ABAP Select data from SAP table J_BS_LINE_784 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_784 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_784. 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_784 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_784 TYPE STANDARD TABLE OF J_BS_LINE_784,
      WA_J_BS_LINE_784 TYPE J_BS_LINE_784,
      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_784> TYPE J_BS_LINE_784.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_BS_LINE_784.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_BS_LINE_784
  INTO TABLE IT_J_BS_LINE_784.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_BS_LINE_784
*  INTO TABLE @DATA(IT_J_BS_LINE_7842).
*--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_784 INDEX 1 INTO DATA(WA_J_BS_LINE_7842).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_BS_LINE_784 ASSIGNING <J_BS_LINE_784>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_BS_LINE_784>-7841BBEG = 1.
<J_BS_LINE_784>-7841BEND = 1.
<J_BS_LINE_784>-7841NAME = 1.
<J_BS_LINE_784>-7842BBEG = 1.
<J_BS_LINE_784>-7842BEND = 1.

ENDLOOP.

LOOP AT IT_J_BS_LINE_784 INTO WA_J_BS_LINE_784.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_BS_LINE_784-7842NAME, sy-vline,
  WA_J_BS_LINE_784-7843BBEG, sy-vline,
  WA_J_BS_LINE_784-7843BEND, sy-vline,
  WA_J_BS_LINE_784-7843NAME, sy-vline,
  WA_J_BS_LINE_784-7844BBEG, sy-vline,
  WA_J_BS_LINE_784-7844BEND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_BS_LINE_784 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_784 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_784 INTO WA_J_BS_LINE_784.


*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_784_STR, 
7841BBEG TYPE STRING,
7841BEND TYPE STRING,
7841NAME TYPE STRING,
7842BBEG TYPE STRING,
7842BEND TYPE STRING,
7842NAME TYPE STRING,
7843BBEG TYPE STRING,
7843BEND TYPE STRING,
7843NAME TYPE STRING,
7844BBEG TYPE STRING,
7844BEND TYPE STRING,
7844NAME TYPE STRING,
7845BBEG TYPE STRING,
7845BEND TYPE STRING,
7845NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_BS_LINE_784_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_784_STR-7841BBEG sy-vline 
WA_J_BS_LINE_784_STR-7841BEND sy-vline 
WA_J_BS_LINE_784_STR-7841NAME sy-vline 
WA_J_BS_LINE_784_STR-7842BBEG sy-vline 
WA_J_BS_LINE_784_STR-7842BEND sy-vline 
WA_J_BS_LINE_784_STR-7842NAME sy-vline 
WA_J_BS_LINE_784_STR-7843BBEG sy-vline 
WA_J_BS_LINE_784_STR-7843BEND sy-vline 
WA_J_BS_LINE_784_STR-7843NAME sy-vline 
WA_J_BS_LINE_784_STR-7844BBEG sy-vline 
WA_J_BS_LINE_784_STR-7844BEND sy-vline 
WA_J_BS_LINE_784_STR-7844NAME sy-vline 
WA_J_BS_LINE_784_STR-7845BBEG sy-vline 
WA_J_BS_LINE_784_STR-7845BEND sy-vline 
WA_J_BS_LINE_784_STR-7845NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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