ABAP Select data from SAP table TCG11 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TCG11 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 TCG11. 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 TCG11 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_TCG11 TYPE STANDARD TABLE OF TCG11,
      WA_TCG11 TYPE TCG11,
      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: <TCG11> TYPE TCG11.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TCG11.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TCG11
  INTO TABLE IT_TCG11.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCG11
*  INTO TABLE @DATA(IT_TCG112).
*--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_TCG11 INDEX 1 INTO DATA(WA_TCG112).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TCG11 ASSIGNING <TCG11>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCG11>-MANDT = 1.
<TCG11>-ESTCAT = 1.
<TCG11>-ESTTYPE = 1.
<TCG11>-REM = 1.
<TCG11>-CLS = 1.

ENDLOOP.

LOOP AT IT_TCG11 INTO WA_TCG11.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCG11-CLSPOS, sy-vline,
  WA_TCG11-ECCOFLG, sy-vline,
  WA_TCG11-ECINFLG, sy-vline,
  WA_TCG11-ECUPFLG, sy-vline,
  WA_TCG11-USEPROF, sy-vline,
  WA_TCG11-IDLID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCG11 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_TCG11 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_TCG11 INTO WA_TCG11.


*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_TCG11_STR, 
MANDT TYPE STRING,
ESTCAT TYPE STRING,
ESTTYPE TYPE STRING,
REM TYPE STRING,
CLS TYPE STRING,
CLSPOS TYPE STRING,
ECCOFLG TYPE STRING,
ECINFLG TYPE STRING,
ECUPFLG TYPE STRING,
USEPROF TYPE STRING,
IDLID TYPE STRING,
CLVANAM TYPE STRING,
CLVPNAM TYPE STRING,
USEPRDEF TYPE STRING,
ENTRYF TYPE STRING,
FLGSINST TYPE STRING,
FLGINT TYPE STRING,
FLGINV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCG11_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_TCG11_STR-MANDT sy-vline 
WA_TCG11_STR-ESTCAT sy-vline 
WA_TCG11_STR-ESTTYPE sy-vline 
WA_TCG11_STR-REM sy-vline 
WA_TCG11_STR-CLS sy-vline 
WA_TCG11_STR-CLSPOS sy-vline 
WA_TCG11_STR-ECCOFLG sy-vline 
WA_TCG11_STR-ECINFLG sy-vline 
WA_TCG11_STR-ECUPFLG sy-vline 
WA_TCG11_STR-USEPROF sy-vline 
WA_TCG11_STR-IDLID sy-vline 
WA_TCG11_STR-CLVANAM sy-vline 
WA_TCG11_STR-CLVPNAM sy-vline 
WA_TCG11_STR-USEPRDEF sy-vline 
WA_TCG11_STR-ENTRYF sy-vline 
WA_TCG11_STR-FLGSINST sy-vline 
WA_TCG11_STR-FLGINT sy-vline 
WA_TCG11_STR-FLGINV sy-vline      INTO ld_text SEPARATED BY SPACE.

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