ABAP Select data from SAP table UBC_S_INVP_DB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UBC_S_INVP_DB
*  INTO TABLE @DATA(IT_UBC_S_INVP_DB2).
*--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_UBC_S_INVP_DB INDEX 1 INTO DATA(WA_UBC_S_INVP_DB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UBC_S_INVP_DB>-ORG = 1.
<UBC_S_INVP_DB>-DOCNUM = 1.
<UBC_S_INVP_DB>-POSNR = 1.
<UBC_S_INVP_DB>-POSEX = 1.
<UBC_S_INVP_DB>-SGTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UBC_S_INVP_DB-WRBTR, sy-vline,
  WA_UBC_S_INVP_DB-RPA, sy-vline,
  WA_UBC_S_INVP_DB-MWSTPRZ, sy-vline,
  WA_UBC_S_INVP_DB-MWSTBTR, sy-vline,
  WA_UBC_S_INVP_DB-MWSTTXT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_UBC_S_INVP_DB 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_UBC_S_INVP_DB 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_UBC_S_INVP_DB INTO WA_UBC_S_INVP_DB.


*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 AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_UBC_S_INVP_DB-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UBC_S_INVP_DB-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWSTBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_UBC_S_INVP_DB-MWSTBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UBC_S_INVP_DB-MWSTBTR.
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_UBC_S_INVP_DB_STR, 
ORG TYPE STRING,
DOCNUM TYPE STRING,
POSNR TYPE STRING,
POSEX TYPE STRING,
SGTXT TYPE STRING,
WRBTR TYPE STRING,
RPA TYPE STRING,
MWSTPRZ TYPE STRING,
MWSTBTR TYPE STRING,
MWSTTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UBC_S_INVP_DB_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_UBC_S_INVP_DB_STR-ORG sy-vline 
WA_UBC_S_INVP_DB_STR-DOCNUM sy-vline 
WA_UBC_S_INVP_DB_STR-POSNR sy-vline 
WA_UBC_S_INVP_DB_STR-POSEX sy-vline 
WA_UBC_S_INVP_DB_STR-SGTXT sy-vline 
WA_UBC_S_INVP_DB_STR-WRBTR sy-vline 
WA_UBC_S_INVP_DB_STR-RPA sy-vline 
WA_UBC_S_INVP_DB_STR-MWSTPRZ sy-vline 
WA_UBC_S_INVP_DB_STR-MWSTBTR sy-vline 
WA_UBC_S_INVP_DB_STR-MWSTTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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