ABAP Select data from SAP table IDWTS_CO_FIDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDWTS_CO_FIDOC
*  INTO TABLE @DATA(IT_IDWTS_CO_FIDOC2).
*--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_IDWTS_CO_FIDOC INDEX 1 INTO DATA(WA_IDWTS_CO_FIDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDWTS_CO_FIDOC>-BUKRS = 1.
<IDWTS_CO_FIDOC>-PARTNERNO = 1.
<IDWTS_CO_FIDOC>-NO_OF_PAGES = 1.
<IDWTS_CO_FIDOC>-YEAR_1 = 1.
<IDWTS_CO_FIDOC>-MONTH_1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDWTS_CO_FIDOC-DATE_1, sy-vline,
  WA_IDWTS_CO_FIDOC-WT_QSSHH, sy-vline,
  WA_IDWTS_CO_FIDOC-WT_QBSHH, sy-vline,
  WA_IDWTS_CO_FIDOC-HWAER, sy-vline,
  WA_IDWTS_CO_FIDOC-WAERS, sy-vline,
  WA_IDWTS_CO_FIDOC-YEAR_SIGNATURE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDWTS_CO_FIDOC 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_IDWTS_CO_FIDOC 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_IDWTS_CO_FIDOC INTO WA_IDWTS_CO_FIDOC.


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

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

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

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

*Conversion exit AU152, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_IDWTS_CO_FIDOC-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDWTS_CO_FIDOC-DMBTR.
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_IDWTS_CO_FIDOC_STR, 
BUKRS TYPE STRING,
PARTNERNO TYPE STRING,
NO_OF_PAGES TYPE STRING,
YEAR_1 TYPE STRING,
MONTH_1 TYPE STRING,
DATE_1 TYPE STRING,
WT_QSSHH TYPE STRING,
WT_QBSHH TYPE STRING,
HWAER TYPE STRING,
WAERS TYPE STRING,
YEAR_SIGNATURE TYPE STRING,
MONTH_SIGNATURE TYPE STRING,
DAY_SIGNATURE TYPE STRING,
BUDAT TYPE STRING,
XBLNR TYPE STRING,
WT_TYPECODE_TEXT TYPE STRING,
WITHT TYPE STRING,
WT_WITHCD TYPE STRING,
WT_PERIOD TYPE STRING,
XREF2 TYPE STRING,
TEMP2 TYPE STRING,
EATXT TYPE STRING,
WT_AMEXCLVAT TYPE STRING,
QSATZ TYPE STRING,
QEKAR TYPE STRING,
H_PERIOD_TEXT TYPE STRING,
DMBTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDWTS_CO_FIDOC_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_IDWTS_CO_FIDOC_STR-BUKRS sy-vline 
WA_IDWTS_CO_FIDOC_STR-PARTNERNO sy-vline 
WA_IDWTS_CO_FIDOC_STR-NO_OF_PAGES sy-vline 
WA_IDWTS_CO_FIDOC_STR-YEAR_1 sy-vline 
WA_IDWTS_CO_FIDOC_STR-MONTH_1 sy-vline 
WA_IDWTS_CO_FIDOC_STR-DATE_1 sy-vline 
WA_IDWTS_CO_FIDOC_STR-WT_QSSHH sy-vline 
WA_IDWTS_CO_FIDOC_STR-WT_QBSHH sy-vline 
WA_IDWTS_CO_FIDOC_STR-HWAER sy-vline 
WA_IDWTS_CO_FIDOC_STR-WAERS sy-vline 
WA_IDWTS_CO_FIDOC_STR-YEAR_SIGNATURE sy-vline 
WA_IDWTS_CO_FIDOC_STR-MONTH_SIGNATURE sy-vline 
WA_IDWTS_CO_FIDOC_STR-DAY_SIGNATURE sy-vline 
WA_IDWTS_CO_FIDOC_STR-BUDAT sy-vline 
WA_IDWTS_CO_FIDOC_STR-XBLNR sy-vline 
WA_IDWTS_CO_FIDOC_STR-WT_TYPECODE_TEXT sy-vline 
WA_IDWTS_CO_FIDOC_STR-WITHT sy-vline 
WA_IDWTS_CO_FIDOC_STR-WT_WITHCD sy-vline 
WA_IDWTS_CO_FIDOC_STR-WT_PERIOD sy-vline 
WA_IDWTS_CO_FIDOC_STR-XREF2 sy-vline 
WA_IDWTS_CO_FIDOC_STR-TEMP2 sy-vline 
WA_IDWTS_CO_FIDOC_STR-EATXT sy-vline 
WA_IDWTS_CO_FIDOC_STR-WT_AMEXCLVAT sy-vline 
WA_IDWTS_CO_FIDOC_STR-QSATZ sy-vline 
WA_IDWTS_CO_FIDOC_STR-QEKAR sy-vline 
WA_IDWTS_CO_FIDOC_STR-H_PERIOD_TEXT sy-vline 
WA_IDWTS_CO_FIDOC_STR-DMBTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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