ABAP Select data from SAP table WZRE_S_POSTING_PARTNER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WZRE_S_POSTING_PARTNER
*  INTO TABLE @DATA(IT_WZRE_S_POSTING_PARTNER2).
*--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_WZRE_S_POSTING_PARTNER INDEX 1 INTO DATA(WA_WZRE_S_POSTING_PARTNER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WZRE_S_POSTING_PARTNER>-INTPO = 1.
<WZRE_S_POSTING_PARTNER>-OLDPO = 1.
<WZRE_S_POSTING_PARTNER>-EXT_PARTNER_FUNC = 1.
<WZRE_S_POSTING_PARTNER>-EXT_PARTNER = 1.
<WZRE_S_POSTING_PARTNER>-EXT_PARTNER_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WZRE_S_POSTING_PARTNER-OLDNR_P, sy-vline,
  WA_WZRE_S_POSTING_PARTNER-OLDPO_P, sy-vline,
  WA_WZRE_S_POSTING_PARTNER-MANDT_P, sy-vline,
  WA_WZRE_S_POSTING_PARTNER-WBELN_P, sy-vline,
  WA_WZRE_S_POSTING_PARTNER-POSNR_P, sy-vline,
  WA_WZRE_S_POSTING_PARTNER-PARVW_P, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WZRE_S_POSTING_PARTNER 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_WZRE_S_POSTING_PARTNER 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_WZRE_S_POSTING_PARTNER INTO WA_WZRE_S_POSTING_PARTNER.


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

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

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

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

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

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

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

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

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

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

*Conversion exit ISOLA, internal->external for field SPRAS_P
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_WZRE_S_POSTING_PARTNER-SPRAS_P
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WZRE_S_POSTING_PARTNER-SPRAS_P.
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_WZRE_S_POSTING_PARTNER_STR, 
INTPO TYPE STRING,
OLDPO TYPE STRING,
EXT_PARTNER_FUNC TYPE STRING,
EXT_PARTNER TYPE STRING,
EXT_PARTNER_TYPE TYPE STRING,
OLDNR_P TYPE STRING,
OLDPO_P TYPE STRING,
MANDT_P TYPE STRING,
WBELN_P TYPE STRING,
POSNR_P TYPE STRING,
PARVW_P TYPE STRING,
PARZA_P TYPE STRING,
ERNAM_P TYPE STRING,
ERDAT_P TYPE STRING,
LIFNR_P TYPE STRING,
KUNNR_P TYPE STRING,
DEFPA_P TYPE STRING,
PARNR_P TYPE STRING,
PERNR_P TYPE STRING,
ADDRESS_P TYPE STRING,
KNREF_P TYPE STRING,
_DATAAGING_P TYPE STRING,
LAND1_P TYPE STRING,
REGIO_P TYPE STRING,
ASSIGNED_BP_P TYPE STRING,
ADDR_OPERATION_P TYPE STRING,
ADDR_TYPE_P TYPE STRING,
ADRNP_P TYPE STRING,
BP_REF_ADRNR_P TYPE STRING,
PLACE_HOLDER_P TYPE STRING,
ADRDAT_P TYPE STRING,
ADRNR_P TYPE STRING,
XCPDK_P TYPE STRING,
STCEG_P TYPE STRING,
ADRDA_P TYPE STRING,
NAME1_P TYPE STRING,
NRART_P TYPE STRING,
PARVW_TEXT_P TYPE STRING,
SORT_P TYPE STRING,
ICON_PARTNER_P TYPE STRING,
ICON_ADDRESS_P TYPE STRING,
UPDKZ_P TYPE STRING,
ENHANCED_P TYPE STRING,
PARTNER_P TYPE STRING,
SPRAS_P TYPE STRING,
NO_SEARCH_P TYPE STRING,
MODEL_ADJUSTED_P TYPE STRING,
INDEX_P TYPE STRING,
CID_P TYPE STRING,
PID_P TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WZRE_S_POSTING_PARTNER_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_WZRE_S_POSTING_PARTNER_STR-INTPO sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-OLDPO sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-EXT_PARTNER_FUNC sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-EXT_PARTNER sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-EXT_PARTNER_TYPE sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-OLDNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-OLDPO_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-MANDT_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-WBELN_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-POSNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PARVW_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PARZA_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ERNAM_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ERDAT_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-LIFNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-KUNNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-DEFPA_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PARNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PERNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ADDRESS_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-KNREF_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-_DATAAGING_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-LAND1_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-REGIO_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ASSIGNED_BP_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ADDR_OPERATION_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ADDR_TYPE_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ADRNP_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-BP_REF_ADRNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PLACE_HOLDER_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ADRDAT_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ADRNR_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-XCPDK_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-STCEG_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ADRDA_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-NAME1_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-NRART_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PARVW_TEXT_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-SORT_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ICON_PARTNER_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ICON_ADDRESS_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-UPDKZ_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-ENHANCED_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PARTNER_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-SPRAS_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-NO_SEARCH_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-MODEL_ADJUSTED_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-INDEX_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-CID_P sy-vline 
WA_WZRE_S_POSTING_PARTNER_STR-PID_P sy-vline      INTO ld_text SEPARATED BY SPACE.

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