ABAP Select data from SAP table P01A1_DBAN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01A1_DBAN 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 P01A1_DBAN. 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 P01A1_DBAN 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_P01A1_DBAN TYPE STANDARD TABLE OF P01A1_DBAN,
      WA_P01A1_DBAN TYPE P01A1_DBAN,
      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: <P01A1_DBAN> TYPE P01A1_DBAN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01A1_DBAN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01A1_DBAN
  INTO TABLE IT_P01A1_DBAN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01A1_DBAN
*  INTO TABLE @DATA(IT_P01A1_DBAN2).
*--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_P01A1_DBAN INDEX 1 INTO DATA(WA_P01A1_DBAN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01A1_DBAN ASSIGNING <P01A1_DBAN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01A1_DBAN>-MANDT = 1.
<P01A1_DBAN>-GUID = 1.
<P01A1_DBAN>-LFDNR = 1.
<P01A1_DBAN>-ART = 1.
<P01A1_DBAN>-STRASSE = 1.

ENDLOOP.

LOOP AT IT_P01A1_DBAN INTO WA_P01A1_DBAN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01A1_DBAN-HAUSNR, sy-vline,
  WA_P01A1_DBAN-ZUSATZ, sy-vline,
  WA_P01A1_DBAN-PLZ, sy-vline,
  WA_P01A1_DBAN-ORT, sy-vline,
  WA_P01A1_DBAN-LAND, sy-vline,
  WA_P01A1_DBAN-LDKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01A1_DBAN 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_P01A1_DBAN 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_P01A1_DBAN INTO WA_P01A1_DBAN.


*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_P01A1_DBAN_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
LFDNR TYPE STRING,
ART TYPE STRING,
STRASSE TYPE STRING,
HAUSNR TYPE STRING,
ZUSATZ TYPE STRING,
PLZ TYPE STRING,
ORT TYPE STRING,
LAND TYPE STRING,
LDKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01A1_DBAN_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_P01A1_DBAN_STR-MANDT sy-vline 
WA_P01A1_DBAN_STR-GUID sy-vline 
WA_P01A1_DBAN_STR-LFDNR sy-vline 
WA_P01A1_DBAN_STR-ART sy-vline 
WA_P01A1_DBAN_STR-STRASSE sy-vline 
WA_P01A1_DBAN_STR-HAUSNR sy-vline 
WA_P01A1_DBAN_STR-ZUSATZ sy-vline 
WA_P01A1_DBAN_STR-PLZ sy-vline 
WA_P01A1_DBAN_STR-ORT sy-vline 
WA_P01A1_DBAN_STR-LAND sy-vline 
WA_P01A1_DBAN_STR-LDKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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