ABAP Select data from SAP table TGSUS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TGSUS
*  INTO TABLE @DATA(IT_TGSUS2).
*--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_TGSUS INDEX 1 INTO DATA(WA_TGSUS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TGSUS>-UNAME = 1.
<TGSUS>-WINSIZEX = 1.
<TGSUS>-WINSIZEY = 1.
<TGSUS>-WINPOSX = 1.
<TGSUS>-WINPOSY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TGSUS-TBSIZEX, sy-vline,
  WA_TGSUS-TBSIZEY, sy-vline,
  WA_TGSUS-TBPOSX, sy-vline,
  WA_TGSUS-TBPOSY, sy-vline,
  WA_TGSUS-COLSHADOW, sy-vline,
  WA_TGSUS-COLGRID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TGSUS 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_TGSUS 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_TGSUS INTO WA_TGSUS.


*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_TGSUS_STR, 
UNAME TYPE STRING,
WINSIZEX TYPE STRING,
WINSIZEY TYPE STRING,
WINPOSX TYPE STRING,
WINPOSY TYPE STRING,
TBSIZEX TYPE STRING,
TBSIZEY TYPE STRING,
TBPOSX TYPE STRING,
TBPOSY TYPE STRING,
COLSHADOW TYPE STRING,
COLGRID TYPE STRING,
COLEMPH TYPE STRING,
COLBACK TYPE STRING,
COLFRAME TYPE STRING,
COLACTTIB TYPE STRING,
COLACTTIT TYPE STRING,
COLINACTIB TYPE STRING,
COLINACTIT TYPE STRING,
DEFSHAPE TYPE STRING,
DEFSTYLE TYPE STRING,
DEFBOXCOL TYPE STRING,
DEFTEXTCOL TYPE STRING,
DEFLINECOL TYPE STRING,
PRINTMODE TYPE STRING,
DESTIN TYPE STRING,
NUMERATION TYPE STRING,
OUTPUT TYPE STRING,
FRAME TYPE STRING,
EXPORT TYPE STRING,
PAGFORMAT TYPE STRING,
ORIENT TYPE STRING,
UNIT TYPE STRING,
PRINTABLEX TYPE STRING,
PRINTABLEY TYPE STRING,
BORDERX TYPE STRING,
BORDERY TYPE STRING,
PSOFONT TYPE STRING,
PSLFONT TYPE STRING,
PSOFONTSZ TYPE STRING,
PSLFONTSZ TYPE STRING,
SAVESETTGS TYPE STRING,
SECASESENS TYPE STRING,
SEREMSELEC TYPE STRING,
SOSORTMODE TYPE STRING,
SOTEXTMODE TYPE STRING,
SOORDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TGSUS_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_TGSUS_STR-UNAME sy-vline 
WA_TGSUS_STR-WINSIZEX sy-vline 
WA_TGSUS_STR-WINSIZEY sy-vline 
WA_TGSUS_STR-WINPOSX sy-vline 
WA_TGSUS_STR-WINPOSY sy-vline 
WA_TGSUS_STR-TBSIZEX sy-vline 
WA_TGSUS_STR-TBSIZEY sy-vline 
WA_TGSUS_STR-TBPOSX sy-vline 
WA_TGSUS_STR-TBPOSY sy-vline 
WA_TGSUS_STR-COLSHADOW sy-vline 
WA_TGSUS_STR-COLGRID sy-vline 
WA_TGSUS_STR-COLEMPH sy-vline 
WA_TGSUS_STR-COLBACK sy-vline 
WA_TGSUS_STR-COLFRAME sy-vline 
WA_TGSUS_STR-COLACTTIB sy-vline 
WA_TGSUS_STR-COLACTTIT sy-vline 
WA_TGSUS_STR-COLINACTIB sy-vline 
WA_TGSUS_STR-COLINACTIT sy-vline 
WA_TGSUS_STR-DEFSHAPE sy-vline 
WA_TGSUS_STR-DEFSTYLE sy-vline 
WA_TGSUS_STR-DEFBOXCOL sy-vline 
WA_TGSUS_STR-DEFTEXTCOL sy-vline 
WA_TGSUS_STR-DEFLINECOL sy-vline 
WA_TGSUS_STR-PRINTMODE sy-vline 
WA_TGSUS_STR-DESTIN sy-vline 
WA_TGSUS_STR-NUMERATION sy-vline 
WA_TGSUS_STR-OUTPUT sy-vline 
WA_TGSUS_STR-FRAME sy-vline 
WA_TGSUS_STR-EXPORT sy-vline 
WA_TGSUS_STR-PAGFORMAT sy-vline 
WA_TGSUS_STR-ORIENT sy-vline 
WA_TGSUS_STR-UNIT sy-vline 
WA_TGSUS_STR-PRINTABLEX sy-vline 
WA_TGSUS_STR-PRINTABLEY sy-vline 
WA_TGSUS_STR-BORDERX sy-vline 
WA_TGSUS_STR-BORDERY sy-vline 
WA_TGSUS_STR-PSOFONT sy-vline 
WA_TGSUS_STR-PSLFONT sy-vline 
WA_TGSUS_STR-PSOFONTSZ sy-vline 
WA_TGSUS_STR-PSLFONTSZ sy-vline 
WA_TGSUS_STR-SAVESETTGS sy-vline 
WA_TGSUS_STR-SECASESENS sy-vline 
WA_TGSUS_STR-SEREMSELEC sy-vline 
WA_TGSUS_STR-SOSORTMODE sy-vline 
WA_TGSUS_STR-SOTEXTMODE sy-vline 
WA_TGSUS_STR-SOORDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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