ABAP Select data from SAP table PNPOBA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PNPOBA
*  INTO TABLE @DATA(IT_PNPOBA2).
*--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_PNPOBA INDEX 1 INTO DATA(WA_PNPOBA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PNPOBA>-MANDT = 1.
<PNPOBA>-PNGUID = 1.
<PNPOBA>-PNCNT = 1.
<PNPOBA>-PNTXCNT = 1.
<PNPOBA>-POBNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PNPOBA-AENNR, sy-vline,
  WA_PNPOBA-DELFLG, sy-vline,
  WA_PNPOBA-VALFROM, sy-vline,
  WA_PNPOBA-VALTO, sy-vline,
  WA_PNPOBA-LOTMIN, sy-vline,
  WA_PNPOBA-LOTMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PNPOBA 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_PNPOBA 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_PNPOBA INTO WA_PNPOBA.


*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 ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PNPOBA-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PNPOBA-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LOTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PNPOBA-LOTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PNPOBA-LOTUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCP_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PNPOBA-RCP_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PNPOBA-RCP_LOGSYS.
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_PNPOBA_STR, 
MANDT TYPE STRING,
PNGUID TYPE STRING,
PNCNT TYPE STRING,
PNTXCNT TYPE STRING,
POBNR TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
VALFROM TYPE STRING,
VALTO TYPE STRING,
LOTMIN TYPE STRING,
LOTMAX TYPE STRING,
LOTUNIT TYPE STRING,
OTYPE_ORGID TYPE STRING,
REALO TYPE STRING,
POB_TIMSTMP TYPE STRING,
COPY_FROM TYPE STRING,
RCP_CREADAT TYPE STRING,
RCP_CREABY TYPE STRING,
RCP_CHNGDAT TYPE STRING,
RCP_CHNGBY TYPE STRING,
RCP_LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PNPOBA_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_PNPOBA_STR-MANDT sy-vline 
WA_PNPOBA_STR-PNGUID sy-vline 
WA_PNPOBA_STR-PNCNT sy-vline 
WA_PNPOBA_STR-PNTXCNT sy-vline 
WA_PNPOBA_STR-POBNR sy-vline 
WA_PNPOBA_STR-AENNR sy-vline 
WA_PNPOBA_STR-DELFLG sy-vline 
WA_PNPOBA_STR-VALFROM sy-vline 
WA_PNPOBA_STR-VALTO sy-vline 
WA_PNPOBA_STR-LOTMIN sy-vline 
WA_PNPOBA_STR-LOTMAX sy-vline 
WA_PNPOBA_STR-LOTUNIT sy-vline 
WA_PNPOBA_STR-OTYPE_ORGID sy-vline 
WA_PNPOBA_STR-REALO sy-vline 
WA_PNPOBA_STR-POB_TIMSTMP sy-vline 
WA_PNPOBA_STR-COPY_FROM sy-vline 
WA_PNPOBA_STR-RCP_CREADAT sy-vline 
WA_PNPOBA_STR-RCP_CREABY sy-vline 
WA_PNPOBA_STR-RCP_CHNGDAT sy-vline 
WA_PNPOBA_STR-RCP_CHNGBY sy-vline 
WA_PNPOBA_STR-RCP_LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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