ABAP Select data from SAP table J_7LE17_F4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LE17_F4 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_7LE17_F4. 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_7LE17_F4 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_7LE17_F4 TYPE STANDARD TABLE OF J_7LE17_F4,
      WA_J_7LE17_F4 TYPE J_7LE17_F4,
      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_7LE17_F4> TYPE J_7LE17_F4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LE17_F4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LE17_F4
  INTO TABLE IT_J_7LE17_F4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LE17_F4
*  INTO TABLE @DATA(IT_J_7LE17_F42).
*--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_7LE17_F4 INDEX 1 INTO DATA(WA_J_7LE17_F42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LE17_F4 ASSIGNING <J_7LE17_F4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LE17_F4>-MANDT = 1.
<J_7LE17_F4>-ENTNR = 1.
<J_7LE17_F4>-LAND1 = 1.
<J_7LE17_F4>-PFORMEL = 1.
<J_7LE17_F4>-PFORMKTX = 1.

ENDLOOP.

LOOP AT IT_J_7LE17_F4 INTO WA_J_7LE17_F4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LE17_F4-ENTNA, sy-vline,
  WA_J_7LE17_F4-FBPFORMEL, sy-vline,
  WA_J_7LE17_F4-PFORMVW, sy-vline,
  WA_J_7LE17_F4-RUNDG, sy-vline,
  WA_J_7LE17_F4-POSNVW, sy-vline,
  WA_J_7LE17_F4-POSARVW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LE17_F4 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_7LE17_F4 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_7LE17_F4 INTO WA_J_7LE17_F4.


*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 ENTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LE17_F4-ENTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LE17_F4-ENTNR.
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_7LE17_F4_STR, 
MANDT TYPE STRING,
ENTNR TYPE STRING,
LAND1 TYPE STRING,
PFORMEL TYPE STRING,
PFORMKTX TYPE STRING,
ENTNA TYPE STRING,
FBPFORMEL TYPE STRING,
PFORMVW TYPE STRING,
RUNDG TYPE STRING,
POSNVW TYPE STRING,
POSARVW TYPE STRING,
POSAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LE17_F4_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_7LE17_F4_STR-MANDT sy-vline 
WA_J_7LE17_F4_STR-ENTNR sy-vline 
WA_J_7LE17_F4_STR-LAND1 sy-vline 
WA_J_7LE17_F4_STR-PFORMEL sy-vline 
WA_J_7LE17_F4_STR-PFORMKTX sy-vline 
WA_J_7LE17_F4_STR-ENTNA sy-vline 
WA_J_7LE17_F4_STR-FBPFORMEL sy-vline 
WA_J_7LE17_F4_STR-PFORMVW sy-vline 
WA_J_7LE17_F4_STR-RUNDG sy-vline 
WA_J_7LE17_F4_STR-POSNVW sy-vline 
WA_J_7LE17_F4_STR-POSARVW sy-vline 
WA_J_7LE17_F4_STR-POSAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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