ABAP Select data from SAP table PGBNIIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PGBNIIN
*  INTO TABLE @DATA(IT_PGBNIIN2).
*--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_PGBNIIN INDEX 1 INTO DATA(WA_PGBNIIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PGBNIIN>-PERMO = 1.
<PGBNIIN>-PRDNM = 1.
<PGBNIIN>-PRDYR = 1.
<PGBNIIN>-TPNIP = 1.
<PGBNIIN>-YDDRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PGBNIIN-YDDEE, sy-vline,
  WA_PGBNIIN-YDDER, sy-vline,
  WA_PGBNIIN-NITYP, sy-vline,
  WA_PGBNIIN-LEAV_DATE, sy-vline,
  WA_PGBNIIN-NIHRD, sy-vline,
  WA_PGBNIIN-REFND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PGBNIIN 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_PGBNIIN 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_PGBNIIN INTO WA_PGBNIIN.


*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 PRDYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PGBNIIN-PRDYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGBNIIN-PRDYR.
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_PGBNIIN_STR, 
PERMO TYPE STRING,
PRDNM TYPE STRING,
PRDYR TYPE STRING,
TPNIP TYPE STRING,
YDDRP TYPE STRING,
YDDEE TYPE STRING,
YDDER TYPE STRING,
NITYP TYPE STRING,
LEAV_DATE TYPE STRING,
NIHRD TYPE STRING,
REFND TYPE STRING,
RETRO_CONTS TYPE STRING,
PDATE TYPE STRING,
CURR TYPE STRING,
N34 TYPE STRING,
N35 TYPE STRING,
N39 TYPE STRING,
N44 TYPE STRING,
N45 TYPE STRING,
N46 TYPE STRING,
ATPNI TYPE STRING,
NI_OFFSET TYPE STRING,
N47 TYPE STRING,
N48 TYPE STRING,
N49 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PGBNIIN_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_PGBNIIN_STR-PERMO sy-vline 
WA_PGBNIIN_STR-PRDNM sy-vline 
WA_PGBNIIN_STR-PRDYR sy-vline 
WA_PGBNIIN_STR-TPNIP sy-vline 
WA_PGBNIIN_STR-YDDRP sy-vline 
WA_PGBNIIN_STR-YDDEE sy-vline 
WA_PGBNIIN_STR-YDDER sy-vline 
WA_PGBNIIN_STR-NITYP sy-vline 
WA_PGBNIIN_STR-LEAV_DATE sy-vline 
WA_PGBNIIN_STR-NIHRD sy-vline 
WA_PGBNIIN_STR-REFND sy-vline 
WA_PGBNIIN_STR-RETRO_CONTS sy-vline 
WA_PGBNIIN_STR-PDATE sy-vline 
WA_PGBNIIN_STR-CURR sy-vline 
WA_PGBNIIN_STR-N34 sy-vline 
WA_PGBNIIN_STR-N35 sy-vline 
WA_PGBNIIN_STR-N39 sy-vline 
WA_PGBNIIN_STR-N44 sy-vline 
WA_PGBNIIN_STR-N45 sy-vline 
WA_PGBNIIN_STR-N46 sy-vline 
WA_PGBNIIN_STR-ATPNI sy-vline 
WA_PGBNIIN_STR-NI_OFFSET sy-vline 
WA_PGBNIIN_STR-N47 sy-vline 
WA_PGBNIIN_STR-N48 sy-vline 
WA_PGBNIIN_STR-N49 sy-vline      INTO ld_text SEPARATED BY SPACE.

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