ABAP Select data from SAP table BSTOOLSATP_UNITTEST_STRUC_02B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BSTOOLSATP_UNITTEST_STRUC_02B 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 BSTOOLSATP_UNITTEST_STRUC_02B. 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 BSTOOLSATP_UNITTEST_STRUC_02B 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_BSTOOLSATP_UNITTEST_STRUC_02B TYPE STANDARD TABLE OF BSTOOLSATP_UNITTEST_STRUC_02B,
      WA_BSTOOLSATP_UNITTEST_STRUC_02B TYPE BSTOOLSATP_UNITTEST_STRUC_02B,
      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: <BSTOOLSATP_UNITTEST_STRUC_02B> TYPE BSTOOLSATP_UNITTEST_STRUC_02B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BSTOOLSATP_UNITTEST_STRUC_02B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BSTOOLSATP_UNITTEST_STRUC_02B
  INTO TABLE IT_BSTOOLSATP_UNITTEST_STRUC_02B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BSTOOLSATP_UNITTEST_STRUC_02B
*  INTO TABLE @DATA(IT_BSTOOLSATP_UNITTEST_STRUC_02B2).
*--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_BSTOOLSATP_UNITTEST_STRUC_02B INDEX 1 INTO DATA(WA_BSTOOLSATP_UNITTEST_STRUC_02B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BSTOOLSATP_UNITTEST_STRUC_02B ASSIGNING <BSTOOLSATP_UNITTEST_STRUC_02B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BSTOOLSATP_UNITTEST_STRUC_02B>-CONTROLLER = 1.
<BSTOOLSATP_UNITTEST_STRUC_02B>-TABIX = 1.
<BSTOOLSATP_UNITTEST_STRUC_02B>-CHAR10 = 1.
<BSTOOLSATP_UNITTEST_STRUC_02B>-STRUC04 = 1.
<BSTOOLSATP_UNITTEST_STRUC_02B>-TABIX = 1.

ENDLOOP.

LOOP AT IT_BSTOOLSATP_UNITTEST_STRUC_02B INTO WA_BSTOOLSATP_UNITTEST_STRUC_02B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BSTOOLSATP_UNITTEST_STRUC_02B-LANGU, sy-vline,
  WA_BSTOOLSATP_UNITTEST_STRUC_02B-DYNNR, sy-vline,
  WA_BSTOOLSATP_UNITTEST_STRUC_02B-MANDT, sy-vline,
  WA_BSTOOLSATP_UNITTEST_STRUC_02B-DATLO, sy-vline,
  WA_BSTOOLSATP_UNITTEST_STRUC_02B-TIMLO, sy-vline,
  WA_BSTOOLSATP_UNITTEST_STRUC_02B-CONTROLLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BSTOOLSATP_UNITTEST_STRUC_02B 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_BSTOOLSATP_UNITTEST_STRUC_02B 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_BSTOOLSATP_UNITTEST_STRUC_02B INTO WA_BSTOOLSATP_UNITTEST_STRUC_02B.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BSTOOLSATP_UNITTEST_STRUC_02B-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSTOOLSATP_UNITTEST_STRUC_02B-LANGU.
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_BSTOOLSATP_UNITTEST_STRUC_02B_STR, 
CONTROLLER TYPE STRING,
TABIX TYPE STRING,
CHAR10 TYPE STRING,
STRUC04 TYPE STRING,
TABIX TYPE STRING,
LANGU TYPE STRING,
DYNNR TYPE STRING,
MANDT TYPE STRING,
DATLO TYPE STRING,
TIMLO TYPE STRING,
CONTROLLER TYPE STRING,
STRUC_UUID TYPE STRING,
ID TYPE STRING,
DB2NETGEN TYPE STRING,
DDPERCENT TYPE STRING,
CATRAW250 TYPE STRING,
TAB03 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BSTOOLSATP_UNITTEST_STRUC_02B_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_BSTOOLSATP_UNITTEST_STRUC_02B_STR-CONTROLLER sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-TABIX sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-CHAR10 sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-STRUC04 sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-TABIX sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-LANGU sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-DYNNR sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-MANDT sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-DATLO sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-TIMLO sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-CONTROLLER sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-STRUC_UUID sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-ID sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-DB2NETGEN sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-DDPERCENT sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-CATRAW250 sy-vline 
WA_BSTOOLSATP_UNITTEST_STRUC_02B_STR-TAB03 sy-vline      INTO ld_text SEPARATED BY SPACE.

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