ABAP Select data from SAP table T7XASG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7XASG 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 T7XASG. 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 T7XASG 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_T7XASG TYPE STANDARD TABLE OF T7XASG,
      WA_T7XASG TYPE T7XASG,
      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: <T7XASG> TYPE T7XASG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7XASG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7XASG
  INTO TABLE IT_T7XASG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7XASG
*  INTO TABLE @DATA(IT_T7XASG2).
*--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_T7XASG INDEX 1 INTO DATA(WA_T7XASG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7XASG ASSIGNING <T7XASG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7XASG>-MANDT = 1.
<T7XASG>-PERNR = 1.
<T7XASG>-BAREA = 1.
<T7XASG>-BPLAN = 1.
<T7XASG>-SUBTY = 1.

ENDLOOP.

LOOP AT IT_T7XASG INTO WA_T7XASG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7XASG-CHLNR, sy-vline,
  WA_T7XASG-PLEND, sy-vline,
  WA_T7XASG-PLBEG, sy-vline,
  WA_T7XASG-YTDYS, sy-vline,
  WA_T7XASG-OYDYS, sy-vline,
  WA_T7XASG-CLYTD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7XASG 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_T7XASG 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_T7XASG INTO WA_T7XASG.


*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_T7XASG_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
BAREA TYPE STRING,
BPLAN TYPE STRING,
SUBTY TYPE STRING,
CHLNR TYPE STRING,
PLEND TYPE STRING,
PLBEG TYPE STRING,
YTDYS TYPE STRING,
OYDYS TYPE STRING,
CLYTD TYPE STRING,
CURRC TYPE STRING,
OYBEG TYPE STRING,
OOYTD TYPE STRING,
OCYTD TYPE STRING,
CURRO TYPE STRING,
ONOCL TYPE STRING,
UNAME TYPE STRING,
DATUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7XASG_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_T7XASG_STR-MANDT sy-vline 
WA_T7XASG_STR-PERNR sy-vline 
WA_T7XASG_STR-BAREA sy-vline 
WA_T7XASG_STR-BPLAN sy-vline 
WA_T7XASG_STR-SUBTY sy-vline 
WA_T7XASG_STR-CHLNR sy-vline 
WA_T7XASG_STR-PLEND sy-vline 
WA_T7XASG_STR-PLBEG sy-vline 
WA_T7XASG_STR-YTDYS sy-vline 
WA_T7XASG_STR-OYDYS sy-vline 
WA_T7XASG_STR-CLYTD sy-vline 
WA_T7XASG_STR-CURRC sy-vline 
WA_T7XASG_STR-OYBEG sy-vline 
WA_T7XASG_STR-OOYTD sy-vline 
WA_T7XASG_STR-OCYTD sy-vline 
WA_T7XASG_STR-CURRO sy-vline 
WA_T7XASG_STR-ONOCL sy-vline 
WA_T7XASG_STR-UNAME sy-vline 
WA_T7XASG_STR-DATUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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