV.


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

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

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

*Conversion exit ABPSP, internal->external for field RPROJ
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CATSXT_ALV-RPROJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSXT_ALV-RPROJ.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CATSXT_ALV-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSXT_ALV-POSID.
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_ALV_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
WORKDATE TYPE STRING,
SKOSTL TYPE STRING,
SEBELN TYPE STRING,
SEBELP TYPE STRING,
RKOSTL TYPE STRING,
RPROJ TYPE STRING,
RAUFNR TYPE STRING,
RNPLNR TYPE STRING,
RAUFPL TYPE STRING,
RAPLZL TYPE STRING,
RKDAUF TYPE STRING,
RKDPOS TYPE STRING,
RKSTR TYPE STRING,
RPRZNR TYPE STRING,
PAOBJNR TYPE STRING,
FUND TYPE STRING,
FUNC_AREA TYPE STRING,
GRANT_NBR TYPE STRING,
S_FUND TYPE STRING,
S_FUNC_AREA TYPE STRING,
S_GRANT_NBR TYPE STRING,
BUDGET_PD TYPE STRING,
SBUDGET_PD TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,
OVERTIMECAT TYPE STRING,
WORK_ITEM_ID TYPE STRING,
REINR TYPE STRING,
WABLNR TYPE STRING,
KOKRS TYPE STRING,
AUTYP TYPE STRING,
HRCOSTASG TYPE STRING,
TASKTYPE TYPE STRING,
TASKLEVEL TYPE STRING,
BUKRS TYPE STRING,
CPR_GUID TYPE STRING,
CPR_EXTID TYPE STRING,
CPR_OBJGUID TYPE STRING,
CPR_OBJGEXTID TYPE STRING,
CPR_OBJTYPE TYPE STRING,
HRBUDGET_PD TYPE STRING,
LOGSYS TYPE STRING,
EXTSYSTEM TYPE STRING,
EXTAPPLICATION TYPE STRING,
EXTDOCUMENTNO TYPE STRING,
TASKCOUNTER TYPE STRING,
LTXA1 TYPE STRING,
DUMMY_INCL_EEW_PRS_CPILS TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
POSID TYPE STRING,
ENAME TYPE STRING,
SNAME TYPE STRING,
TASKTYPE_TEXT TYPE STRING,
TASKLEVEL_TEXT TYPE STRING,
RACCOBJ TYPE STRING,
RACCOBJ_TEXT TYPE STRING,
LONGTEXT_ICON TYPE STRING,
PFLAG_ICON TYPE STRING,
PROFILE TYPE STRING,
RACCOBJ_GENREC TYPE STRING,
TMP_KEY TYPE STRING,
MARKER TYPE STRING,
NO_CHANGE TYPE STRING,
SAVE_AS_LOCKED TYPE STRING,
GOS_ICON TYPE STRING,
ADDITIONAL_RECEIVERS TYPE STRING,
CAT2AMOUNT TYPE STRING,
CAT2WAERS TYPE STRING,
CORR_ICON TYPE STRING,
CO_TRANSFER TYPE STRING,
INVOICED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATSXT_ALV_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_ALV_STR-MANDT sy-vline 
WA_CATSXT_ALV_STR-PERNR sy-vline 
WA_CATSXT_ALV_STR-WORKDATE sy-vline 
WA_CATSXT_ALV_STR-SKOSTL sy-vline 
WA_CATSXT_ALV_STR-SEBELN sy-vline 
WA_CATSXT_ALV_STR-SEBELP sy-vline 
WA_CATSXT_ALV_STR-RKOSTL sy-vline 
WA_CATSXT_ALV_STR-RPROJ sy-vline 
WA_CATSXT_ALV_STR-RAUFNR sy-vline 
WA_CATSXT_ALV_STR-RNPLNR sy-vline 
WA_CATSXT_ALV_STR-RAUFPL sy-vline 
WA_CATSXT_ALV_STR-RAPLZL sy-vline 
WA_CATSXT_ALV_STR-RKDAUF sy-vline 
WA_CATSXT_ALV_STR-RKDPOS sy-vline 
WA_CATSXT_ALV_STR-RKSTR sy-vline 
WA_CATSXT_ALV_STR-RPRZNR sy-vline 
WA_CATSXT_ALV_STR-PAOBJNR sy-vline 
WA_CATSXT_ALV_STR-FUND sy-vline 
WA_CATSXT_ALV_STR-FUNC_AREA sy-vline 
WA_CATSXT_ALV_STR-GRANT_NBR sy-vline 
WA_CATSXT_ALV_STR-S_FUND sy-vline 
WA_CATSXT_ALV_STR-S_FUNC_AREA sy-vline 
WA_CATSXT_ALV_STR-S_GRANT_NBR sy-vline 
WA_CATSXT_ALV_STR-BUDGET_PD sy-vline 
WA_CATSXT_ALV_STR-SBUDGET_PD sy-vline 
WA_CATSXT_ALV_STR-SERVICE_DOC_TYPE sy-vline 
WA_CATSXT_ALV_STR-SERVICE_DOC_ID sy-vline 
WA_CATSXT_ALV_STR-SERVICE_DOC_ITEM_ID sy-vline 
WA_CATSXT_ALV_STR-OVERTIMECAT sy-vline 
WA_CATSXT_ALV_STR-WORK_ITEM_ID sy-vline 
WA_CATSXT_ALV_STR-REINR sy-vline 
WA_CATSXT_ALV_STR-WABLNR sy-vline 
WA_CATSXT_ALV_STR-KOKRS sy-vline 
WA_CATSXT_ALV_STR-AUTYP sy-vline 
WA_CATSXT_ALV_STR-HRCOSTASG sy-vline 
WA_CATSXT_ALV_STR-TASKTYPE sy-vline 
WA_CATSXT_ALV_STR-TASKLEVEL sy-vline 
WA_CATSXT_ALV_STR-BUKRS sy-vline 
WA_CATSXT_ALV_STR-CPR_GUID sy-vline 
WA_CATSXT_ALV_STR-CPR_EXTID sy-vline 
WA_CATSXT_ALV_STR-CPR_OBJGUID sy-vline 
WA_CATSXT_ALV_STR-CPR_OBJGEXTID sy-vline 
WA_CATSXT_ALV_STR-CPR_OBJTYPE sy-vline 
WA_CATSXT_ALV_STR-HRBUDGET_PD sy-vline 
WA_CATSXT_ALV_STR-LOGSYS sy-vline 
WA_CATSXT_ALV_STR-EXTSYSTEM sy-vline 
WA_CATSXT_ALV_STR-EXTAPPLICATION sy-vline 
WA_CATSXT_ALV_STR-EXTDOCUMENTNO sy-vline 
WA_CATSXT_ALV_STR-TASKCOUNTER sy-vline 
WA_CATSXT_ALV_STR-LTXA1 sy-vline 
WA_CATSXT_ALV_STR-DUMMY_INCL_EEW_PRS_CPILS sy-vline 
WA_CATSXT_ALV_STR-VORNR sy-vline 
WA_CATSXT_ALV_STR-UVORN sy-vline 
WA_CATSXT_ALV_STR-POSID sy-vline 
WA_CATSXT_ALV_STR-ENAME sy-vline 
WA_CATSXT_ALV_STR-SNAME sy-vline 
WA_CATSXT_ALV_STR-TASKTYPE_TEXT sy-vline 
WA_CATSXT_ALV_STR-TASKLEVEL_TEXT sy-vline 
WA_CATSXT_ALV_STR-RACCOBJ sy-vline 
WA_CATSXT_ALV_STR-RACCOBJ_TEXT sy-vline 
WA_CATSXT_ALV_STR-LONGTEXT_ICON sy-vline 
WA_CATSXT_ALV_STR-PFLAG_ICON sy-vline 
WA_CATSXT_ALV_STR-PROFILE sy-vline 
WA_CATSXT_ALV_STR-RACCOBJ_GENREC sy-vline 
WA_CATSXT_ALV_STR-TMP_KEY sy-vline 
WA_CATSXT_ALV_STR-MARKER sy-vline 
WA_CATSXT_ALV_STR-NO_CHANGE sy-vline 
WA_CATSXT_ALV_STR-SAVE_AS_LOCKED sy-vline 
WA_CATSXT_ALV_STR-GOS_ICON sy-vline 
WA_CATSXT_ALV_STR-ADDITIONAL_RECEIVERS sy-vline 
WA_CATSXT_ALV_STR-CAT2AMOUNT sy-vline 
WA_CATSXT_ALV_STR-CAT2WAERS sy-vline 
WA_CATSXT_ALV_STR-CORR_ICON sy-vline 
WA_CATSXT_ALV_STR-CO_TRANSFER sy-vline 
WA_CATSXT_ALV_STR-INVOICED sy-vline      INTO ld_text SEPARATED BY SPACE.

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