ABAP Select data from SAP table USZBVPROTC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM USZBVPROTC
*  INTO TABLE @DATA(IT_USZBVPROTC2).
*--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_USZBVPROTC INDEX 1 INTO DATA(WA_USZBVPROTC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<USZBVPROTC>-MANDT = 1.
<USZBVPROTC>-COMPANY = 1.
<USZBVPROTC>-USRSECTION = 1.
<USZBVPROTC>-SUBSYSTEM = 1.
<USZBVPROTC>-CLIENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_USZBVPROTC-MODDA, sy-vline,
  WA_USZBVPROTC-MODTI, sy-vline,
  WA_USZBVPROTC-LINE, sy-vline,
  WA_USZBVPROTC-TYPE, sy-vline,
  WA_USZBVPROTC-MSGID, sy-vline,
  WA_USZBVPROTC-MSGNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_USZBVPROTC 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_USZBVPROTC 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_USZBVPROTC INTO WA_USZBVPROTC.


*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 SUBSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_USZBVPROTC-SUBSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USZBVPROTC-SUBSYSTEM.
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_USZBVPROTC_STR, 
MANDT TYPE STRING,
COMPANY TYPE STRING,
USRSECTION TYPE STRING,
SUBSYSTEM TYPE STRING,
CLIENT TYPE STRING,
MODDA TYPE STRING,
MODTI TYPE STRING,
LINE TYPE STRING,
TYPE TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MESSAGE_V1 TYPE STRING,
MESSAGE_V2 TYPE STRING,
MESSAGE_V3 TYPE STRING,
MESSAGE_V4 TYPE STRING,
MODBE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_USZBVPROTC_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_USZBVPROTC_STR-MANDT sy-vline 
WA_USZBVPROTC_STR-COMPANY sy-vline 
WA_USZBVPROTC_STR-USRSECTION sy-vline 
WA_USZBVPROTC_STR-SUBSYSTEM sy-vline 
WA_USZBVPROTC_STR-CLIENT sy-vline 
WA_USZBVPROTC_STR-MODDA sy-vline 
WA_USZBVPROTC_STR-MODTI sy-vline 
WA_USZBVPROTC_STR-LINE sy-vline 
WA_USZBVPROTC_STR-TYPE sy-vline 
WA_USZBVPROTC_STR-MSGID sy-vline 
WA_USZBVPROTC_STR-MSGNO sy-vline 
WA_USZBVPROTC_STR-MESSAGE_V1 sy-vline 
WA_USZBVPROTC_STR-MESSAGE_V2 sy-vline 
WA_USZBVPROTC_STR-MESSAGE_V3 sy-vline 
WA_USZBVPROTC_STR-MESSAGE_V4 sy-vline 
WA_USZBVPROTC_STR-MODBE sy-vline      INTO ld_text SEPARATED BY SPACE.

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