ABAP Select data from SAP table TERSEXCHANGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TERSEXCHANGE
*  INTO TABLE @DATA(IT_TERSEXCHANGE2).
*--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_TERSEXCHANGE INDEX 1 INTO DATA(WA_TERSEXCHANGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TERSEXCHANGE>-KURSFW = 1.
<TERSEXCHANGE>-KURSHW = 1.
<TERSEXCHANGE>-SCWHR1 = 1.
<TERSEXCHANGE>-SBWHR = 1.
<TERSEXCHANGE>-SCWHR2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TERSEXCHANGE-SHWHR, sy-vline,
  WA_TERSEXCHANGE-PUSH1, sy-vline,
  WA_TERSEXCHANGE-SBWHR2, sy-vline,
  WA_TERSEXCHANGE-SHWHR2, sy-vline,
  WA_TERSEXCHANGE-DEVKURS, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_TERSEXCHANGE 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_TERSEXCHANGE 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_TERSEXCHANGE INTO WA_TERSEXCHANGE.


*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 EXCRT, internal->external for field KURSFW
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TERSEXCHANGE-KURSFW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TERSEXCHANGE-KURSFW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSHW
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TERSEXCHANGE-KURSHW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TERSEXCHANGE-KURSHW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field DEVKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TERSEXCHANGE-DEVKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TERSEXCHANGE-DEVKURS.
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_TERSEXCHANGE_STR, 
KURSFW TYPE STRING,
KURSHW TYPE STRING,
SCWHR1 TYPE STRING,
SBWHR TYPE STRING,
SCWHR2 TYPE STRING,
SHWHR TYPE STRING,
PUSH1 TYPE STRING,
SBWHR2 TYPE STRING,
SHWHR2 TYPE STRING,
DEVKURS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TERSEXCHANGE_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_TERSEXCHANGE_STR-KURSFW sy-vline 
WA_TERSEXCHANGE_STR-KURSHW sy-vline 
WA_TERSEXCHANGE_STR-SCWHR1 sy-vline 
WA_TERSEXCHANGE_STR-SBWHR sy-vline 
WA_TERSEXCHANGE_STR-SCWHR2 sy-vline 
WA_TERSEXCHANGE_STR-SHWHR sy-vline 
WA_TERSEXCHANGE_STR-PUSH1 sy-vline 
WA_TERSEXCHANGE_STR-SBWHR2 sy-vline 
WA_TERSEXCHANGE_STR-SHWHR2 sy-vline 
WA_TERSEXCHANGE_STR-DEVKURS sy-vline      INTO ld_text SEPARATED BY SPACE.

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