ABAP Select data from SAP table TCHT_HD_FGET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCHT_HD_FGET
*  INTO TABLE @DATA(IT_TCHT_HD_FGET2).
*--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_TCHT_HD_FGET INDEX 1 INTO DATA(WA_TCHT_HD_FGET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCHT_HD_FGET>-MANDT = 1.
<TCHT_HD_FGET>-HEAD_OS_GUID = 1.
<TCHT_HD_FGET>-FGET_ID = 1.
<TCHT_HD_FGET>-C_GID = 1.
<TCHT_HD_FGET>-BRANCHING = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCHT_HD_FGET-GFORM, sy-vline,
  WA_TCHT_HD_FGET-GDETAIL, sy-vline,
  WA_TCHT_HD_FGET-KATEKZ, sy-vline,
  WA_TCHT_HD_FGET-AGGRKZ, sy-vline,
  WA_TCHT_HD_FGET-DBLFZ, sy-vline,
  WA_TCHT_HD_FGET-DELFZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCHT_HD_FGET 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_TCHT_HD_FGET 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_TCHT_HD_FGET INTO WA_TCHT_HD_FGET.


*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.

*Conversion exit ALPHA, internal->external for field RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TCHT_HD_FGET-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCHT_HD_FGET-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CTY_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TCHT_HD_FGET-CTY_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCHT_HD_FGET-CTY_UOM.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_TCHT_HD_FGET_STR, 
MANDT TYPE STRING,
HEAD_OS_GUID TYPE STRING,
FGET_ID TYPE STRING,
C_GID TYPE STRING,
BRANCHING TYPE STRING,
GFORM TYPE STRING,
GDETAIL TYPE STRING,
KATEKZ TYPE STRING,
AGGRKZ TYPE STRING,
DBLFZ TYPE STRING,
DELFZ TYPE STRING,
SFGTYP TYPE STRING,
SNOTTYPE TYPE STRING,
SNOMWHR TYPE STRING,
BNOMINAL TYPE STRING,
ASTUECK TYPE STRING,
WGSCHFT1 TYPE STRING,
WGSCHFT2 TYPE STRING,
BNOMI1 TYPE STRING,
BNOMI2 TYPE STRING,
BSALDO TYPE STRING,
DEFSZ TYPE STRING,
RANL TYPE STRING,
RHANDPL TYPE STRING,
CTY_ID TYPE STRING,
QUOTSRC TYPE STRING,
CTY_QUANTITY TYPE STRING,
CTY_UOM TYPE STRING,
CSPREAD TYPE STRING,
CSPREAD_FWD TYPE STRING,
DVTRAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCHT_HD_FGET_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_TCHT_HD_FGET_STR-MANDT sy-vline 
WA_TCHT_HD_FGET_STR-HEAD_OS_GUID sy-vline 
WA_TCHT_HD_FGET_STR-FGET_ID sy-vline 
WA_TCHT_HD_FGET_STR-C_GID sy-vline 
WA_TCHT_HD_FGET_STR-BRANCHING sy-vline 
WA_TCHT_HD_FGET_STR-GFORM sy-vline 
WA_TCHT_HD_FGET_STR-GDETAIL sy-vline 
WA_TCHT_HD_FGET_STR-KATEKZ sy-vline 
WA_TCHT_HD_FGET_STR-AGGRKZ sy-vline 
WA_TCHT_HD_FGET_STR-DBLFZ sy-vline 
WA_TCHT_HD_FGET_STR-DELFZ sy-vline 
WA_TCHT_HD_FGET_STR-SFGTYP sy-vline 
WA_TCHT_HD_FGET_STR-SNOTTYPE sy-vline 
WA_TCHT_HD_FGET_STR-SNOMWHR sy-vline 
WA_TCHT_HD_FGET_STR-BNOMINAL sy-vline 
WA_TCHT_HD_FGET_STR-ASTUECK sy-vline 
WA_TCHT_HD_FGET_STR-WGSCHFT1 sy-vline 
WA_TCHT_HD_FGET_STR-WGSCHFT2 sy-vline 
WA_TCHT_HD_FGET_STR-BNOMI1 sy-vline 
WA_TCHT_HD_FGET_STR-BNOMI2 sy-vline 
WA_TCHT_HD_FGET_STR-BSALDO sy-vline 
WA_TCHT_HD_FGET_STR-DEFSZ sy-vline 
WA_TCHT_HD_FGET_STR-RANL sy-vline 
WA_TCHT_HD_FGET_STR-RHANDPL sy-vline 
WA_TCHT_HD_FGET_STR-CTY_ID sy-vline 
WA_TCHT_HD_FGET_STR-QUOTSRC sy-vline 
WA_TCHT_HD_FGET_STR-CTY_QUANTITY sy-vline 
WA_TCHT_HD_FGET_STR-CTY_UOM sy-vline 
WA_TCHT_HD_FGET_STR-CSPREAD sy-vline 
WA_TCHT_HD_FGET_STR-CSPREAD_FWD sy-vline 
WA_TCHT_HD_FGET_STR-DVTRAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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