ABAP Select data from SAP table PNPOBS_DB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PNPOBS_DB
*  INTO TABLE @DATA(IT_PNPOBS_DB2).
*--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_PNPOBS_DB INDEX 1 INTO DATA(WA_PNPOBS_DB2).


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

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

ENDLOOP.

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

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


*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_PNPOBS_DB-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PNPOBS_DB-AENNR.
WRITE:/ 'New Value:', ld_input.

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

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

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