ABAP Select data from SAP table ISPREPAYMENTAGRMTCOMMLREFTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPREPAYMENTAGRMTCOMMLREFTP
*  INTO TABLE @DATA(IT_ISPREPAYMENTAGRMTCOMMLREFTP2).
*--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_ISPREPAYMENTAGRMTCOMMLREFTP INDEX 1 INTO DATA(WA_ISPREPAYMENTAGRMTCOMMLREFTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISPREPAYMENTAGRMTCOMMLREFTP>-KEY = 1.
<ISPREPAYMENTAGRMTCOMMLREFTP>-PARENT_KEY = 1.
<ISPREPAYMENTAGRMTCOMMLREFTP>-ROOT_KEY = 1.
<ISPREPAYMENTAGRMTCOMMLREFTP>-PREPAYMENTCOMMLREFTYPE = 1.
<ISPREPAYMENTAGRMTCOMMLREFTP>-PREPAYMENTCOMMERCIALREFERENCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTCOMMLREFNAME, sy-vline,
  WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTREFCONTACTPERSONNAME, sy-vline,
  WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTCOMMLREFCURJOBTITLE, sy-vline,
  WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTCOMMLREFSEGMENT, sy-vline,
  WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTCOMMLREFINDSTRYFUNC, sy-vline,
  WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTCOMMLREFCITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPREPAYMENTAGRMTCOMMLREFTP 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_ISPREPAYMENTAGRMTCOMMLREFTP 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_ISPREPAYMENTAGRMTCOMMLREFTP INTO WA_ISPREPAYMENTAGRMTCOMMLREFTP.


*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.

*Conversion exit SXIDN, internal->external for field PREPAYMENTCOMMLREFCONTEMAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTCOMMLREFCONTEMAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPREPAYMENTAGRMTCOMMLREFTP-PREPAYMENTCOMMLREFCONTEMAIL.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISPREPAYMENTAGRMTCOMMLREFTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PREPAYMENTCOMMLREFTYPE TYPE STRING,
PREPAYMENTCOMMERCIALREFERENCE TYPE STRING,
PREPAYMENTCOMMLREFNAME TYPE STRING,
PREPAYMENTREFCONTACTPERSONNAME TYPE STRING,
PREPAYMENTCOMMLREFCURJOBTITLE TYPE STRING,
PREPAYMENTCOMMLREFSEGMENT TYPE STRING,
PREPAYMENTCOMMLREFINDSTRYFUNC TYPE STRING,
PREPAYMENTCOMMLREFCITY TYPE STRING,
PREPAYMENTCOMMLREFCONTNUMBER TYPE STRING,
PREPAYMENTCOMMLREFCONTEMAIL TYPE STRING,
PREPAYMENTCOMMLREFDIVISION TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
PPMGAG_DUMMY TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPREPAYMENTAGRMTCOMMLREFTP_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_ISPREPAYMENTAGRMTCOMMLREFTP_STR-KEY sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PARENT_KEY sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-ROOT_KEY sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFTYPE sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMERCIALREFERENCE sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFNAME sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTREFCONTACTPERSONNAME sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFCURJOBTITLE sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFSEGMENT sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFINDSTRYFUNC sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFCITY sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFCONTNUMBER sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFCONTEMAIL sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PREPAYMENTCOMMLREFDIVISION sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-CREATEDBYUSER sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-CREATIONDATETIME sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-LASTCHANGEDATETIME sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-ACTIVEUUID sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-HASACTIVEENTITY sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-PPMGAG_DUMMY sy-vline 
WA_ISPREPAYMENTAGRMTCOMMLREFTP_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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