ABAP Select data from SAP table CATSXT_FLOW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CATSXT_FLOW 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_FLOW. 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_FLOW 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_FLOW TYPE STANDARD TABLE OF CATSXT_FLOW,
      WA_CATSXT_FLOW TYPE CATSXT_FLOW,
      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_FLOW> TYPE CATSXT_FLOW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATSXT_FLOW
*  INTO TABLE @DATA(IT_CATSXT_FLOW2).
*--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_FLOW INDEX 1 INTO DATA(WA_CATSXT_FLOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATSXT_FLOW>-COUNTER = 1.
<CATSXT_FLOW>-BELNR = 1.
<CATSXT_FLOW>-PERNR = 1.
<CATSXT_FLOW>-WORKDATE = 1.
<CATSXT_FLOW>-TASKCOUNTER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATSXT_FLOW-TASKTYPE, sy-vline,
  WA_CATSXT_FLOW-TASKLEVEL, sy-vline,
  WA_CATSXT_FLOW-TASKCOMPONENT, sy-vline,
  WA_CATSXT_FLOW-STATUS, sy-vline,
  WA_CATSXT_FLOW-ERSDA, sy-vline,
  WA_CATSXT_FLOW-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATSXT_FLOW 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_FLOW 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_FLOW INTO WA_CATSXT_FLOW.


*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_FLOW-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSXT_FLOW-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CATSXT_FLOW-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSXT_FLOW-MJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CATSXT_FLOW-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSXT_FLOW-LOGSYS.
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_FLOW_STR, 
COUNTER TYPE STRING,
BELNR TYPE STRING,
PERNR TYPE STRING,
WORKDATE TYPE STRING,
TASKCOUNTER TYPE STRING,
TASKTYPE TYPE STRING,
TASKLEVEL TYPE STRING,
TASKCOMPONENT TYPE STRING,
STATUS TYPE STRING,
ERSDA TYPE STRING,
ERNAM TYPE STRING,
LAEDA TYPE STRING,
AENAM TYPE STRING,
APDAT TYPE STRING,
APNAM TYPE STRING,
TRANS_APPLI_CO TYPE STRING,
TRANS_APPLI_HR TYPE STRING,
TRANS_APPLI_MM TYPE STRING,
TRANS_APPLI_PM TYPE STRING,
TRANS_APPLI_PS TYPE STRING,
CO_RUECK TYPE STRING,
CO_RMZHL TYPE STRING,
SEBELN TYPE STRING,
SEBELP TYPE STRING,
LBLNI TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
MBLPO TYPE STRING,
WERKS TYPE STRING,
KOKRS TYPE STRING,
CO_BELNR TYPE STRING,
CO_BUZEI TYPE STRING,
OBJNR TYPE STRING,
UNIT TYPE STRING,
CATSQUANTITY TYPE STRING,
PFLAG_ICON TYPE STRING,
TMP_KEY TYPE STRING,
HR_TRANSFER_ICON TYPE STRING,
AWART TYPE STRING,
LOGSYS TYPE STRING,
CO TYPE STRING,
HR TYPE STRING,
MM TYPE STRING,
PM TYPE STRING,
PS TYPE STRING,
MISSING_TRANSFERS TYPE STRING,
FLOW_DP_TO_SD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATSXT_FLOW_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_FLOW_STR-COUNTER sy-vline 
WA_CATSXT_FLOW_STR-BELNR sy-vline 
WA_CATSXT_FLOW_STR-PERNR sy-vline 
WA_CATSXT_FLOW_STR-WORKDATE sy-vline 
WA_CATSXT_FLOW_STR-TASKCOUNTER sy-vline 
WA_CATSXT_FLOW_STR-TASKTYPE sy-vline 
WA_CATSXT_FLOW_STR-TASKLEVEL sy-vline 
WA_CATSXT_FLOW_STR-TASKCOMPONENT sy-vline 
WA_CATSXT_FLOW_STR-STATUS sy-vline 
WA_CATSXT_FLOW_STR-ERSDA sy-vline 
WA_CATSXT_FLOW_STR-ERNAM sy-vline 
WA_CATSXT_FLOW_STR-LAEDA sy-vline 
WA_CATSXT_FLOW_STR-AENAM sy-vline 
WA_CATSXT_FLOW_STR-APDAT sy-vline 
WA_CATSXT_FLOW_STR-APNAM sy-vline 
WA_CATSXT_FLOW_STR-TRANS_APPLI_CO sy-vline 
WA_CATSXT_FLOW_STR-TRANS_APPLI_HR sy-vline 
WA_CATSXT_FLOW_STR-TRANS_APPLI_MM sy-vline 
WA_CATSXT_FLOW_STR-TRANS_APPLI_PM sy-vline 
WA_CATSXT_FLOW_STR-TRANS_APPLI_PS sy-vline 
WA_CATSXT_FLOW_STR-CO_RUECK sy-vline 
WA_CATSXT_FLOW_STR-CO_RMZHL sy-vline 
WA_CATSXT_FLOW_STR-SEBELN sy-vline 
WA_CATSXT_FLOW_STR-SEBELP sy-vline 
WA_CATSXT_FLOW_STR-LBLNI sy-vline 
WA_CATSXT_FLOW_STR-MBLNR sy-vline 
WA_CATSXT_FLOW_STR-MJAHR sy-vline 
WA_CATSXT_FLOW_STR-MBLPO sy-vline 
WA_CATSXT_FLOW_STR-WERKS sy-vline 
WA_CATSXT_FLOW_STR-KOKRS sy-vline 
WA_CATSXT_FLOW_STR-CO_BELNR sy-vline 
WA_CATSXT_FLOW_STR-CO_BUZEI sy-vline 
WA_CATSXT_FLOW_STR-OBJNR sy-vline 
WA_CATSXT_FLOW_STR-UNIT sy-vline 
WA_CATSXT_FLOW_STR-CATSQUANTITY sy-vline 
WA_CATSXT_FLOW_STR-PFLAG_ICON sy-vline 
WA_CATSXT_FLOW_STR-TMP_KEY sy-vline 
WA_CATSXT_FLOW_STR-HR_TRANSFER_ICON sy-vline 
WA_CATSXT_FLOW_STR-AWART sy-vline 
WA_CATSXT_FLOW_STR-LOGSYS sy-vline 
WA_CATSXT_FLOW_STR-CO sy-vline 
WA_CATSXT_FLOW_STR-HR sy-vline 
WA_CATSXT_FLOW_STR-MM sy-vline 
WA_CATSXT_FLOW_STR-PM sy-vline 
WA_CATSXT_FLOW_STR-PS sy-vline 
WA_CATSXT_FLOW_STR-MISSING_TRANSFERS sy-vline 
WA_CATSXT_FLOW_STR-FLOW_DP_TO_SD sy-vline      INTO ld_text SEPARATED BY SPACE.

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