ABAP Select data from SAP table DTAUSBC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTAUSBC
*  INTO TABLE @DATA(IT_DTAUSBC2).
*--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_DTAUSBC INDEX 1 INTO DATA(WA_DTAUSBC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTAUSBC>-BC1 = 1.
<DTAUSBC>-BC2 = 1.
<DTAUSBC>-BC3 = 1.
<DTAUSBC>-BC4 = 1.
<DTAUSBC>-BC5 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTAUSBC-BC6, sy-vline,
  WA_DTAUSBC-BC7, sy-vline,
  WA_DTAUSBC-BC8, sy-vline,
  WA_DTAUSBC-BC9, sy-vline,
  WA_DTAUSBC-BC10, sy-vline,
  WA_DTAUSBC-BC11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTAUSBC 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_DTAUSBC 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_DTAUSBC INTO WA_DTAUSBC.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DTAUSBC_STR, 
BC1 TYPE STRING,
BC2 TYPE STRING,
BC3 TYPE STRING,
BC4 TYPE STRING,
BC5 TYPE STRING,
BC6 TYPE STRING,
BC7 TYPE STRING,
BC8 TYPE STRING,
BC9 TYPE STRING,
BC10 TYPE STRING,
BC11 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTAUSBC_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_DTAUSBC_STR-BC1 sy-vline 
WA_DTAUSBC_STR-BC2 sy-vline 
WA_DTAUSBC_STR-BC3 sy-vline 
WA_DTAUSBC_STR-BC4 sy-vline 
WA_DTAUSBC_STR-BC5 sy-vline 
WA_DTAUSBC_STR-BC6 sy-vline 
WA_DTAUSBC_STR-BC7 sy-vline 
WA_DTAUSBC_STR-BC8 sy-vline 
WA_DTAUSBC_STR-BC9 sy-vline 
WA_DTAUSBC_STR-BC10 sy-vline 
WA_DTAUSBC_STR-BC11 sy-vline      INTO ld_text SEPARATED BY SPACE.

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