ABAP Select data from SAP table PARTNER_GN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PARTNER_GN
*  INTO TABLE @DATA(IT_PARTNER_GN2).
*--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_PARTNER_GN INDEX 1 INTO DATA(WA_PARTNER_GN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PARTNER_GN>-RFBEL = 1.
<PARTNER_GN>-RFPOS = 1.
<PARTNER_GN>-PARVW = 1.
<PARTNER_GN>-KUNNR = 1.
<PARTNER_GN>-LIFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PARTNER_GN-PARNR, sy-vline,
  WA_PARTNER_GN-PERNR, sy-vline,
  WA_PARTNER_GN-KNREF, sy-vline,
  WA_PARTNER_GN-ADR_MAN, sy-vline,
  WA_PARTNER_GN-EMAIL, sy-vline,
  WA_PARTNER_GN-HOUSE_NUM1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PARTNER_GN 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_PARTNER_GN 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_PARTNER_GN INTO WA_PARTNER_GN.


*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 RFBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PARTNER_GN-RFBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PARTNER_GN-RFBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_PARTNER_GN-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PARTNER_GN-PARVW.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit SXIDN, internal->external for field EMAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_PARTNER_GN-EMAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PARTNER_GN-EMAIL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PARTNER_GN-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PARTNER_GN-SPRAS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit SXIDN, internal->external for field EMAIL_ADDR
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_PARTNER_GN-EMAIL_ADDR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PARTNER_GN-EMAIL_ADDR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BP_REF_ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PARTNER_GN-BP_REF_ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PARTNER_GN-BP_REF_ADRNR.
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_PARTNER_GN_STR, 
RFBEL TYPE STRING,
RFPOS TYPE STRING,
PARVW TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
PARNR TYPE STRING,
PERNR TYPE STRING,
KNREF TYPE STRING,
ADR_MAN TYPE STRING,
EMAIL TYPE STRING,
HOUSE_NUM1 TYPE STRING,
C_O_NAME TYPE STRING,
TITLE TYPE STRING,
HOUSE_NUM2 TYPE STRING,
STR_SUPPL2 TYPE STRING,
STR_SUPPL3 TYPE STRING,
LOCATION TYPE STRING,
BUILDING TYPE STRING,
FLOOR TYPE STRING,
ROOMNUMBER TYPE STRING,
REMARK TYPE STRING,
ADRNR TYPE STRING,
ANRED TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
STRAS TYPE STRING,
LAND1 TYPE STRING,
PSTLZ TYPE STRING,
PSTL2 TYPE STRING,
PFORT TYPE STRING,
ORT01 TYPE STRING,
ORT02 TYPE STRING,
REGIO TYPE STRING,
CITYC TYPE STRING,
COUNC TYPE STRING,
PFACH TYPE STRING,
TELF1 TYPE STRING,
TELF2 TYPE STRING,
TELBX TYPE STRING,
TELFX TYPE STRING,
TELTX TYPE STRING,
TELX1 TYPE STRING,
SPRAS TYPE STRING,
LZONE TYPE STRING,
HAUSN TYPE STRING,
PARGE TYPE STRING,
NAME_LIST TYPE STRING,
TXJCD TYPE STRING,
ADRNP TYPE STRING,
ADDRESS_TYPE TYPE STRING,
DUEFL TYPE STRING,
STOCK TYPE STRING,
STRS2 TYPE STRING,
STRASNA TYPE STRING,
EMAIL_ADDR TYPE STRING,
MOBNUM TYPE STRING,
ADRDA TYPE STRING,
BP_REF_ADRNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PARTNER_GN_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_PARTNER_GN_STR-RFBEL sy-vline 
WA_PARTNER_GN_STR-RFPOS sy-vline 
WA_PARTNER_GN_STR-PARVW sy-vline 
WA_PARTNER_GN_STR-KUNNR sy-vline 
WA_PARTNER_GN_STR-LIFNR sy-vline 
WA_PARTNER_GN_STR-PARNR sy-vline 
WA_PARTNER_GN_STR-PERNR sy-vline 
WA_PARTNER_GN_STR-KNREF sy-vline 
WA_PARTNER_GN_STR-ADR_MAN sy-vline 
WA_PARTNER_GN_STR-EMAIL sy-vline 
WA_PARTNER_GN_STR-HOUSE_NUM1 sy-vline 
WA_PARTNER_GN_STR-C_O_NAME sy-vline 
WA_PARTNER_GN_STR-TITLE sy-vline 
WA_PARTNER_GN_STR-HOUSE_NUM2 sy-vline 
WA_PARTNER_GN_STR-STR_SUPPL2 sy-vline 
WA_PARTNER_GN_STR-STR_SUPPL3 sy-vline 
WA_PARTNER_GN_STR-LOCATION sy-vline 
WA_PARTNER_GN_STR-BUILDING sy-vline 
WA_PARTNER_GN_STR-FLOOR sy-vline 
WA_PARTNER_GN_STR-ROOMNUMBER sy-vline 
WA_PARTNER_GN_STR-REMARK sy-vline 
WA_PARTNER_GN_STR-ADRNR sy-vline 
WA_PARTNER_GN_STR-ANRED sy-vline 
WA_PARTNER_GN_STR-NAME1 sy-vline 
WA_PARTNER_GN_STR-NAME2 sy-vline 
WA_PARTNER_GN_STR-NAME3 sy-vline 
WA_PARTNER_GN_STR-NAME4 sy-vline 
WA_PARTNER_GN_STR-STRAS sy-vline 
WA_PARTNER_GN_STR-LAND1 sy-vline 
WA_PARTNER_GN_STR-PSTLZ sy-vline 
WA_PARTNER_GN_STR-PSTL2 sy-vline 
WA_PARTNER_GN_STR-PFORT sy-vline 
WA_PARTNER_GN_STR-ORT01 sy-vline 
WA_PARTNER_GN_STR-ORT02 sy-vline 
WA_PARTNER_GN_STR-REGIO sy-vline 
WA_PARTNER_GN_STR-CITYC sy-vline 
WA_PARTNER_GN_STR-COUNC sy-vline 
WA_PARTNER_GN_STR-PFACH sy-vline 
WA_PARTNER_GN_STR-TELF1 sy-vline 
WA_PARTNER_GN_STR-TELF2 sy-vline 
WA_PARTNER_GN_STR-TELBX sy-vline 
WA_PARTNER_GN_STR-TELFX sy-vline 
WA_PARTNER_GN_STR-TELTX sy-vline 
WA_PARTNER_GN_STR-TELX1 sy-vline 
WA_PARTNER_GN_STR-SPRAS sy-vline 
WA_PARTNER_GN_STR-LZONE sy-vline 
WA_PARTNER_GN_STR-HAUSN sy-vline 
WA_PARTNER_GN_STR-PARGE sy-vline 
WA_PARTNER_GN_STR-NAME_LIST sy-vline 
WA_PARTNER_GN_STR-TXJCD sy-vline 
WA_PARTNER_GN_STR-ADRNP sy-vline 
WA_PARTNER_GN_STR-ADDRESS_TYPE sy-vline 
WA_PARTNER_GN_STR-DUEFL sy-vline 
WA_PARTNER_GN_STR-STOCK sy-vline 
WA_PARTNER_GN_STR-STRS2 sy-vline 
WA_PARTNER_GN_STR-STRASNA sy-vline 
WA_PARTNER_GN_STR-EMAIL_ADDR sy-vline 
WA_PARTNER_GN_STR-MOBNUM sy-vline 
WA_PARTNER_GN_STR-ADRDA sy-vline 
WA_PARTNER_GN_STR-BP_REF_ADRNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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