ABAP Select data from SAP table DTAUSCTX_FG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTAUSCTX_FG
*  INTO TABLE @DATA(IT_DTAUSCTX_FG2).
*--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_DTAUSCTX_FG INDEX 1 INTO DATA(WA_DTAUSCTX_FG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTAUSCTX_FG>-TX1 = 1.
<DTAUSCTX_FG>-TX2 = 1.
<DTAUSCTX_FG>-TX3 = 1.
<DTAUSCTX_FG>-TX4 = 1.
<DTAUSCTX_FG>-TX5 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTAUSCTX_FG-TX6, sy-vline,
  WA_DTAUSCTX_FG-TX7, sy-vline,
  WA_DTAUSCTX_FG-TX8, sy-vline,
  WA_DTAUSCTX_FG-TX9, sy-vline,
  WA_DTAUSCTX_FG-TX10, sy-vline,
  WA_DTAUSCTX_FG-TX11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTAUSCTX_FG 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_DTAUSCTX_FG 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_DTAUSCTX_FG INTO WA_DTAUSCTX_FG.


*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_DTAUSCTX_FG_STR, 
TX1 TYPE STRING,
TX2 TYPE STRING,
TX3 TYPE STRING,
TX4 TYPE STRING,
TX5 TYPE STRING,
TX6 TYPE STRING,
TX7 TYPE STRING,
TX8 TYPE STRING,
TX9 TYPE STRING,
TX10 TYPE STRING,
TX11 TYPE STRING,
TX12 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTAUSCTX_FG_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_DTAUSCTX_FG_STR-TX1 sy-vline 
WA_DTAUSCTX_FG_STR-TX2 sy-vline 
WA_DTAUSCTX_FG_STR-TX3 sy-vline 
WA_DTAUSCTX_FG_STR-TX4 sy-vline 
WA_DTAUSCTX_FG_STR-TX5 sy-vline 
WA_DTAUSCTX_FG_STR-TX6 sy-vline 
WA_DTAUSCTX_FG_STR-TX7 sy-vline 
WA_DTAUSCTX_FG_STR-TX8 sy-vline 
WA_DTAUSCTX_FG_STR-TX9 sy-vline 
WA_DTAUSCTX_FG_STR-TX10 sy-vline 
WA_DTAUSCTX_FG_STR-TX11 sy-vline 
WA_DTAUSCTX_FG_STR-TX12 sy-vline      INTO ld_text SEPARATED BY SPACE.

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