ABAP Select data from SAP table CATSXT_MYLIST_CUST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CATSXT_MYLIST_CUST 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_MYLIST_CUST. 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_MYLIST_CUST 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_MYLIST_CUST TYPE STANDARD TABLE OF CATSXT_MYLIST_CUST,
      WA_CATSXT_MYLIST_CUST TYPE CATSXT_MYLIST_CUST,
      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_MYLIST_CUST> TYPE CATSXT_MYLIST_CUST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATSXT_MYLIST_CUST
*  INTO TABLE @DATA(IT_CATSXT_MYLIST_CUST2).
*--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_MYLIST_CUST INDEX 1 INTO DATA(WA_CATSXT_MYLIST_CUST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATSXT_MYLIST_CUST>-TASKTYPE = 1.
<CATSXT_MYLIST_CUST>-TASKLEVEL = 1.
<CATSXT_MYLIST_CUST>-TASKTYPE_TEXT = 1.
<CATSXT_MYLIST_CUST>-TASKLEVEL_TEXT = 1.
<CATSXT_MYLIST_CUST>-RACCOBJ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATSXT_MYLIST_CUST-RACCOBJ_GENREC, sy-vline,
  WA_CATSXT_MYLIST_CUST-RACCOBJ_TEXT, sy-vline,
  WA_CATSXT_MYLIST_CUST-DISPTEXTW1, sy-vline,
  WA_CATSXT_MYLIST_CUST-DISPTEXTW2, sy-vline,
  WA_CATSXT_MYLIST_CUST-RKOSTL, sy-vline,
  WA_CATSXT_MYLIST_CUST-RPROJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATSXT_MYLIST_CUST 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_MYLIST_CUST 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_MYLIST_CUST INTO WA_CATSXT_MYLIST_CUST.


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

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

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

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

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

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

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

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

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CATSXT_MYLIST_CUST-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSXT_MYLIST_CUST-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_MYLIST_CUST_STR, 
TASKTYPE TYPE STRING,
TASKLEVEL TYPE STRING,
TASKTYPE_TEXT TYPE STRING,
TASKLEVEL_TEXT TYPE STRING,
RACCOBJ TYPE STRING,
RACCOBJ_GENREC TYPE STRING,
RACCOBJ_TEXT TYPE STRING,
DISPTEXTW1 TYPE STRING,
DISPTEXTW2 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,
SEBELN TYPE STRING,
SEBELP TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
POSID TYPE STRING,
RACCOBJ2 TYPE STRING,
RACCOBJ_GENREC2 TYPE STRING,
RACCOBJ_TEXT2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATSXT_MYLIST_CUST_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_MYLIST_CUST_STR-TASKTYPE sy-vline 
WA_CATSXT_MYLIST_CUST_STR-TASKLEVEL sy-vline 
WA_CATSXT_MYLIST_CUST_STR-TASKTYPE_TEXT sy-vline 
WA_CATSXT_MYLIST_CUST_STR-TASKLEVEL_TEXT sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RACCOBJ sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RACCOBJ_GENREC sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RACCOBJ_TEXT sy-vline 
WA_CATSXT_MYLIST_CUST_STR-DISPTEXTW1 sy-vline 
WA_CATSXT_MYLIST_CUST_STR-DISPTEXTW2 sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RKOSTL sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RPROJ sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RAUFNR sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RNPLNR sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RAUFPL sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RAPLZL sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RKDAUF sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RKDPOS sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RKSTR sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RPRZNR sy-vline 
WA_CATSXT_MYLIST_CUST_STR-SEBELN sy-vline 
WA_CATSXT_MYLIST_CUST_STR-SEBELP sy-vline 
WA_CATSXT_MYLIST_CUST_STR-VORNR sy-vline 
WA_CATSXT_MYLIST_CUST_STR-UVORN sy-vline 
WA_CATSXT_MYLIST_CUST_STR-POSID sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RACCOBJ2 sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RACCOBJ_GENREC2 sy-vline 
WA_CATSXT_MYLIST_CUST_STR-RACCOBJ_TEXT2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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