ABAP Select data from SAP table ICPACASSIGNTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICPACASSIGNTP
*  INTO TABLE @DATA(IT_ICPACASSIGNTP2).
*--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_ICPACASSIGNTP INDEX 1 INTO DATA(WA_ICPACASSIGNTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICPACASSIGNTP>-MANDT = 1.
<ICPACASSIGNTP>-CHRGPLANACCOUNTASSIGNMENTUUID = 1.
<ICPACASSIGNTP>-CREATEDBYUSER = 1.
<ICPACASSIGNTP>-CREATIONDATETIME = 1.
<ICPACASSIGNTP>-LASTCHANGEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICPACASSIGNTP-LASTCHANGEDATETIME, sy-vline,
  WA_ICPACASSIGNTP-CHARGEPLANASSIGNMENTUUID, sy-vline,
  WA_ICPACASSIGNTP-SUBSCRPNPRODSPECUUID, sy-vline,
  WA_ICPACASSIGNTP-CHARGEPLANACCOUNTASSIGNMENTID, sy-vline,
  WA_ICPACASSIGNTP-CHRGPLNACCTASSGMTDESCRIPTION, sy-vline,
  WA_ICPACASSIGNTP-CHRGPLANACCOUNTASSIGNMENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICPACASSIGNTP 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_ICPACASSIGNTP 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_ICPACASSIGNTP INTO WA_ICPACASSIGNTP.


*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_ICPACASSIGNTP_STR, 
MANDT TYPE STRING,
CHRGPLANACCOUNTASSIGNMENTUUID TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CHARGEPLANASSIGNMENTUUID TYPE STRING,
SUBSCRPNPRODSPECUUID TYPE STRING,
CHARGEPLANACCOUNTASSIGNMENTID TYPE STRING,
CHRGPLNACCTASSGMTDESCRIPTION TYPE STRING,
CHRGPLANACCOUNTASSIGNMENTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICPACASSIGNTP_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_ICPACASSIGNTP_STR-MANDT sy-vline 
WA_ICPACASSIGNTP_STR-CHRGPLANACCOUNTASSIGNMENTUUID sy-vline 
WA_ICPACASSIGNTP_STR-CREATEDBYUSER sy-vline 
WA_ICPACASSIGNTP_STR-CREATIONDATETIME sy-vline 
WA_ICPACASSIGNTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ICPACASSIGNTP_STR-LASTCHANGEDATETIME sy-vline 
WA_ICPACASSIGNTP_STR-CHARGEPLANASSIGNMENTUUID sy-vline 
WA_ICPACASSIGNTP_STR-SUBSCRPNPRODSPECUUID sy-vline 
WA_ICPACASSIGNTP_STR-CHARGEPLANACCOUNTASSIGNMENTID sy-vline 
WA_ICPACASSIGNTP_STR-CHRGPLNACCTASSGMTDESCRIPTION sy-vline 
WA_ICPACASSIGNTP_STR-CHRGPLANACCOUNTASSIGNMENTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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