ABAP Select data from SAP table ESH_U_APMITEMOBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_U_APMITEMOBJ
*  INTO TABLE @DATA(IT_ESH_U_APMITEMOBJ2).
*--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_ESH_U_APMITEMOBJ INDEX 1 INTO DATA(WA_ESH_U_APMITEMOBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_U_APMITEMOBJ>-MANDT = 1.
<ESH_U_APMITEMOBJ>-CLEARINGAREA = 1.
<ESH_U_APMITEMOBJ>-END2ENDID = 1.
<ESH_U_APMITEMOBJ>-EXTERNALINBOUNDREFERENCE = 1.
<ESH_U_APMITEMOBJ>-GUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_U_APMITEMOBJ-OTHERITEMREFERENCE, sy-vline,
  WA_ESH_U_APMITEMOBJ-PAYMENTITEMDATE, sy-vline,
  WA_ESH_U_APMITEMOBJ-PAYMENTITEMKIND, sy-vline,
  WA_ESH_U_APMITEMOBJ-PAYMENTITEMNUMBER, sy-vline,
  WA_ESH_U_APMITEMOBJ-TRANSACTIONAMOUNT, sy-vline,
  WA_ESH_U_APMITEMOBJ-TRANSACTIONCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_U_APMITEMOBJ 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_ESH_U_APMITEMOBJ 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_ESH_U_APMITEMOBJ INTO WA_ESH_U_APMITEMOBJ.


*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_ESH_U_APMITEMOBJ_STR, 
MANDT TYPE STRING,
CLEARINGAREA TYPE STRING,
END2ENDID TYPE STRING,
EXTERNALINBOUNDREFERENCE TYPE STRING,
GUID TYPE STRING,
OTHERITEMREFERENCE TYPE STRING,
PAYMENTITEMDATE TYPE STRING,
PAYMENTITEMKIND TYPE STRING,
PAYMENTITEMNUMBER TYPE STRING,
TRANSACTIONAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
TRANSACTIONTYPECODE TYPE STRING,
TRANSACTIONTYPEDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_U_APMITEMOBJ_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_ESH_U_APMITEMOBJ_STR-MANDT sy-vline 
WA_ESH_U_APMITEMOBJ_STR-CLEARINGAREA sy-vline 
WA_ESH_U_APMITEMOBJ_STR-END2ENDID sy-vline 
WA_ESH_U_APMITEMOBJ_STR-EXTERNALINBOUNDREFERENCE sy-vline 
WA_ESH_U_APMITEMOBJ_STR-GUID sy-vline 
WA_ESH_U_APMITEMOBJ_STR-OTHERITEMREFERENCE sy-vline 
WA_ESH_U_APMITEMOBJ_STR-PAYMENTITEMDATE sy-vline 
WA_ESH_U_APMITEMOBJ_STR-PAYMENTITEMKIND sy-vline 
WA_ESH_U_APMITEMOBJ_STR-PAYMENTITEMNUMBER sy-vline 
WA_ESH_U_APMITEMOBJ_STR-TRANSACTIONAMOUNT sy-vline 
WA_ESH_U_APMITEMOBJ_STR-TRANSACTIONCURRENCY sy-vline 
WA_ESH_U_APMITEMOBJ_STR-TRANSACTIONTYPECODE sy-vline 
WA_ESH_U_APMITEMOBJ_STR-TRANSACTIONTYPEDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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