ABAP Select data from SAP table BP1020_UPD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BP1020_UPD 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 BP1020_UPD. 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 BP1020_UPD 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_BP1020_UPD TYPE STANDARD TABLE OF BP1020_UPD,
      WA_BP1020_UPD TYPE BP1020_UPD,
      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: <BP1020_UPD> TYPE BP1020_UPD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BP1020_UPD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BP1020_UPD
  INTO TABLE IT_BP1020_UPD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BP1020_UPD
*  INTO TABLE @DATA(IT_BP1020_UPD2).
*--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_BP1020_UPD INDEX 1 INTO DATA(WA_BP1020_UPD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BP1020_UPD ASSIGNING <BP1020_UPD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BP1020_UPD>-MANDT = 1.
<BP1020_UPD>-PARTNR = 1.
<BP1020_UPD>-STCD1 = 1.
<BP1020_UPD>-STCD2 = 1.
<BP1020_UPD>-TAX_RES = 1.

ENDLOOP.

LOOP AT IT_BP1020_UPD INTO WA_BP1020_UPD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BP1020_UPD-COUNC, sy-vline,
  WA_BP1020_UPD-CITYC, sy-vline,
  WA_BP1020_UPD-STKZA, sy-vline,
  WA_BP1020_UPD-STKZU, sy-vline,
  WA_BP1020_UPD-STCEG, sy-vline,
  WA_BP1020_UPD-TXJCD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BP1020_UPD 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_BP1020_UPD 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_BP1020_UPD INTO WA_BP1020_UPD.


*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 PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BP1020_UPD-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BP1020_UPD-PARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FISKN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BP1020_UPD-FISKN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BP1020_UPD-FISKN.
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_BP1020_UPD_STR, 
MANDT TYPE STRING,
PARTNR TYPE STRING,
STCD1 TYPE STRING,
STCD2 TYPE STRING,
TAX_RES TYPE STRING,
COUNC TYPE STRING,
CITYC TYPE STRING,
STKZA TYPE STRING,
STKZU TYPE STRING,
STCEG TYPE STRING,
TXJCD TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
FISKN TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BP1020_UPD_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_BP1020_UPD_STR-MANDT sy-vline 
WA_BP1020_UPD_STR-PARTNR sy-vline 
WA_BP1020_UPD_STR-STCD1 sy-vline 
WA_BP1020_UPD_STR-STCD2 sy-vline 
WA_BP1020_UPD_STR-TAX_RES sy-vline 
WA_BP1020_UPD_STR-COUNC sy-vline 
WA_BP1020_UPD_STR-CITYC sy-vline 
WA_BP1020_UPD_STR-STKZA sy-vline 
WA_BP1020_UPD_STR-STKZU sy-vline 
WA_BP1020_UPD_STR-STCEG sy-vline 
WA_BP1020_UPD_STR-TXJCD sy-vline 
WA_BP1020_UPD_STR-COUNTRY sy-vline 
WA_BP1020_UPD_STR-REGION sy-vline 
WA_BP1020_UPD_STR-FISKN sy-vline 
WA_BP1020_UPD_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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