ABAP Select data from SAP table BPI020 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP BPI020 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 BPI020. 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 BPI020 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_BPI020 TYPE STANDARD TABLE OF BPI020,
      WA_BPI020 TYPE BPI020,
      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: <BPI020> TYPE BPI020.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BPI020.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BPI020
  INTO TABLE IT_BPI020.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BPI020
*  INTO TABLE @DATA(IT_BPI0202).
*--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_BPI020 INDEX 1 INTO DATA(WA_BPI0202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BPI020 ASSIGNING <BPI020>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BPI020>-ORG_NAME = 1.
<BPI020>-ORG_NAME2 = 1.
<BPI020>-CALENDARID = 1.
<BPI020>-LEGAL_ENTY = 1.
<BPI020>-LEGAL_ORG = 1.

ENDLOOP.

LOOP AT IT_BPI020 INTO WA_BPI020.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BPI020-BALANCE_FL, sy-vline,
  WA_BPI020-FOUND_YEAR, sy-vline,
  WA_BPI020-COMM_REGIS, sy-vline,
  WA_BPI020-COMM_REG_D, sy-vline,
  WA_BPI020-CNTRY_COMP, sy-vline,
  WA_BPI020-REGIO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BPI020 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_BPI020 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_BPI020 INTO WA_BPI020.


*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 FOUND_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BPI020-FOUND_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPI020-FOUND_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field CAP_INCR_Y
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BPI020-CAP_INCR_Y
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPI020-CAP_INCR_Y.
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_BPI020_STR, 
ORG_NAME TYPE STRING,
ORG_NAME2 TYPE STRING,
CALENDARID TYPE STRING,
LEGAL_ENTY TYPE STRING,
LEGAL_ORG TYPE STRING,
BALANCE_FL TYPE STRING,
FOUND_YEAR TYPE STRING,
COMM_REGIS TYPE STRING,
COMM_REG_D TYPE STRING,
CNTRY_COMP TYPE STRING,
REGIO TYPE STRING,
COMP_HEAD TYPE STRING,
LIQUID_DAT TYPE STRING,
COMP_NR TYPE STRING,
COMP_NR_AD TYPE STRING,
BUBKZ TYPE STRING,
IND_SECTOR TYPE STRING,
MIN_RESERV TYPE STRING,
BAL_SH_CUR TYPE STRING,
CAP_INCR_A TYPE STRING,
CAP_INCR_Y TYPE STRING,
BANKL TYPE STRING,
BANKS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BPI020_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_BPI020_STR-ORG_NAME sy-vline 
WA_BPI020_STR-ORG_NAME2 sy-vline 
WA_BPI020_STR-CALENDARID sy-vline 
WA_BPI020_STR-LEGAL_ENTY sy-vline 
WA_BPI020_STR-LEGAL_ORG sy-vline 
WA_BPI020_STR-BALANCE_FL sy-vline 
WA_BPI020_STR-FOUND_YEAR sy-vline 
WA_BPI020_STR-COMM_REGIS sy-vline 
WA_BPI020_STR-COMM_REG_D sy-vline 
WA_BPI020_STR-CNTRY_COMP sy-vline 
WA_BPI020_STR-REGIO sy-vline 
WA_BPI020_STR-COMP_HEAD sy-vline 
WA_BPI020_STR-LIQUID_DAT sy-vline 
WA_BPI020_STR-COMP_NR sy-vline 
WA_BPI020_STR-COMP_NR_AD sy-vline 
WA_BPI020_STR-BUBKZ sy-vline 
WA_BPI020_STR-IND_SECTOR sy-vline 
WA_BPI020_STR-MIN_RESERV sy-vline 
WA_BPI020_STR-BAL_SH_CUR sy-vline 
WA_BPI020_STR-CAP_INCR_A sy-vline 
WA_BPI020_STR-CAP_INCR_Y sy-vline 
WA_BPI020_STR-BANKL sy-vline 
WA_BPI020_STR-BANKS sy-vline      INTO ld_text SEPARATED BY SPACE.

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