ABAP Select data from SAP table P01T_ADMIN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01T_ADMIN 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 P01T_ADMIN. 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 P01T_ADMIN 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_P01T_ADMIN TYPE STANDARD TABLE OF P01T_ADMIN,
      WA_P01T_ADMIN TYPE P01T_ADMIN,
      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: <P01T_ADMIN> TYPE P01T_ADMIN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01T_ADMIN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01T_ADMIN
  INTO TABLE IT_P01T_ADMIN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01T_ADMIN
*  INTO TABLE @DATA(IT_P01T_ADMIN2).
*--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_P01T_ADMIN INDEX 1 INTO DATA(WA_P01T_ADMIN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01T_ADMIN ASSIGNING <P01T_ADMIN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01T_ADMIN>-MANDT = 1.
<P01T_ADMIN>-PERNR = 1.
<P01T_ADMIN>-LBART = 1.
<P01T_ADMIN>-ENDDA = 1.
<P01T_ADMIN>-LFDNR = 1.

ENDLOOP.

LOOP AT IT_P01T_ADMIN INTO WA_P01T_ADMIN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01T_ADMIN-BEGDA, sy-vline,
  WA_P01T_ADMIN-NDTIC, sy-vline,
  WA_P01T_ADMIN-BLAND, sy-vline,
  WA_P01T_ADMIN-WERKS, sy-vline,
  WA_P01T_ADMIN-BTRTL, sy-vline,
  WA_P01T_ADMIN-LAND1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01T_ADMIN 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_P01T_ADMIN 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_P01T_ADMIN INTO WA_P01T_ADMIN.


*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 GJAHR, internal->external for field JAHR_AO
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P01T_ADMIN-JAHR_AO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P01T_ADMIN-JAHR_AO.
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_P01T_ADMIN_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
LBART TYPE STRING,
ENDDA TYPE STRING,
LFDNR TYPE STRING,
BEGDA TYPE STRING,
NDTIC TYPE STRING,
BLAND TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
LAND1 TYPE STRING,
AUSGP TYPE STRING,
AUPER TYPE STRING,
CDSEQ TYPE STRING,
LBFRD TYPE STRING,
NULGR TYPE STRING,
JAHR_AO TYPE STRING,
ANART TYPE STRING,
KMID TYPE STRING,
REF_KMID TYPE STRING,
X_KMID TYPE STRING,
GRUND_KOST TYPE STRING,
OMMAG TYPE STRING,
QUARANTAENE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01T_ADMIN_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_P01T_ADMIN_STR-MANDT sy-vline 
WA_P01T_ADMIN_STR-PERNR sy-vline 
WA_P01T_ADMIN_STR-LBART sy-vline 
WA_P01T_ADMIN_STR-ENDDA sy-vline 
WA_P01T_ADMIN_STR-LFDNR sy-vline 
WA_P01T_ADMIN_STR-BEGDA sy-vline 
WA_P01T_ADMIN_STR-NDTIC sy-vline 
WA_P01T_ADMIN_STR-BLAND sy-vline 
WA_P01T_ADMIN_STR-WERKS sy-vline 
WA_P01T_ADMIN_STR-BTRTL sy-vline 
WA_P01T_ADMIN_STR-LAND1 sy-vline 
WA_P01T_ADMIN_STR-AUSGP sy-vline 
WA_P01T_ADMIN_STR-AUPER sy-vline 
WA_P01T_ADMIN_STR-CDSEQ sy-vline 
WA_P01T_ADMIN_STR-LBFRD sy-vline 
WA_P01T_ADMIN_STR-NULGR sy-vline 
WA_P01T_ADMIN_STR-JAHR_AO sy-vline 
WA_P01T_ADMIN_STR-ANART sy-vline 
WA_P01T_ADMIN_STR-KMID sy-vline 
WA_P01T_ADMIN_STR-REF_KMID sy-vline 
WA_P01T_ADMIN_STR-X_KMID sy-vline 
WA_P01T_ADMIN_STR-GRUND_KOST sy-vline 
WA_P01T_ADMIN_STR-OMMAG sy-vline 
WA_P01T_ADMIN_STR-QUARANTAENE sy-vline      INTO ld_text SEPARATED BY SPACE.

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