ABAP Select data from SAP table /SMB/STR_FIELD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SMB/STR_FIELD 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 /SMB/STR_FIELD. 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 /SMB/STR_FIELD 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_/SMB/STR_FIELD TYPE STANDARD TABLE OF /SMB/STR_FIELD,
      WA_/SMB/STR_FIELD TYPE /SMB/STR_FIELD,
      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: </SMB/STR_FIELD> TYPE /SMB/STR_FIELD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SMB/STR_FIELD
  INTO TABLE IT_/SMB/STR_FIELD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SMB/STR_FIELD
*  INTO TABLE @DATA(IT_/SMB/STR_FIELD2).
*--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_/SMB/STR_FIELD INDEX 1 INTO DATA(WA_/SMB/STR_FIELD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SMB/STR_FIELD ASSIGNING </SMB/STR_FIELD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SMB/STR_FIELD>-FIELD = 1.
</SMB/STR_FIELD>-KEY_FLAG = 1.
</SMB/STR_FIELD>-POSITION = 1.
</SMB/STR_FIELD>-MANDATORY = 1.
</SMB/STR_FIELD>-ROLLNAME = 1.

ENDLOOP.

LOOP AT IT_/SMB/STR_FIELD INTO WA_/SMB/STR_FIELD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SMB/STR_FIELD-PREDEFINED_TYPE, sy-vline,
  WA_/SMB/STR_FIELD-DATATYPE, sy-vline,
  WA_/SMB/STR_FIELD-INTTYPE, sy-vline,
  WA_/SMB/STR_FIELD-OUTPUTLEN, sy-vline,
  WA_/SMB/STR_FIELD-LENG, sy-vline,
  WA_/SMB/STR_FIELD-DECIMALS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SMB/STR_FIELD 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_/SMB/STR_FIELD 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_/SMB/STR_FIELD INTO WA_/SMB/STR_FIELD.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_/SMB/STR_FIELD-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SMB/STR_FIELD-DATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field DDLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SMB/STR_FIELD-DDLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SMB/STR_FIELD-DDLANGUAGE.
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_/SMB/STR_FIELD_STR, 
FIELD TYPE STRING,
KEY_FLAG TYPE STRING,
POSITION TYPE STRING,
MANDATORY TYPE STRING,
ROLLNAME TYPE STRING,
PREDEFINED_TYPE TYPE STRING,
DATATYPE TYPE STRING,
INTTYPE TYPE STRING,
OUTPUTLEN TYPE STRING,
LENG TYPE STRING,
DECIMALS TYPE STRING,
CHECK_TABLE TYPE STRING,
CHECKTABLE_TYPE TYPE STRING,
DEL_CLASS TYPE STRING,
PRECFIELD TYPE STRING,
SHLP_ID TYPE STRING,
SHLP_SHLPTYPE TYPE STRING,
SHLP_INTDESCR TYPE STRING,
ISSIMPLE TYPE STRING,
HOTKEY TYPE STRING,
SELMTYPE TYPE STRING,
SELMETHOD TYPE STRING,
TEXTTAB TYPE STRING,
SELMEXIT TYPE STRING,
DIALOGTYPE TYPE STRING,
DDLANGUAGE TYPE STRING,
DDTEXT TYPE STRING,
DIALOGINFO TYPE STRING,
F4STATE TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
TITLE TYPE STRING,
HISTORY TYPE STRING,
HANDLE TYPE STRING,
AUTOSUGGEST TYPE STRING,
FUZZY_SEARCH TYPE STRING,
FUZZY_SIMILARITY TYPE STRING,
NOTNULL TYPE STRING,
SHLPORIGIN TYPE STRING,
LANGUFLAG TYPE STRING,
RELATION TYPE STRING,
CHECK_TABLE TYPE STRING,
CHK_CARDINALITY TYPE STRING,
FOR_CARDINALITY TYPE STRING,
ALLOW_SOURCE_WITHOUT_TARGET TYPE STRING,
FRKART TYPE STRING,
CLASFIELD TYPE STRING,
CLASVALUE TYPE STRING,
NOINHERIT TYPE STRING,
REL_MAPPING TYPE STRING,
DESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SMB/STR_FIELD_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_/SMB/STR_FIELD_STR-FIELD sy-vline 
WA_/SMB/STR_FIELD_STR-KEY_FLAG sy-vline 
WA_/SMB/STR_FIELD_STR-POSITION sy-vline 
WA_/SMB/STR_FIELD_STR-MANDATORY sy-vline 
WA_/SMB/STR_FIELD_STR-ROLLNAME sy-vline 
WA_/SMB/STR_FIELD_STR-PREDEFINED_TYPE sy-vline 
WA_/SMB/STR_FIELD_STR-DATATYPE sy-vline 
WA_/SMB/STR_FIELD_STR-INTTYPE sy-vline 
WA_/SMB/STR_FIELD_STR-OUTPUTLEN sy-vline 
WA_/SMB/STR_FIELD_STR-LENG sy-vline 
WA_/SMB/STR_FIELD_STR-DECIMALS sy-vline 
WA_/SMB/STR_FIELD_STR-CHECK_TABLE sy-vline 
WA_/SMB/STR_FIELD_STR-CHECKTABLE_TYPE sy-vline 
WA_/SMB/STR_FIELD_STR-DEL_CLASS sy-vline 
WA_/SMB/STR_FIELD_STR-PRECFIELD sy-vline 
WA_/SMB/STR_FIELD_STR-SHLP_ID sy-vline 
WA_/SMB/STR_FIELD_STR-SHLP_SHLPTYPE sy-vline 
WA_/SMB/STR_FIELD_STR-SHLP_INTDESCR sy-vline 
WA_/SMB/STR_FIELD_STR-ISSIMPLE sy-vline 
WA_/SMB/STR_FIELD_STR-HOTKEY sy-vline 
WA_/SMB/STR_FIELD_STR-SELMTYPE sy-vline 
WA_/SMB/STR_FIELD_STR-SELMETHOD sy-vline 
WA_/SMB/STR_FIELD_STR-TEXTTAB sy-vline 
WA_/SMB/STR_FIELD_STR-SELMEXIT sy-vline 
WA_/SMB/STR_FIELD_STR-DIALOGTYPE sy-vline 
WA_/SMB/STR_FIELD_STR-DDLANGUAGE sy-vline 
WA_/SMB/STR_FIELD_STR-DDTEXT sy-vline 
WA_/SMB/STR_FIELD_STR-DIALOGINFO sy-vline 
WA_/SMB/STR_FIELD_STR-F4STATE sy-vline 
WA_/SMB/STR_FIELD_STR-TABNAME sy-vline 
WA_/SMB/STR_FIELD_STR-FIELDNAME sy-vline 
WA_/SMB/STR_FIELD_STR-TITLE sy-vline 
WA_/SMB/STR_FIELD_STR-HISTORY sy-vline 
WA_/SMB/STR_FIELD_STR-HANDLE sy-vline 
WA_/SMB/STR_FIELD_STR-AUTOSUGGEST sy-vline 
WA_/SMB/STR_FIELD_STR-FUZZY_SEARCH sy-vline 
WA_/SMB/STR_FIELD_STR-FUZZY_SIMILARITY sy-vline 
WA_/SMB/STR_FIELD_STR-NOTNULL sy-vline 
WA_/SMB/STR_FIELD_STR-SHLPORIGIN sy-vline 
WA_/SMB/STR_FIELD_STR-LANGUFLAG sy-vline 
WA_/SMB/STR_FIELD_STR-RELATION sy-vline 
WA_/SMB/STR_FIELD_STR-CHECK_TABLE sy-vline 
WA_/SMB/STR_FIELD_STR-CHK_CARDINALITY sy-vline 
WA_/SMB/STR_FIELD_STR-FOR_CARDINALITY sy-vline 
WA_/SMB/STR_FIELD_STR-ALLOW_SOURCE_WITHOUT_TARGET sy-vline 
WA_/SMB/STR_FIELD_STR-FRKART sy-vline 
WA_/SMB/STR_FIELD_STR-CLASFIELD sy-vline 
WA_/SMB/STR_FIELD_STR-CLASVALUE sy-vline 
WA_/SMB/STR_FIELD_STR-NOINHERIT sy-vline 
WA_/SMB/STR_FIELD_STR-REL_MAPPING sy-vline 
WA_/SMB/STR_FIELD_STR-DESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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