ABAP Select data from SAP table P05_POSTCO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P05_POSTCO 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 P05_POSTCO. 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 P05_POSTCO 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_P05_POSTCO TYPE STANDARD TABLE OF P05_POSTCO,
      WA_P05_POSTCO TYPE P05_POSTCO,
      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: <P05_POSTCO> TYPE P05_POSTCO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P05_POSTCO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P05_POSTCO
  INTO TABLE IT_P05_POSTCO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P05_POSTCO
*  INTO TABLE @DATA(IT_P05_POSTCO2).
*--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_P05_POSTCO INDEX 1 INTO DATA(WA_P05_POSTCO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P05_POSTCO ASSIGNING <P05_POSTCO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P05_POSTCO>-TRAFFIC_LIGHT = 1.
<P05_POSTCO>-PERNR = 1.
<P05_POSTCO>-SUBTY = 1.
<P05_POSTCO>-MESSAGE_TEXT = 1.
<P05_POSTCO>-IN_BIM = 1.

ENDLOOP.

LOOP AT IT_P05_POSTCO INTO WA_P05_POSTCO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P05_POSTCO-BEGDA, sy-vline,
  WA_P05_POSTCO-ENDDA, sy-vline,
  WA_P05_POSTCO-ENAME, sy-vline,
  WA_P05_POSTCO-VORNA, sy-vline,
  WA_P05_POSTCO-NACHN, sy-vline,
  WA_P05_POSTCO-OADRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P05_POSTCO 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_P05_POSTCO 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_P05_POSTCO INTO WA_P05_POSTCO.


*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_P05_POSTCO_STR, 
TRAFFIC_LIGHT TYPE STRING,
PERNR TYPE STRING,
SUBTY TYPE STRING,
MESSAGE_TEXT TYPE STRING,
IN_BIM TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
ENAME TYPE STRING,
VORNA TYPE STRING,
NACHN TYPE STRING,
OADRS TYPE STRING,
NADRS TYPE STRING,
STRAS TYPE STRING,
HSNMR TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
NSTRAS TYPE STRING,
NHSNMR TYPE STRING,
NPSTLZ TYPE STRING,
NORT01 TYPE STRING,
N_PERSONEN TYPE STRING,
N_RECORDS TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
PROBCLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P05_POSTCO_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_P05_POSTCO_STR-TRAFFIC_LIGHT sy-vline 
WA_P05_POSTCO_STR-PERNR sy-vline 
WA_P05_POSTCO_STR-SUBTY sy-vline 
WA_P05_POSTCO_STR-MESSAGE_TEXT sy-vline 
WA_P05_POSTCO_STR-IN_BIM sy-vline 
WA_P05_POSTCO_STR-BEGDA sy-vline 
WA_P05_POSTCO_STR-ENDDA sy-vline 
WA_P05_POSTCO_STR-ENAME sy-vline 
WA_P05_POSTCO_STR-VORNA sy-vline 
WA_P05_POSTCO_STR-NACHN sy-vline 
WA_P05_POSTCO_STR-OADRS sy-vline 
WA_P05_POSTCO_STR-NADRS sy-vline 
WA_P05_POSTCO_STR-STRAS sy-vline 
WA_P05_POSTCO_STR-HSNMR sy-vline 
WA_P05_POSTCO_STR-PSTLZ sy-vline 
WA_P05_POSTCO_STR-ORT01 sy-vline 
WA_P05_POSTCO_STR-NSTRAS sy-vline 
WA_P05_POSTCO_STR-NHSNMR sy-vline 
WA_P05_POSTCO_STR-NPSTLZ sy-vline 
WA_P05_POSTCO_STR-NORT01 sy-vline 
WA_P05_POSTCO_STR-N_PERSONEN sy-vline 
WA_P05_POSTCO_STR-N_RECORDS sy-vline 
WA_P05_POSTCO_STR-MSGTY sy-vline 
WA_P05_POSTCO_STR-MSGID sy-vline 
WA_P05_POSTCO_STR-MSGNO sy-vline 
WA_P05_POSTCO_STR-MSGV1 sy-vline 
WA_P05_POSTCO_STR-MSGV2 sy-vline 
WA_P05_POSTCO_STR-MSGV3 sy-vline 
WA_P05_POSTCO_STR-MSGV4 sy-vline 
WA_P05_POSTCO_STR-PROBCLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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