ABAP Select data from SAP table MMPUR_S_USER_CATALOGS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_USER_CATALOGS
*  INTO TABLE @DATA(IT_MMPUR_S_USER_CATALOGS2).
*--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_MMPUR_S_USER_CATALOGS INDEX 1 INTO DATA(WA_MMPUR_S_USER_CATALOGS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_USER_CATALOGS>-SERVICE_ID = 1.
<MMPUR_S_USER_CATALOGS>-OCI_DETAIL = 1.
<MMPUR_S_USER_CATALOGS>-OCI_VALIDATE = 1.
<MMPUR_S_USER_CATALOGS>-OCI_SOURCING = 1.
<MMPUR_S_USER_CATALOGS>-OCI_BG_SEARCH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_USER_CATALOGS-OPI_DETAIL, sy-vline,
  WA_MMPUR_S_USER_CATALOGS-USE_HTTP_GET, sy-vline,
  WA_MMPUR_S_USER_CATALOGS-ICON_PATH, sy-vline,
  WA_MMPUR_S_USER_CATALOGS-SERVICE_DESCRIPT, sy-vline,
  WA_MMPUR_S_USER_CATALOGS-SPRAS, sy-vline,
  WA_MMPUR_S_USER_CATALOGS-IN_FRAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_USER_CATALOGS 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_MMPUR_S_USER_CATALOGS 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_MMPUR_S_USER_CATALOGS INTO WA_MMPUR_S_USER_CATALOGS.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_USER_CATALOGS-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_USER_CATALOGS-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OBJECT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_USER_CATALOGS-OBJECT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_USER_CATALOGS-OBJECT_ID.
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_MMPUR_S_USER_CATALOGS_STR, 
SERVICE_ID TYPE STRING,
OCI_DETAIL TYPE STRING,
OCI_VALIDATE TYPE STRING,
OCI_SOURCING TYPE STRING,
OCI_BG_SEARCH TYPE STRING,
OPI_DETAIL TYPE STRING,
USE_HTTP_GET TYPE STRING,
ICON_PATH TYPE STRING,
SERVICE_DESCRIPT TYPE STRING,
SPRAS TYPE STRING,
IN_FRAME TYPE STRING,
EX_FRAME TYPE STRING,
IND_DO_NOT_SHOW TYPE STRING,
IND_ALLOW_EXTR TYPE STRING,
SERVICE_URL TYPE STRING,
POLL_URL TYPE STRING,
LAUNCH_FROM TYPE STRING,
OBJECT_ID TYPE STRING,
PRODUCTID TYPE STRING,
FORM_DATA TYPE STRING,
PARENT_KEY TYPE STRING,
EVENT_ID TYPE STRING,
MANDT TYPE STRING,
OPNCTLGWEBSERVICEID TYPE STRING,
OPNCTLGWEBSERVICENAME TYPE STRING,
ISDEFAULTCATALOG TYPE STRING,
OPNCTLGISPRODDSPALLWD TYPE STRING,
OPNCTLGISPRODUPDTALLWD TYPE STRING,
OPNCTLGISSRCGALLWD TYPE STRING,
OPNCTLGHASCRSCTLGSRCH TYPE STRING,
OPNCTLGHASPARTDETS TYPE STRING,
OPNCTLGHASHTTPGET TYPE STRING,
OPNCTLGICONPATH TYPE STRING,
ISOPNCTLGPUNCHOUTDISABLED TYPE STRING,
ISOPNCTLGEXTRACTIONENABLED TYPE STRING,
ISERRORMSGNOTTOBELOGGED TYPE STRING,
ISSUCCESSMSGNOTTOBELOGGED TYPE STRING,
ISWARNINGMSGNOTTOBELOGGED TYPE STRING,
OPNCTLGITMPRICECHECKCAT TYPE STRING,
OPNCTLGWEBSRVCURL TYPE STRING,
OPNCTLGWEBSERVICEPARAMETERS TYPE STRING,
OPNCTLGBUSOBJKEY TYPE STRING,
OPNCATSESSIONID TYPE STRING,
OPNCTLGORIGINAPPLICATION TYPE STRING,
OBJECTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_USER_CATALOGS_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_MMPUR_S_USER_CATALOGS_STR-SERVICE_ID sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OCI_DETAIL sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OCI_VALIDATE sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OCI_SOURCING sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OCI_BG_SEARCH sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPI_DETAIL sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-USE_HTTP_GET sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-ICON_PATH sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-SERVICE_DESCRIPT sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-SPRAS sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-IN_FRAME sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-EX_FRAME sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-IND_DO_NOT_SHOW sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-IND_ALLOW_EXTR sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-SERVICE_URL sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-POLL_URL sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-LAUNCH_FROM sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OBJECT_ID sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-PRODUCTID sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-FORM_DATA sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-PARENT_KEY sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-EVENT_ID sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-MANDT sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGWEBSERVICEID sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGWEBSERVICENAME sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-ISDEFAULTCATALOG sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGISPRODDSPALLWD sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGISPRODUPDTALLWD sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGISSRCGALLWD sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGHASCRSCTLGSRCH sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGHASPARTDETS sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGHASHTTPGET sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGICONPATH sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-ISOPNCTLGPUNCHOUTDISABLED sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-ISOPNCTLGEXTRACTIONENABLED sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-ISERRORMSGNOTTOBELOGGED sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-ISSUCCESSMSGNOTTOBELOGGED sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-ISWARNINGMSGNOTTOBELOGGED sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGITMPRICECHECKCAT sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGWEBSRVCURL sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGWEBSERVICEPARAMETERS sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGBUSOBJKEY sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCATSESSIONID sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OPNCTLGORIGINAPPLICATION sy-vline 
WA_MMPUR_S_USER_CATALOGS_STR-OBJECTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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