ABAP Select data from SAP table PD3FLAG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PD3FLAG 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 PD3FLAG. 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 PD3FLAG 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_PD3FLAG TYPE STANDARD TABLE OF PD3FLAG,
      WA_PD3FLAG TYPE PD3FLAG,
      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: <PD3FLAG> TYPE PD3FLAG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PD3FLAG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PD3FLAG
  INTO TABLE IT_PD3FLAG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PD3FLAG
*  INTO TABLE @DATA(IT_PD3FLAG2).
*--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_PD3FLAG INDEX 1 INTO DATA(WA_PD3FLAG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PD3FLAG ASSIGNING <PD3FLAG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PD3FLAG>-MANDT = 1.
<PD3FLAG>-PERNR = 1.
<PD3FLAG>-JAHR = 1.
<PD3FLAG>-MNR = 1.
<PD3FLAG>-FLID = 1.

ENDLOOP.

LOOP AT IT_PD3FLAG INTO WA_PD3FLAG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PD3FLAG-ANZAHL, sy-vline,
  WA_PD3FLAG-MDATUM, sy-vline,
  WA_PD3FLAG-MZEIT, sy-vline,
  WA_PD3FLAG-MREPORT, sy-vline,
  WA_PD3FLAG-MUSER, sy-vline,
  WA_PD3FLAG-TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PD3FLAG 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_PD3FLAG 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_PD3FLAG INTO WA_PD3FLAG.


*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_PD3FLAG_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
JAHR TYPE STRING,
MNR TYPE STRING,
FLID TYPE STRING,
ANZAHL TYPE STRING,
MDATUM TYPE STRING,
MZEIT TYPE STRING,
MREPORT TYPE STRING,
MUSER TYPE STRING,
TEXT TYPE STRING,
DATNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PD3FLAG_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_PD3FLAG_STR-MANDT sy-vline 
WA_PD3FLAG_STR-PERNR sy-vline 
WA_PD3FLAG_STR-JAHR sy-vline 
WA_PD3FLAG_STR-MNR sy-vline 
WA_PD3FLAG_STR-FLID sy-vline 
WA_PD3FLAG_STR-ANZAHL sy-vline 
WA_PD3FLAG_STR-MDATUM sy-vline 
WA_PD3FLAG_STR-MZEIT sy-vline 
WA_PD3FLAG_STR-MREPORT sy-vline 
WA_PD3FLAG_STR-MUSER sy-vline 
WA_PD3FLAG_STR-TEXT sy-vline 
WA_PD3FLAG_STR-DATNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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