ABAP Select data from SAP table J_1BLFDI_L2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1BLFDI_L2 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_1BLFDI_L2. 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_1BLFDI_L2 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_1BLFDI_L2 TYPE STANDARD TABLE OF J_1BLFDI_L2,
      WA_J_1BLFDI_L2 TYPE J_1BLFDI_L2,
      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_1BLFDI_L2> TYPE J_1BLFDI_L2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1BLFDI_L2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1BLFDI_L2
  INTO TABLE IT_J_1BLFDI_L2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1BLFDI_L2
*  INTO TABLE @DATA(IT_J_1BLFDI_L22).
*--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_1BLFDI_L2 INDEX 1 INTO DATA(WA_J_1BLFDI_L22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1BLFDI_L2 ASSIGNING <J_1BLFDI_L2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1BLFDI_L2>-SEQNR = 1.
<J_1BLFDI_L2>-CGC = 1.
<J_1BLFDI_L2>-RCODE = 1.
<J_1BLFDI_L2>-REC_TYPE = 1.
<J_1BLFDI_L2>-REC_CGC = 1.

ENDLOOP.

LOOP AT IT_J_1BLFDI_L2 INTO WA_J_1BLFDI_L2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1BLFDI_L2-NAME, sy-vline,
  WA_J_1BLFDI_L2-VENDOR, sy-vline,
  WA_J_1BLFDI_L2-01TRIBUTE, sy-vline,
  WA_J_1BLFDI_L2-01DEDUCTION, sy-vline,
  WA_J_1BLFDI_L2-01IMPRETIDO, sy-vline,
  WA_J_1BLFDI_L2-02TRIBUTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1BLFDI_L2 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_1BLFDI_L2 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_1BLFDI_L2 INTO WA_J_1BLFDI_L2.


*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 ALPHA, internal->external for field VENDOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BLFDI_L2-VENDOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BLFDI_L2-VENDOR.
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_1BLFDI_L2_STR, 
SEQNR TYPE STRING,
CGC TYPE STRING,
RCODE TYPE STRING,
REC_TYPE TYPE STRING,
REC_CGC TYPE STRING,
NAME TYPE STRING,
VENDOR TYPE STRING,
01TRIBUTE TYPE STRING,
01DEDUCTION TYPE STRING,
01IMPRETIDO TYPE STRING,
02TRIBUTE TYPE STRING,
02DEDUCTION TYPE STRING,
02IMPRETIDO TYPE STRING,
03TRIBUTE TYPE STRING,
03DEDUCTION TYPE STRING,
03IMPRETIDO TYPE STRING,
04TRIBUTE TYPE STRING,
04DEDUCTION TYPE STRING,
04IMPRETIDO TYPE STRING,
05TRIBUTE TYPE STRING,
05DEDUCTION TYPE STRING,
05IMPRETIDO TYPE STRING,
06TRIBUTE TYPE STRING,
06DEDUCTION TYPE STRING,
06IMPRETIDO TYPE STRING,
07TRIBUTE TYPE STRING,
07DEDUCTION TYPE STRING,
07IMPRETIDO TYPE STRING,
08TRIBUTE TYPE STRING,
08DEDUCTION TYPE STRING,
08IMPRETIDO TYPE STRING,
09TRIBUTE TYPE STRING,
09DEDUCTION TYPE STRING,
09IMPRETIDO TYPE STRING,
10TRIBUTE TYPE STRING,
10DEDUCTION TYPE STRING,
10IMPRETIDO TYPE STRING,
11TRIBUTE TYPE STRING,
11DEDUCTION TYPE STRING,
11IMPRETIDO TYPE STRING,
12TRIBUTE TYPE STRING,
12DEDUCTION TYPE STRING,
12IMPRETIDO TYPE STRING,
13TRIBUTE TYPE STRING,
13DEDUCTION TYPE STRING,
13IMPRETIDO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1BLFDI_L2_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_1BLFDI_L2_STR-SEQNR sy-vline 
WA_J_1BLFDI_L2_STR-CGC sy-vline 
WA_J_1BLFDI_L2_STR-RCODE sy-vline 
WA_J_1BLFDI_L2_STR-REC_TYPE sy-vline 
WA_J_1BLFDI_L2_STR-REC_CGC sy-vline 
WA_J_1BLFDI_L2_STR-NAME sy-vline 
WA_J_1BLFDI_L2_STR-VENDOR sy-vline 
WA_J_1BLFDI_L2_STR-01TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-01DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-01IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-02TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-02DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-02IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-03TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-03DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-03IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-04TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-04DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-04IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-05TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-05DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-05IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-06TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-06DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-06IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-07TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-07DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-07IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-08TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-08DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-08IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-09TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-09DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-09IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-10TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-10DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-10IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-11TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-11DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-11IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-12TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-12DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-12IMPRETIDO sy-vline 
WA_J_1BLFDI_L2_STR-13TRIBUTE sy-vline 
WA_J_1BLFDI_L2_STR-13DEDUCTION sy-vline 
WA_J_1BLFDI_L2_STR-13IMPRETIDO sy-vline      INTO ld_text SEPARATED BY SPACE.

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