ABAP Select data from SAP table /PF1/V_ESH_RELI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PF1/V_ESH_RELI 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 /PF1/V_ESH_RELI. 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 /PF1/V_ESH_RELI 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_/PF1/V_ESH_RELI TYPE STANDARD TABLE OF /PF1/V_ESH_RELI,
      WA_/PF1/V_ESH_RELI TYPE /PF1/V_ESH_RELI,
      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: </PF1/V_ESH_RELI> TYPE /PF1/V_ESH_RELI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PF1/V_ESH_RELI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PF1/V_ESH_RELI
  INTO TABLE IT_/PF1/V_ESH_RELI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PF1/V_ESH_RELI
*  INTO TABLE @DATA(IT_/PF1/V_ESH_RELI2).
*--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_/PF1/V_ESH_RELI INDEX 1 INTO DATA(WA_/PF1/V_ESH_RELI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PF1/V_ESH_RELI ASSIGNING </PF1/V_ESH_RELI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PF1/V_ESH_RELI>-MANDT = 1.
</PF1/V_ESH_RELI>-GUID = 1.
</PF1/V_ESH_RELI>-CLEARINGAREA = 1.
</PF1/V_ESH_RELI>-PAYMENTITEMDATE = 1.
</PF1/V_ESH_RELI>-PAYMENTITEMNUMBER = 1.

ENDLOOP.

LOOP AT IT_/PF1/V_ESH_RELI INTO WA_/PF1/V_ESH_RELI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PF1/V_ESH_RELI-OTHERITEMREFERENCE, sy-vline,
  WA_/PF1/V_ESH_RELI-EXTERNALINBOUNDREFERENCE, sy-vline,
  WA_/PF1/V_ESH_RELI-EXTERNALOUTBOUNDREFERENCE, sy-vline,
  WA_/PF1/V_ESH_RELI-END2ENDID, sy-vline,
  WA_/PF1/V_ESH_RELI-TRANSACTIONTYPECODE, sy-vline,
  WA_/PF1/V_ESH_RELI-TRANSACTIONTYPEDESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PF1/V_ESH_RELI 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_/PF1/V_ESH_RELI 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_/PF1/V_ESH_RELI INTO WA_/PF1/V_ESH_RELI.


*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_/PF1/V_ESH_RELI_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
CLEARINGAREA TYPE STRING,
PAYMENTITEMDATE TYPE STRING,
PAYMENTITEMNUMBER TYPE STRING,
OTHERITEMREFERENCE TYPE STRING,
EXTERNALINBOUNDREFERENCE TYPE STRING,
EXTERNALOUTBOUNDREFERENCE TYPE STRING,
END2ENDID TYPE STRING,
TRANSACTIONTYPECODE TYPE STRING,
TRANSACTIONTYPEDESCRIPTION TYPE STRING,
PAYMENTITEMKIND TYPE STRING,
TRANSACTIONAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PF1/V_ESH_RELI_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_/PF1/V_ESH_RELI_STR-MANDT sy-vline 
WA_/PF1/V_ESH_RELI_STR-GUID sy-vline 
WA_/PF1/V_ESH_RELI_STR-CLEARINGAREA sy-vline 
WA_/PF1/V_ESH_RELI_STR-PAYMENTITEMDATE sy-vline 
WA_/PF1/V_ESH_RELI_STR-PAYMENTITEMNUMBER sy-vline 
WA_/PF1/V_ESH_RELI_STR-OTHERITEMREFERENCE sy-vline 
WA_/PF1/V_ESH_RELI_STR-EXTERNALINBOUNDREFERENCE sy-vline 
WA_/PF1/V_ESH_RELI_STR-EXTERNALOUTBOUNDREFERENCE sy-vline 
WA_/PF1/V_ESH_RELI_STR-END2ENDID sy-vline 
WA_/PF1/V_ESH_RELI_STR-TRANSACTIONTYPECODE sy-vline 
WA_/PF1/V_ESH_RELI_STR-TRANSACTIONTYPEDESCRIPTION sy-vline 
WA_/PF1/V_ESH_RELI_STR-PAYMENTITEMKIND sy-vline 
WA_/PF1/V_ESH_RELI_STR-TRANSACTIONAMOUNT sy-vline 
WA_/PF1/V_ESH_RELI_STR-TRANSACTIONCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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