ABAP Select data from SAP table T510Y into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T510Y 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 T510Y. 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 T510Y 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_T510Y TYPE STANDARD TABLE OF T510Y,
      WA_T510Y TYPE T510Y,
      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: <T510Y> TYPE T510Y.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T510Y.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T510Y
  INTO TABLE IT_T510Y.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T510Y
*  INTO TABLE @DATA(IT_T510Y2).
*--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_T510Y INDEX 1 INTO DATA(WA_T510Y2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T510Y ASSIGNING <T510Y>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T510Y>-MANDT = 1.
<T510Y>-MODIF = 1.
<T510Y>-SEQNO = 1.
<T510Y>-ENDDA = 1.
<T510Y>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_T510Y INTO WA_T510Y.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T510Y-DATUM, sy-vline,
  WA_T510Y-WTAGE, sy-vline,
  WA_T510Y-DEFFV, sy-vline,
  WA_T510Y-FKLAV, sy-vline,
  WA_T510Y-DEFFK, sy-vline,
  WA_T510Y-FKLAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T510Y 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_T510Y 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_T510Y INTO WA_T510Y.


*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_T510Y_STR, 
MANDT TYPE STRING,
MODIF TYPE STRING,
SEQNO TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
DATUM TYPE STRING,
WTAGE TYPE STRING,
DEFFV TYPE STRING,
FKLAV TYPE STRING,
DEFFK TYPE STRING,
FKLAS TYPE STRING,
UZVON TYPE STRING,
UZBIS TYPE STRING,
KENN1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T510Y_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_T510Y_STR-MANDT sy-vline 
WA_T510Y_STR-MODIF sy-vline 
WA_T510Y_STR-SEQNO sy-vline 
WA_T510Y_STR-ENDDA sy-vline 
WA_T510Y_STR-BEGDA sy-vline 
WA_T510Y_STR-DATUM sy-vline 
WA_T510Y_STR-WTAGE sy-vline 
WA_T510Y_STR-DEFFV sy-vline 
WA_T510Y_STR-FKLAV sy-vline 
WA_T510Y_STR-DEFFK sy-vline 
WA_T510Y_STR-FKLAS sy-vline 
WA_T510Y_STR-UZVON sy-vline 
WA_T510Y_STR-UZBIS sy-vline 
WA_T510Y_STR-KENN1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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