ABAP Select data from SAP table BIW_ISU_AMIEM_ATTRS_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BIW_ISU_AMIEM_ATTRS_DATA
*  INTO TABLE @DATA(IT_BIW_ISU_AMIEM_ATTRS_DATA2).
*--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_BIW_ISU_AMIEM_ATTRS_DATA INDEX 1 INTO DATA(WA_BIW_ISU_AMIEM_ATTRS_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BIW_ISU_AMIEM_ATTRS_DATA>-MANDT = 1.
<BIW_ISU_AMIEM_ATTRS_DATA>-EVENTID = 1.
<BIW_ISU_AMIEM_ATTRS_DATA>-ATTRIBUTEID = 1.
<BIW_ISU_AMIEM_ATTRS_DATA>-ATTRIBUTETYPE = 1.
<BIW_ISU_AMIEM_ATTRS_DATA>-AMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BIW_ISU_AMIEM_ATTRS_DATA-CURRENCY, sy-vline,
  WA_BIW_ISU_AMIEM_ATTRS_DATA-QUANTITY, sy-vline,
  WA_BIW_ISU_AMIEM_ATTRS_DATA-MEASUREMENTUNIT, sy-vline,
  WA_BIW_ISU_AMIEM_ATTRS_DATA-DECIMALVALUE, sy-vline,
  WA_BIW_ISU_AMIEM_ATTRS_DATA-FLOATVALUE, sy-vline,
  WA_BIW_ISU_AMIEM_ATTRS_DATA-INTEGERVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BIW_ISU_AMIEM_ATTRS_DATA 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_BIW_ISU_AMIEM_ATTRS_DATA 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_BIW_ISU_AMIEM_ATTRS_DATA INTO WA_BIW_ISU_AMIEM_ATTRS_DATA.


*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 CUNIT, internal->external for field MEASUREMENTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_AMIEM_ATTRS_DATA-MEASUREMENTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_AMIEM_ATTRS_DATA-MEASUREMENTUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_AMIEM_ATTRS_DATA-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_AMIEM_ATTRS_DATA-SPRAS.
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_BIW_ISU_AMIEM_ATTRS_DATA_STR, 
MANDT TYPE STRING,
EVENTID TYPE STRING,
ATTRIBUTEID TYPE STRING,
ATTRIBUTETYPE TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
QUANTITY TYPE STRING,
MEASUREMENTUNIT TYPE STRING,
DECIMALVALUE TYPE STRING,
FLOATVALUE TYPE STRING,
INTEGERVALUE TYPE STRING,
ATTRDATE TYPE STRING,
ATTRTIME TYPE STRING,
ATTRDATETIME TYPE STRING,
ATTRINDICATOR TYPE STRING,
CODE TYPE STRING,
IDENTIFIER TYPE STRING,
PERCENT TYPE STRING,
DURATION TYPE STRING,
TEXT TYPE STRING,
SPRAS TYPE STRING,
LOEVM TYPE STRING,
UPDMOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BIW_ISU_AMIEM_ATTRS_DATA_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_BIW_ISU_AMIEM_ATTRS_DATA_STR-MANDT sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-EVENTID sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-ATTRIBUTEID sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-ATTRIBUTETYPE sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-AMOUNT sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-CURRENCY sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-QUANTITY sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-MEASUREMENTUNIT sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-DECIMALVALUE sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-FLOATVALUE sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-INTEGERVALUE sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-ATTRDATE sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-ATTRTIME sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-ATTRDATETIME sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-ATTRINDICATOR sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-CODE sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-IDENTIFIER sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-PERCENT sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-DURATION sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-TEXT sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-SPRAS sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-LOEVM sy-vline 
WA_BIW_ISU_AMIEM_ATTRS_DATA_STR-UPDMOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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