ABAP Select data from SAP table FIAA_WUU_WF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIAA_WUU_WF
*  INTO TABLE @DATA(IT_FIAA_WUU_WF2).
*--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_FIAA_WUU_WF INDEX 1 INTO DATA(WA_FIAA_WUU_WF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIAA_WUU_WF>-BUKRS = 1.
<FIAA_WUU_WF>-ANLN1 = 1.
<FIAA_WUU_WF>-ANLN2 = 1.
<FIAA_WUU_WF>-BLART = 1.
<FIAA_WUU_WF>-BZDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIAA_WUU_WF-BUDAT, sy-vline,
  WA_FIAA_WUU_WF-BLDAT, sy-vline,
  WA_FIAA_WUU_WF-AAFAV, sy-vline,
  WA_FIAA_WUU_WF-BWASL, sy-vline,
  WA_FIAA_WUU_WF-XBLNR, sy-vline,
  WA_FIAA_WUU_WF-MONAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIAA_WUU_WF 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_FIAA_WUU_WF 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_FIAA_WUU_WF INTO WA_FIAA_WUU_WF.


*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 ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_WUU_WF-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_WUU_WF-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_WUU_WF-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_WUU_WF-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field AAFAV
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_WUU_WF-AAFAV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_WUU_WF-AAFAV.
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_FIAA_WUU_WF_STR, 
BUKRS TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
BLART TYPE STRING,
BZDAT TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
AAFAV TYPE STRING,
BWASL TYPE STRING,
XBLNR TYPE STRING,
MONAT TYPE STRING,
SGTXT TYPE STRING,
ZUONR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIAA_WUU_WF_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_FIAA_WUU_WF_STR-BUKRS sy-vline 
WA_FIAA_WUU_WF_STR-ANLN1 sy-vline 
WA_FIAA_WUU_WF_STR-ANLN2 sy-vline 
WA_FIAA_WUU_WF_STR-BLART sy-vline 
WA_FIAA_WUU_WF_STR-BZDAT sy-vline 
WA_FIAA_WUU_WF_STR-BUDAT sy-vline 
WA_FIAA_WUU_WF_STR-BLDAT sy-vline 
WA_FIAA_WUU_WF_STR-AAFAV sy-vline 
WA_FIAA_WUU_WF_STR-BWASL sy-vline 
WA_FIAA_WUU_WF_STR-XBLNR sy-vline 
WA_FIAA_WUU_WF_STR-MONAT sy-vline 
WA_FIAA_WUU_WF_STR-SGTXT sy-vline 
WA_FIAA_WUU_WF_STR-ZUONR sy-vline      INTO ld_text SEPARATED BY SPACE.

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