ABAP Select data from SAP table CFG3_ARCH_I into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CFG3_ARCH_I 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 CFG3_ARCH_I. 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 CFG3_ARCH_I 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_CFG3_ARCH_I TYPE STANDARD TABLE OF CFG3_ARCH_I,
      WA_CFG3_ARCH_I TYPE CFG3_ARCH_I,
      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: <CFG3_ARCH_I> TYPE CFG3_ARCH_I.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CFG3_ARCH_I.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CFG3_ARCH_I
  INTO TABLE IT_CFG3_ARCH_I.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CFG3_ARCH_I
*  INTO TABLE @DATA(IT_CFG3_ARCH_I2).
*--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_CFG3_ARCH_I INDEX 1 INTO DATA(WA_CFG3_ARCH_I2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CFG3_ARCH_I ASSIGNING <CFG3_ARCH_I>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CFG3_ARCH_I>-MANDT = 1.
<CFG3_ARCH_I>-IROOT = 1.
<CFG3_ARCH_I>-IPARENT = 1.
<CFG3_ARCH_I>-ISELF = 1.
<CFG3_ARCH_I>-OBTAB = 1.

ENDLOOP.

LOOP AT IT_CFG3_ARCH_I INTO WA_CFG3_ARCH_I.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CFG3_ARCH_I-OBJEK, sy-vline,
  WA_CFG3_ARCH_I-STATU, sy-vline,
  WA_CFG3_ARCH_I-PRFID, sy-vline,
  WA_CFG3_ARCH_I-KLART, sy-vline,
  WA_CFG3_ARCH_I-STLTY, sy-vline,
  WA_CFG3_ARCH_I-STLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CFG3_ARCH_I 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_CFG3_ARCH_I 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_CFG3_ARCH_I INTO WA_CFG3_ARCH_I.


*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 NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CFG3_ARCH_I-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFG3_ARCH_I-STLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field POSNR_STPO
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CFG3_ARCH_I-POSNR_STPO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFG3_ARCH_I-POSNR_STPO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field IDNRK_STPO
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CFG3_ARCH_I-IDNRK_STPO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFG3_ARCH_I-IDNRK_STPO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CFG3_ARCH_I-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFG3_ARCH_I-AENNR.
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_CFG3_ARCH_I_STR, 
MANDT TYPE STRING,
IROOT TYPE STRING,
IPARENT TYPE STRING,
ISELF TYPE STRING,
OBTAB TYPE STRING,
OBJEK TYPE STRING,
STATU TYPE STRING,
PRFID TYPE STRING,
KLART TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STVKN TYPE STRING,
POSNR_STPO TYPE STRING,
IDNRK_STPO TYPE STRING,
KLART_STPO TYPE STRING,
CLASS_STPO TYPE STRING,
AENNR TYPE STRING,
DATUV TYPE STRING,
LKENZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CFG3_ARCH_I_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_CFG3_ARCH_I_STR-MANDT sy-vline 
WA_CFG3_ARCH_I_STR-IROOT sy-vline 
WA_CFG3_ARCH_I_STR-IPARENT sy-vline 
WA_CFG3_ARCH_I_STR-ISELF sy-vline 
WA_CFG3_ARCH_I_STR-OBTAB sy-vline 
WA_CFG3_ARCH_I_STR-OBJEK sy-vline 
WA_CFG3_ARCH_I_STR-STATU sy-vline 
WA_CFG3_ARCH_I_STR-PRFID sy-vline 
WA_CFG3_ARCH_I_STR-KLART sy-vline 
WA_CFG3_ARCH_I_STR-STLTY sy-vline 
WA_CFG3_ARCH_I_STR-STLNR sy-vline 
WA_CFG3_ARCH_I_STR-STVKN sy-vline 
WA_CFG3_ARCH_I_STR-POSNR_STPO sy-vline 
WA_CFG3_ARCH_I_STR-IDNRK_STPO sy-vline 
WA_CFG3_ARCH_I_STR-KLART_STPO sy-vline 
WA_CFG3_ARCH_I_STR-CLASS_STPO sy-vline 
WA_CFG3_ARCH_I_STR-AENNR sy-vline 
WA_CFG3_ARCH_I_STR-DATUV sy-vline 
WA_CFG3_ARCH_I_STR-LKENZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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