ABAP Select data from SAP table J_BS_LINE_920 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_BS_LINE_920 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_BS_LINE_920. 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_BS_LINE_920 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_BS_LINE_920 TYPE STANDARD TABLE OF J_BS_LINE_920,
      WA_J_BS_LINE_920 TYPE J_BS_LINE_920,
      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_BS_LINE_920> TYPE J_BS_LINE_920.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_BS_LINE_920.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_BS_LINE_920
  INTO TABLE IT_J_BS_LINE_920.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_BS_LINE_920
*  INTO TABLE @DATA(IT_J_BS_LINE_9202).
*--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_BS_LINE_920 INDEX 1 INTO DATA(WA_J_BS_LINE_9202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_BS_LINE_920 ASSIGNING <J_BS_LINE_920>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_BS_LINE_920>-9201BBEG = 1.
<J_BS_LINE_920>-9201TBEG = 1.
<J_BS_LINE_920>-9201TEND = 1.
<J_BS_LINE_920>-9201BEND = 1.
<J_BS_LINE_920>-9201NAME = 1.

ENDLOOP.

LOOP AT IT_J_BS_LINE_920 INTO WA_J_BS_LINE_920.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_BS_LINE_920-9202BBEG, sy-vline,
  WA_J_BS_LINE_920-9202TBEG, sy-vline,
  WA_J_BS_LINE_920-9202TEND, sy-vline,
  WA_J_BS_LINE_920-9202BEND, sy-vline,
  WA_J_BS_LINE_920-9202NAME, sy-vline,
  WA_J_BS_LINE_920-9203BBEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_BS_LINE_920 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_BS_LINE_920 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_BS_LINE_920 INTO WA_J_BS_LINE_920.


*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_J_BS_LINE_920_STR, 
9201BBEG TYPE STRING,
9201TBEG TYPE STRING,
9201TEND TYPE STRING,
9201BEND TYPE STRING,
9201NAME TYPE STRING,
9202BBEG TYPE STRING,
9202TBEG TYPE STRING,
9202TEND TYPE STRING,
9202BEND TYPE STRING,
9202NAME TYPE STRING,
9203BBEG TYPE STRING,
9203TBEG TYPE STRING,
9203TEND TYPE STRING,
9203BEND TYPE STRING,
9203NAME TYPE STRING,
9204BBEG TYPE STRING,
9204TBEG TYPE STRING,
9204TEND TYPE STRING,
9204BEND TYPE STRING,
9204NAME TYPE STRING,
9205BBEG TYPE STRING,
9205TBEG TYPE STRING,
9205TEND TYPE STRING,
9205BEND TYPE STRING,
9205NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_BS_LINE_920_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_BS_LINE_920_STR-9201BBEG sy-vline 
WA_J_BS_LINE_920_STR-9201TBEG sy-vline 
WA_J_BS_LINE_920_STR-9201TEND sy-vline 
WA_J_BS_LINE_920_STR-9201BEND sy-vline 
WA_J_BS_LINE_920_STR-9201NAME sy-vline 
WA_J_BS_LINE_920_STR-9202BBEG sy-vline 
WA_J_BS_LINE_920_STR-9202TBEG sy-vline 
WA_J_BS_LINE_920_STR-9202TEND sy-vline 
WA_J_BS_LINE_920_STR-9202BEND sy-vline 
WA_J_BS_LINE_920_STR-9202NAME sy-vline 
WA_J_BS_LINE_920_STR-9203BBEG sy-vline 
WA_J_BS_LINE_920_STR-9203TBEG sy-vline 
WA_J_BS_LINE_920_STR-9203TEND sy-vline 
WA_J_BS_LINE_920_STR-9203BEND sy-vline 
WA_J_BS_LINE_920_STR-9203NAME sy-vline 
WA_J_BS_LINE_920_STR-9204BBEG sy-vline 
WA_J_BS_LINE_920_STR-9204TBEG sy-vline 
WA_J_BS_LINE_920_STR-9204TEND sy-vline 
WA_J_BS_LINE_920_STR-9204BEND sy-vline 
WA_J_BS_LINE_920_STR-9204NAME sy-vline 
WA_J_BS_LINE_920_STR-9205BBEG sy-vline 
WA_J_BS_LINE_920_STR-9205TBEG sy-vline 
WA_J_BS_LINE_920_STR-9205TEND sy-vline 
WA_J_BS_LINE_920_STR-9205BEND sy-vline 
WA_J_BS_LINE_920_STR-9205NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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