ABAP Select data from SAP table IDWTFIDOC_SA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDWTFIDOC_SA
*  INTO TABLE @DATA(IT_IDWTFIDOC_SA2).
*--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_IDWTFIDOC_SA INDEX 1 INTO DATA(WA_IDWTFIDOC_SA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDWTFIDOC_SA>-BUKRS = 1.
<IDWTFIDOC_SA>-PARTNO_TYPE = 1.
<IDWTFIDOC_SA>-PARTNERNO = 1.
<IDWTFIDOC_SA>-SERIAL_NO = 1.
<IDWTFIDOC_SA>-WT_TAXCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDWTFIDOC_SA-WT_PYMNTTYPE, sy-vline,
  WA_IDWTFIDOC_SA-WT_NAMEBENEF, sy-vline,
  WA_IDWTFIDOC_SA-WT_RATE, sy-vline,
  WA_IDWTFIDOC_SA-WT_REVERSED, sy-vline,
  WA_IDWTFIDOC_SA-WT_PERIOD, sy-vline,
  WA_IDWTFIDOC_SA-WT_RDAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDWTFIDOC_SA 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_IDWTFIDOC_SA 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_IDWTFIDOC_SA INTO WA_IDWTFIDOC_SA.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDWTFIDOC_SA-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTFIDOC_SA-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AU152, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_IDWTFIDOC_SA-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTFIDOC_SA-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU152, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_IDWTFIDOC_SA-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTFIDOC_SA-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WT_QSSHH
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDWTFIDOC_SA-WT_QSSHH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTFIDOC_SA-WT_QSSHH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WT_QSSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDWTFIDOC_SA-WT_QSSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTFIDOC_SA-WT_QSSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WT_QBSHH
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDWTFIDOC_SA-WT_QBSHH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTFIDOC_SA-WT_QBSHH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WT_QBSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDWTFIDOC_SA-WT_QBSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTFIDOC_SA-WT_QBSHB.
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_IDWTFIDOC_SA_STR, 
BUKRS TYPE STRING,
PARTNO_TYPE TYPE STRING,
PARTNERNO TYPE STRING,
SERIAL_NO TYPE STRING,
WT_TAXCODE TYPE STRING,
WT_PYMNTTYPE TYPE STRING,
WT_NAMEBENEF TYPE STRING,
WT_RATE TYPE STRING,
WT_REVERSED TYPE STRING,
WT_PERIOD TYPE STRING,
WT_RDAY TYPE STRING,
WITHT TYPE STRING,
WT_WITHCD TYPE STRING,
GJAHR TYPE STRING,
BUDAT TYPE STRING,
LIFNR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
KUNNR TYPE STRING,
QSREC TYPE STRING,
HWAER TYPE STRING,
WAERS TYPE STRING,
DMBTR TYPE STRING,
WRBTR TYPE STRING,
WT_QSSHH TYPE STRING,
WT_QSSHB TYPE STRING,
WT_QBSHH TYPE STRING,
WT_QBSHB TYPE STRING,
CTNUMBER TYPE STRING,
WT_PAYDT TYPE STRING,
SHKZG TYPE STRING,
WT_GROUP1 TYPE STRING,
ZFBDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDWTFIDOC_SA_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_IDWTFIDOC_SA_STR-BUKRS sy-vline 
WA_IDWTFIDOC_SA_STR-PARTNO_TYPE sy-vline 
WA_IDWTFIDOC_SA_STR-PARTNERNO sy-vline 
WA_IDWTFIDOC_SA_STR-SERIAL_NO sy-vline 
WA_IDWTFIDOC_SA_STR-WT_TAXCODE sy-vline 
WA_IDWTFIDOC_SA_STR-WT_PYMNTTYPE sy-vline 
WA_IDWTFIDOC_SA_STR-WT_NAMEBENEF sy-vline 
WA_IDWTFIDOC_SA_STR-WT_RATE sy-vline 
WA_IDWTFIDOC_SA_STR-WT_REVERSED sy-vline 
WA_IDWTFIDOC_SA_STR-WT_PERIOD sy-vline 
WA_IDWTFIDOC_SA_STR-WT_RDAY sy-vline 
WA_IDWTFIDOC_SA_STR-WITHT sy-vline 
WA_IDWTFIDOC_SA_STR-WT_WITHCD sy-vline 
WA_IDWTFIDOC_SA_STR-GJAHR sy-vline 
WA_IDWTFIDOC_SA_STR-BUDAT sy-vline 
WA_IDWTFIDOC_SA_STR-LIFNR sy-vline 
WA_IDWTFIDOC_SA_STR-BELNR sy-vline 
WA_IDWTFIDOC_SA_STR-BUZEI sy-vline 
WA_IDWTFIDOC_SA_STR-KUNNR sy-vline 
WA_IDWTFIDOC_SA_STR-QSREC sy-vline 
WA_IDWTFIDOC_SA_STR-HWAER sy-vline 
WA_IDWTFIDOC_SA_STR-WAERS sy-vline 
WA_IDWTFIDOC_SA_STR-DMBTR sy-vline 
WA_IDWTFIDOC_SA_STR-WRBTR sy-vline 
WA_IDWTFIDOC_SA_STR-WT_QSSHH sy-vline 
WA_IDWTFIDOC_SA_STR-WT_QSSHB sy-vline 
WA_IDWTFIDOC_SA_STR-WT_QBSHH sy-vline 
WA_IDWTFIDOC_SA_STR-WT_QBSHB sy-vline 
WA_IDWTFIDOC_SA_STR-CTNUMBER sy-vline 
WA_IDWTFIDOC_SA_STR-WT_PAYDT sy-vline 
WA_IDWTFIDOC_SA_STR-SHKZG sy-vline 
WA_IDWTFIDOC_SA_STR-WT_GROUP1 sy-vline 
WA_IDWTFIDOC_SA_STR-ZFBDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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