ABAP Select data from SAP table P01_KGID_ANTW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01_KGID_ANTW 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 P01_KGID_ANTW. 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 P01_KGID_ANTW 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_P01_KGID_ANTW TYPE STANDARD TABLE OF P01_KGID_ANTW,
      WA_P01_KGID_ANTW TYPE P01_KGID_ANTW,
      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: <P01_KGID_ANTW> TYPE P01_KGID_ANTW.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01_KGID_ANTW.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01_KGID_ANTW
  INTO TABLE IT_P01_KGID_ANTW.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01_KGID_ANTW
*  INTO TABLE @DATA(IT_P01_KGID_ANTW2).
*--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_P01_KGID_ANTW INDEX 1 INTO DATA(WA_P01_KGID_ANTW2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01_KGID_ANTW ASSIGNING <P01_KGID_ANTW>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01_KGID_ANTW>-MANDT = 1.
<P01_KGID_ANTW>-GUID = 1.
<P01_KGID_ANTW>-ANTWNR = 1.
<P01_KGID_ANTW>-STATUS = 1.
<P01_KGID_ANTW>-ANTWART = 1.

ENDLOOP.

LOOP AT IT_P01_KGID_ANTW INTO WA_P01_KGID_ANTW.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01_KGID_ANTW-NACHNR, sy-vline,
  WA_P01_KGID_ANTW-NACHTXT, sy-vline,
  WA_P01_KGID_ANTW-STDAT, sy-vline,
  WA_P01_KGID_ANTW-STSID, sy-vline,
  WA_P01_KGID_ANTW-FKSTILL, sy-vline,
  WA_P01_KGID_ANTW-FKSTBEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01_KGID_ANTW 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_P01_KGID_ANTW 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_P01_KGID_ANTW INTO WA_P01_KGID_ANTW.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P01_KGID_ANTW_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
ANTWNR TYPE STRING,
STATUS TYPE STRING,
ANTWART TYPE STRING,
NACHNR TYPE STRING,
NACHTXT TYPE STRING,
STDAT TYPE STRING,
STSID TYPE STRING,
FKSTILL TYPE STRING,
FKSTBEG TYPE STRING,
FKSPERR TYPE STRING,
FKSPBEG TYPE STRING,
FKSPEND TYPE STRING,
UFAMKAS TYPE STRING,
UFKNAME TYPE STRING,
UFKMAIL TYPE STRING,
UFKTEL TYPE STRING,
UFKFAX TYPE STRING,
UFKSTR TYPE STRING,
UFKHNR TYPE STRING,
UFKHNRZ TYPE STRING,
UFKPLZ TYPE STRING,
UFKORT TYPE STRING,
UFKPFACH TYPE STRING,
UFACHVS TYPE STRING,
UVONDA TYPE STRING,
UBISDA TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
REPORT TYPE STRING,
EUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01_KGID_ANTW_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_P01_KGID_ANTW_STR-MANDT sy-vline 
WA_P01_KGID_ANTW_STR-GUID sy-vline 
WA_P01_KGID_ANTW_STR-ANTWNR sy-vline 
WA_P01_KGID_ANTW_STR-STATUS sy-vline 
WA_P01_KGID_ANTW_STR-ANTWART sy-vline 
WA_P01_KGID_ANTW_STR-NACHNR sy-vline 
WA_P01_KGID_ANTW_STR-NACHTXT sy-vline 
WA_P01_KGID_ANTW_STR-STDAT sy-vline 
WA_P01_KGID_ANTW_STR-STSID sy-vline 
WA_P01_KGID_ANTW_STR-FKSTILL sy-vline 
WA_P01_KGID_ANTW_STR-FKSTBEG sy-vline 
WA_P01_KGID_ANTW_STR-FKSPERR sy-vline 
WA_P01_KGID_ANTW_STR-FKSPBEG sy-vline 
WA_P01_KGID_ANTW_STR-FKSPEND sy-vline 
WA_P01_KGID_ANTW_STR-UFAMKAS sy-vline 
WA_P01_KGID_ANTW_STR-UFKNAME sy-vline 
WA_P01_KGID_ANTW_STR-UFKMAIL sy-vline 
WA_P01_KGID_ANTW_STR-UFKTEL sy-vline 
WA_P01_KGID_ANTW_STR-UFKFAX sy-vline 
WA_P01_KGID_ANTW_STR-UFKSTR sy-vline 
WA_P01_KGID_ANTW_STR-UFKHNR sy-vline 
WA_P01_KGID_ANTW_STR-UFKHNRZ sy-vline 
WA_P01_KGID_ANTW_STR-UFKPLZ sy-vline 
WA_P01_KGID_ANTW_STR-UFKORT sy-vline 
WA_P01_KGID_ANTW_STR-UFKPFACH sy-vline 
WA_P01_KGID_ANTW_STR-UFACHVS sy-vline 
WA_P01_KGID_ANTW_STR-UVONDA sy-vline 
WA_P01_KGID_ANTW_STR-UBISDA sy-vline 
WA_P01_KGID_ANTW_STR-DATUM sy-vline 
WA_P01_KGID_ANTW_STR-UZEIT sy-vline 
WA_P01_KGID_ANTW_STR-REPORT sy-vline 
WA_P01_KGID_ANTW_STR-EUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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