ABAP Select data from SAP table CUSERCATALOGS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CUSERCATALOGS
*  INTO TABLE @DATA(IT_CUSERCATALOGS2).
*--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_CUSERCATALOGS INDEX 1 INTO DATA(WA_CUSERCATALOGS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CUSERCATALOGS>-MANDT = 1.
<CUSERCATALOGS>-EMPLOYEE = 1.
<CUSERCATALOGS>-PERSONALIZATIONID = 1.
<CUSERCATALOGS>-BUSINESSOBJECTTYPE = 1.
<CUSERCATALOGS>-PURREQNSSPCATALOG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CUSERCATALOGS-EMPLOYEEFOREDIT, sy-vline,
  WA_CUSERCATALOGS-BUSINESSOBJECTTYPEFOREDIT, sy-vline,
  WA_CUSERCATALOGS-PURREQNSSPCATALOGFOREDIT, sy-vline,
  WA_CUSERCATALOGS-OPNCTLGWEBSERVICENAME, sy-vline,
  WA_CUSERCATALOGS-ISBUSINESSPURPOSECOMPLETED, sy-vline,
  WA_CUSERCATALOGS-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CUSERCATALOGS 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_CUSERCATALOGS 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_CUSERCATALOGS INTO WA_CUSERCATALOGS.


*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 PERSON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CUSERCATALOGS-PERSON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CUSERCATALOGS-PERSON.
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_CUSERCATALOGS_STR, 
MANDT TYPE STRING,
EMPLOYEE TYPE STRING,
PERSONALIZATIONID TYPE STRING,
BUSINESSOBJECTTYPE TYPE STRING,
PURREQNSSPCATALOG TYPE STRING,
EMPLOYEEFOREDIT TYPE STRING,
BUSINESSOBJECTTYPEFOREDIT TYPE STRING,
PURREQNSSPCATALOGFOREDIT TYPE STRING,
OPNCTLGWEBSERVICENAME TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
USERID TYPE STRING,
COMPANYCODE TYPE STRING,
DFLTCTLGINONEPROCMT TYPE STRING,
PERSON TYPE STRING,
FULLNAME TYPE STRING,
PERSONWORKAGRMTAUTHZNGRPG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CUSERCATALOGS_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_CUSERCATALOGS_STR-MANDT sy-vline 
WA_CUSERCATALOGS_STR-EMPLOYEE sy-vline 
WA_CUSERCATALOGS_STR-PERSONALIZATIONID sy-vline 
WA_CUSERCATALOGS_STR-BUSINESSOBJECTTYPE sy-vline 
WA_CUSERCATALOGS_STR-PURREQNSSPCATALOG sy-vline 
WA_CUSERCATALOGS_STR-EMPLOYEEFOREDIT sy-vline 
WA_CUSERCATALOGS_STR-BUSINESSOBJECTTYPEFOREDIT sy-vline 
WA_CUSERCATALOGS_STR-PURREQNSSPCATALOGFOREDIT sy-vline 
WA_CUSERCATALOGS_STR-OPNCTLGWEBSERVICENAME sy-vline 
WA_CUSERCATALOGS_STR-ISBUSINESSPURPOSECOMPLETED sy-vline 
WA_CUSERCATALOGS_STR-AUTHORIZATIONGROUP sy-vline 
WA_CUSERCATALOGS_STR-USERID sy-vline 
WA_CUSERCATALOGS_STR-COMPANYCODE sy-vline 
WA_CUSERCATALOGS_STR-DFLTCTLGINONEPROCMT sy-vline 
WA_CUSERCATALOGS_STR-PERSON sy-vline 
WA_CUSERCATALOGS_STR-FULLNAME sy-vline 
WA_CUSERCATALOGS_STR-PERSONWORKAGRMTAUTHZNGRPG sy-vline      INTO ld_text SEPARATED BY SPACE.

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