ABAP Select data from SAP table ISPREPAYMENTAPPROVALTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPREPAYMENTAPPROVALTP
*  INTO TABLE @DATA(IT_ISPREPAYMENTAPPROVALTP2).
*--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_ISPREPAYMENTAPPROVALTP INDEX 1 INTO DATA(WA_ISPREPAYMENTAPPROVALTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISPREPAYMENTAPPROVALTP>-KEY = 1.
<ISPREPAYMENTAPPROVALTP>-PARENT_KEY = 1.
<ISPREPAYMENTAPPROVALTP>-ROOT_KEY = 1.
<ISPREPAYMENTAPPROVALTP>-PREPAYMENTAGREEMENT = 1.
<ISPREPAYMENTAPPROVALTP>-PREPAYMENTAGREEMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPREPAYMENTAPPROVALTP-PREPAYMENTAGREEMENTCATEGORY, sy-vline,
  WA_ISPREPAYMENTAPPROVALTP-PREPAYMENTAGRMTISPOSTED, sy-vline,
  WA_ISPREPAYMENTAPPROVALTP-CREATEDBYUSER, sy-vline,
  WA_ISPREPAYMENTAPPROVALTP-CREATIONDATETIME, sy-vline,
  WA_ISPREPAYMENTAPPROVALTP-LASTCHANGEDBYUSER, sy-vline,
  WA_ISPREPAYMENTAPPROVALTP-LASTCHANGEDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPREPAYMENTAPPROVALTP 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_ISPREPAYMENTAPPROVALTP 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_ISPREPAYMENTAPPROVALTP INTO WA_ISPREPAYMENTAPPROVALTP.


*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_ISPREPAYMENTAPPROVALTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PREPAYMENTAGREEMENT TYPE STRING,
PREPAYMENTAGREEMENTTYPE TYPE STRING,
PREPAYMENTAGREEMENTCATEGORY TYPE STRING,
PREPAYMENTAGRMTISPOSTED 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,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPREPAYMENTAPPROVALTP_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_ISPREPAYMENTAPPROVALTP_STR-KEY sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-PARENT_KEY sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-ROOT_KEY sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-PREPAYMENTAGREEMENT sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-PREPAYMENTAGREEMENTTYPE sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-PREPAYMENTAGREEMENTCATEGORY sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-PREPAYMENTAGRMTISPOSTED sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-CREATEDBYUSER sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-CREATIONDATETIME sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-LASTCHANGEDATETIME sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-ACTIVEUUID sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-HASACTIVEENTITY sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISPREPAYMENTAPPROVALTP_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISPREPAYMENTAPPROVALTP_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.