ABAP Select data from SAP table E519D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E519D 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 E519D. 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 E519D 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_E519D TYPE STANDARD TABLE OF E519D,
      WA_E519D TYPE E519D,
      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: <E519D> TYPE E519D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E519D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E519D
  INTO TABLE IT_E519D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E519D
*  INTO TABLE @DATA(IT_E519D2).
*--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_E519D INDEX 1 INTO DATA(WA_E519D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E519D ASSIGNING <E519D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E519D>-BTRGRU = 1.
<E519D>-WAERS = 1.
<E519D>-LFDNR = 1.
<E519D>-ABBETR = 1.
<E519D>-BISBETR = 1.

ENDLOOP.

LOOP AT IT_E519D INTO WA_E519D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E519D-VERREG, sy-vline,
  WA_E519D-DIFBU, sy-vline,
  WA_E519D-DIFBO, sy-vline,
  WA_E519D-DIFPU, sy-vline,
  WA_E519D-DIFPO, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_E519D 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_E519D 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_E519D INTO WA_E519D.


*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_E519D_STR, 
BTRGRU TYPE STRING,
WAERS TYPE STRING,
LFDNR TYPE STRING,
ABBETR TYPE STRING,
BISBETR TYPE STRING,
VERREG TYPE STRING,
DIFBU TYPE STRING,
DIFBO TYPE STRING,
DIFPU TYPE STRING,
DIFPO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E519D_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_E519D_STR-BTRGRU sy-vline 
WA_E519D_STR-WAERS sy-vline 
WA_E519D_STR-LFDNR sy-vline 
WA_E519D_STR-ABBETR sy-vline 
WA_E519D_STR-BISBETR sy-vline 
WA_E519D_STR-VERREG sy-vline 
WA_E519D_STR-DIFBU sy-vline 
WA_E519D_STR-DIFBO sy-vline 
WA_E519D_STR-DIFPU sy-vline 
WA_E519D_STR-DIFPO sy-vline      INTO ld_text SEPARATED BY SPACE.

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