ABAP Select data from SAP table FIQA_S_WHT_FORM_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIQA_S_WHT_FORM_HEADER
*  INTO TABLE @DATA(IT_FIQA_S_WHT_FORM_HEADER2).
*--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_FIQA_S_WHT_FORM_HEADER INDEX 1 INTO DATA(WA_FIQA_S_WHT_FORM_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIQA_S_WHT_FORM_HEADER>-COMPANYCODE = 1.
<FIQA_S_WHT_FORM_HEADER>-BUSINESSPARTNERNUMBER = 1.
<FIQA_S_WHT_FORM_HEADER>-CORRESPONDANCEUUID = 1.
<FIQA_S_WHT_FORM_HEADER>-LANGUAGE = 1.
<FIQA_S_WHT_FORM_HEADER>-COMPANYCODENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIQA_S_WHT_FORM_HEADER-TAXIDNUM, sy-vline,
  WA_FIQA_S_WHT_FORM_HEADER-ADDRESS, sy-vline,
  WA_FIQA_S_WHT_FORM_HEADER-ACTIVITY, sy-vline,
  WA_FIQA_S_WHT_FORM_HEADER-TOTWHLDGTAXAMTINCOCODECRCY, sy-vline,
  WA_FIQA_S_WHT_FORM_HEADER-NUMINLETTERS, sy-vline,
  WA_FIQA_S_WHT_FORM_HEADER-FISCALPERIOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIQA_S_WHT_FORM_HEADER 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_FIQA_S_WHT_FORM_HEADER 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_FIQA_S_WHT_FORM_HEADER INTO WA_FIQA_S_WHT_FORM_HEADER.


*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 BUSINESSPARTNERNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIQA_S_WHT_FORM_HEADER-BUSINESSPARTNERNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIQA_S_WHT_FORM_HEADER-BUSINESSPARTNERNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FIQA_S_WHT_FORM_HEADER-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIQA_S_WHT_FORM_HEADER-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FIQA_S_WHT_FORM_HEADER-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIQA_S_WHT_FORM_HEADER-FISCALYEAR.
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_FIQA_S_WHT_FORM_HEADER_STR, 
COMPANYCODE TYPE STRING,
BUSINESSPARTNERNUMBER TYPE STRING,
CORRESPONDANCEUUID TYPE STRING,
LANGUAGE TYPE STRING,
COMPANYCODENAME TYPE STRING,
TAXIDNUM TYPE STRING,
ADDRESS TYPE STRING,
ACTIVITY TYPE STRING,
TOTWHLDGTAXAMTINCOCODECRCY TYPE STRING,
NUMINLETTERS TYPE STRING,
FISCALPERIOD TYPE STRING,
AMT_IN_WORDS TYPE STRING,
WHLDGTAXAMTINCOCODECRCY TYPE STRING,
MONTHNAME TYPE STRING,
FISCALYEAR TYPE STRING,
LAW TYPE STRING,
COMP_NAME TYPE STRING,
COMP_TITLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIQA_S_WHT_FORM_HEADER_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_FIQA_S_WHT_FORM_HEADER_STR-COMPANYCODE sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-BUSINESSPARTNERNUMBER sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-CORRESPONDANCEUUID sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-LANGUAGE sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-COMPANYCODENAME sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-TAXIDNUM sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-ADDRESS sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-ACTIVITY sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-TOTWHLDGTAXAMTINCOCODECRCY sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-NUMINLETTERS sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-FISCALPERIOD sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-AMT_IN_WORDS sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-WHLDGTAXAMTINCOCODECRCY sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-MONTHNAME sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-FISCALYEAR sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-LAW sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-COMP_NAME sy-vline 
WA_FIQA_S_WHT_FORM_HEADER_STR-COMP_TITLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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