ABAP Select data from SAP table CFSTRUCTUR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CFSTRUCTUR 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 CFSTRUCTUR. 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 CFSTRUCTUR 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_CFSTRUCTUR TYPE STANDARD TABLE OF CFSTRUCTUR,
      WA_CFSTRUCTUR TYPE CFSTRUCTUR,
      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: <CFSTRUCTUR> TYPE CFSTRUCTUR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CFSTRUCTUR
*  INTO TABLE @DATA(IT_CFSTRUCTUR2).
*--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_CFSTRUCTUR INDEX 1 INTO DATA(WA_CFSTRUCTUR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CFSTRUCTUR>-TYPE = 1.
<CFSTRUCTUR>-NR = 1.
<CFSTRUCTUR>-SUBNR = 1.
<CFSTRUCTUR>-ACTIVE = 1.
<CFSTRUCTUR>-POSITION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CFSTRUCTUR-REPID, sy-vline,
  WA_CFSTRUCTUR-SMODE, sy-vline,
  WA_CFSTRUCTUR-LANGU, sy-vline,
  WA_CFSTRUCTUR-TEXT, sy-vline,
  WA_CFSTRUCTUR-FILE, sy-vline,
  WA_CFSTRUCTUR-FORMAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CFSTRUCTUR 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_CFSTRUCTUR 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_CFSTRUCTUR INTO WA_CFSTRUCTUR.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CFSTRUCTUR-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFSTRUCTUR-LANGU.
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_CFSTRUCTUR_STR, 
TYPE TYPE STRING,
NR TYPE STRING,
SUBNR TYPE STRING,
ACTIVE TYPE STRING,
POSITION TYPE STRING,
REPID TYPE STRING,
SMODE TYPE STRING,
LANGU TYPE STRING,
TEXT TYPE STRING,
FILE TYPE STRING,
FORMAT TYPE STRING,
ORIENTATIO TYPE STRING,
NEWPAGE TYPE STRING,
MACRONAME TYPE STRING,
HEADLINE TYPE STRING,
ALIGNMENT TYPE STRING,
FRAME TYPE STRING,
INDEX TYPE STRING,
LFDID TYPE STRING,
HL_NEWPAGE TYPE STRING,
HEADERPAGE TYPE STRING,
HL_ORIENT TYPE STRING,
SHEET_NR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CFSTRUCTUR_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_CFSTRUCTUR_STR-TYPE sy-vline 
WA_CFSTRUCTUR_STR-NR sy-vline 
WA_CFSTRUCTUR_STR-SUBNR sy-vline 
WA_CFSTRUCTUR_STR-ACTIVE sy-vline 
WA_CFSTRUCTUR_STR-POSITION sy-vline 
WA_CFSTRUCTUR_STR-REPID sy-vline 
WA_CFSTRUCTUR_STR-SMODE sy-vline 
WA_CFSTRUCTUR_STR-LANGU sy-vline 
WA_CFSTRUCTUR_STR-TEXT sy-vline 
WA_CFSTRUCTUR_STR-FILE sy-vline 
WA_CFSTRUCTUR_STR-FORMAT sy-vline 
WA_CFSTRUCTUR_STR-ORIENTATIO sy-vline 
WA_CFSTRUCTUR_STR-NEWPAGE sy-vline 
WA_CFSTRUCTUR_STR-MACRONAME sy-vline 
WA_CFSTRUCTUR_STR-HEADLINE sy-vline 
WA_CFSTRUCTUR_STR-ALIGNMENT sy-vline 
WA_CFSTRUCTUR_STR-FRAME sy-vline 
WA_CFSTRUCTUR_STR-INDEX sy-vline 
WA_CFSTRUCTUR_STR-LFDID sy-vline 
WA_CFSTRUCTUR_STR-HL_NEWPAGE sy-vline 
WA_CFSTRUCTUR_STR-HEADERPAGE sy-vline 
WA_CFSTRUCTUR_STR-HL_ORIENT sy-vline 
WA_CFSTRUCTUR_STR-SHEET_NR sy-vline      INTO ld_text SEPARATED BY SPACE.

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