ABAP Select data from SAP table J_3RF_REP_ATTRSEL_FULL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RF_REP_ATTRSEL_FULL 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 J_3RF_REP_ATTRSEL_FULL. 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 J_3RF_REP_ATTRSEL_FULL 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_J_3RF_REP_ATTRSEL_FULL TYPE STANDARD TABLE OF J_3RF_REP_ATTRSEL_FULL,
      WA_J_3RF_REP_ATTRSEL_FULL TYPE J_3RF_REP_ATTRSEL_FULL,
      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: <J_3RF_REP_ATTRSEL_FULL> TYPE J_3RF_REP_ATTRSEL_FULL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RF_REP_ATTRSEL_FULL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RF_REP_ATTRSEL_FULL
  INTO TABLE IT_J_3RF_REP_ATTRSEL_FULL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RF_REP_ATTRSEL_FULL
*  INTO TABLE @DATA(IT_J_3RF_REP_ATTRSEL_FULL2).
*--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_J_3RF_REP_ATTRSEL_FULL INDEX 1 INTO DATA(WA_J_3RF_REP_ATTRSEL_FULL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RF_REP_ATTRSEL_FULL ASSIGNING <J_3RF_REP_ATTRSEL_FULL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RF_REP_ATTRSEL_FULL>-LINENUM = 1.
<J_3RF_REP_ATTRSEL_FULL>-SEQNR = 1.
<J_3RF_REP_ATTRSEL_FULL>-ACTTYPE = 1.
<J_3RF_REP_ATTRSEL_FULL>-ACTIVITY = 1.
<J_3RF_REP_ATTRSEL_FULL>-SIGN = 1.

ENDLOOP.

LOOP AT IT_J_3RF_REP_ATTRSEL_FULL INTO WA_J_3RF_REP_ATTRSEL_FULL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RF_REP_ATTRSEL_FULL-TABNAME, sy-vline,
  WA_J_3RF_REP_ATTRSEL_FULL-FIELDNAME, sy-vline,
  WA_J_3RF_REP_ATTRSEL_FULL-DEBIT, sy-vline,
  WA_J_3RF_REP_ATTRSEL_FULL-CREDIT, sy-vline,
  WA_J_3RF_REP_ATTRSEL_FULL-SOPTION, sy-vline,
  WA_J_3RF_REP_ATTRSEL_FULL-OPTION1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RF_REP_ATTRSEL_FULL 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_J_3RF_REP_ATTRSEL_FULL 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_J_3RF_REP_ATTRSEL_FULL INTO WA_J_3RF_REP_ATTRSEL_FULL.


*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 GJAHR, internal->external for field GJAHR_LOW
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_REP_ATTRSEL_FULL-GJAHR_LOW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_REP_ATTRSEL_FULL-GJAHR_LOW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR_HIGH
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_REP_ATTRSEL_FULL-GJAHR_HIGH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_REP_ATTRSEL_FULL-GJAHR_HIGH.
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_J_3RF_REP_ATTRSEL_FULL_STR, 
LINENUM TYPE STRING,
SEQNR TYPE STRING,
ACTTYPE TYPE STRING,
ACTIVITY TYPE STRING,
SIGN TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
DEBIT TYPE STRING,
CREDIT TYPE STRING,
SOPTION TYPE STRING,
OPTION1 TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
RULE_ID TYPE STRING,
GJAHR_LOW TYPE STRING,
PERIOD_LOW TYPE STRING,
GJAHR_HIGH TYPE STRING,
PERIOD_HIGH TYPE STRING,
DP_KEY TYPE STRING,
FISL_FIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RF_REP_ATTRSEL_FULL_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_J_3RF_REP_ATTRSEL_FULL_STR-LINENUM sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-SEQNR sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-ACTTYPE sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-ACTIVITY sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-SIGN sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-TABNAME sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-FIELDNAME sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-DEBIT sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-CREDIT sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-SOPTION sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-OPTION1 sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-LOW sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-HIGH sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-RULE_ID sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-GJAHR_LOW sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-PERIOD_LOW sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-GJAHR_HIGH sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-PERIOD_HIGH sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-DP_KEY sy-vline 
WA_J_3RF_REP_ATTRSEL_FULL_STR-FISL_FIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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