ABAP Select data from SAP table EFG_STRN_SEL_PER_FCLASS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EFG_STRN_SEL_PER_FCLASS
*  INTO TABLE @DATA(IT_EFG_STRN_SEL_PER_FCLASS2).
*--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_EFG_STRN_SEL_PER_FCLASS INDEX 1 INTO DATA(WA_EFG_STRN_SEL_PER_FCLASS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EFG_STRN_SEL_PER_FCLASS>-FORMCLASS = 1.
<EFG_STRN_SEL_PER_FCLASS>-SELECTION = 1.
<EFG_STRN_SEL_PER_FCLASS>-RANGES = 1.
<EFG_STRN_SEL_PER_FCLASS>-RANGES1 = 1.
<EFG_STRN_SEL_PER_FCLASS>-RANGES2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EFG_STRN_SEL_PER_FCLASS-RANGES3, sy-vline,
  WA_EFG_STRN_SEL_PER_FCLASS-RANGES4, sy-vline,
  WA_EFG_STRN_SEL_PER_FCLASS-RANGES5, sy-vline,
  WA_EFG_STRN_SEL_PER_FCLASS-RANGES6, sy-vline,
  WA_EFG_STRN_SEL_PER_FCLASS-RANGES7, sy-vline,
  WA_EFG_STRN_SEL_PER_FCLASS-RANGES8, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EFG_STRN_SEL_PER_FCLASS 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_EFG_STRN_SEL_PER_FCLASS 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_EFG_STRN_SEL_PER_FCLASS INTO WA_EFG_STRN_SEL_PER_FCLASS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EFG_STRN_SEL_PER_FCLASS_STR, 
FORMCLASS TYPE STRING,
SELECTION TYPE STRING,
RANGES TYPE STRING,
RANGES1 TYPE STRING,
RANGES2 TYPE STRING,
RANGES3 TYPE STRING,
RANGES4 TYPE STRING,
RANGES5 TYPE STRING,
RANGES6 TYPE STRING,
RANGES7 TYPE STRING,
RANGES8 TYPE STRING,
RANGES9 TYPE STRING,
HEADER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EFG_STRN_SEL_PER_FCLASS_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_EFG_STRN_SEL_PER_FCLASS_STR-FORMCLASS sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-SELECTION sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES1 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES2 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES3 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES4 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES5 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES6 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES7 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES8 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-RANGES9 sy-vline 
WA_EFG_STRN_SEL_PER_FCLASS_STR-HEADER sy-vline      INTO ld_text SEPARATED BY SPACE.

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