ABAP Select data from SAP table BP3100_UPD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BP3100_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 BP3100_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 BP3100_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_BP3100_UPD TYPE STANDARD TABLE OF BP3100_UPD,
      WA_BP3100_UPD TYPE BP3100_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: <BP3100_UPD> TYPE BP3100_UPD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BP3100_UPD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BP3100_UPD
  INTO TABLE IT_BP3100_UPD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BP3100_UPD
*  INTO TABLE @DATA(IT_BP3100_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_BP3100_UPD INDEX 1 INTO DATA(WA_BP3100_UPD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BP3100_UPD ASSIGNING <BP3100_UPD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BP3100_UPD>-MANDT = 1.
<BP3100_UPD>-PARTNER = 1.
<BP3100_UPD>-CRITER = 1.
<BP3100_UPD>-ADDTYPE = 1.
<BP3100_UPD>-DATA_TYPE = 1.

ENDLOOP.

LOOP AT IT_BP3100_UPD INTO WA_BP3100_UPD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BP3100_UPD-TIMESTAMP, sy-vline,
  WA_BP3100_UPD-COUNTER, sy-vline,
  WA_BP3100_UPD-CT_FIELD, sy-vline,
  WA_BP3100_UPD-XFELD, sy-vline,
  WA_BP3100_UPD-TEXT, sy-vline,
  WA_BP3100_UPD-AMNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BP3100_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_BP3100_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_BP3100_UPD INTO WA_BP3100_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 PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BP3100_UPD-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BP3100_UPD-PARTNER.
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_BP3100_UPD_STR, 
MANDT TYPE STRING,
PARTNER TYPE STRING,
CRITER TYPE STRING,
ADDTYPE TYPE STRING,
DATA_TYPE TYPE STRING,
TIMESTAMP TYPE STRING,
COUNTER TYPE STRING,
CT_FIELD TYPE STRING,
XFELD TYPE STRING,
TEXT TYPE STRING,
AMNT TYPE STRING,
CURR TYPE STRING,
DATEFR TYPE STRING,
DATETO TYPE STRING,
ADDATE TYPE STRING,
KZ TYPE STRING,
TITLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BP3100_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_BP3100_UPD_STR-MANDT sy-vline 
WA_BP3100_UPD_STR-PARTNER sy-vline 
WA_BP3100_UPD_STR-CRITER sy-vline 
WA_BP3100_UPD_STR-ADDTYPE sy-vline 
WA_BP3100_UPD_STR-DATA_TYPE sy-vline 
WA_BP3100_UPD_STR-TIMESTAMP sy-vline 
WA_BP3100_UPD_STR-COUNTER sy-vline 
WA_BP3100_UPD_STR-CT_FIELD sy-vline 
WA_BP3100_UPD_STR-XFELD sy-vline 
WA_BP3100_UPD_STR-TEXT sy-vline 
WA_BP3100_UPD_STR-AMNT sy-vline 
WA_BP3100_UPD_STR-CURR sy-vline 
WA_BP3100_UPD_STR-DATEFR sy-vline 
WA_BP3100_UPD_STR-DATETO sy-vline 
WA_BP3100_UPD_STR-ADDATE sy-vline 
WA_BP3100_UPD_STR-KZ sy-vline 
WA_BP3100_UPD_STR-TITLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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