ABAP Select data from SAP table IPPMGAPPROVAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPPMGAPPROVAL
*  INTO TABLE @DATA(IT_IPPMGAPPROVAL2).
*--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_IPPMGAPPROVAL INDEX 1 INTO DATA(WA_IPPMGAPPROVAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPPMGAPPROVAL>-MANDT = 1.
<IPPMGAPPROVAL>-PREPAYMENTAPPROVALUUID = 1.
<IPPMGAPPROVAL>-PREPAYMENTAGREEMENT = 1.
<IPPMGAPPROVAL>-PREPAYMENTAGREEMENTTYPE = 1.
<IPPMGAPPROVAL>-PREPAYMENTAGREEMENTCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPPMGAPPROVAL-PREPAYMENTAGRMTISPOSTED, sy-vline,
  WA_IPPMGAPPROVAL-PREPAYMENTPOSTINGISBLOCKED, sy-vline,
  WA_IPPMGAPPROVAL-FINALSETTLEMENTINDICATOR, sy-vline,
  WA_IPPMGAPPROVAL-ISINTERCOMPANYPAYMENT, sy-vline,
  WA_IPPMGAPPROVAL-CONDITIONAPPLICATION, sy-vline,
  WA_IPPMGAPPROVAL-COMPANYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPPMGAPPROVAL 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_IPPMGAPPROVAL 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_IPPMGAPPROVAL INTO WA_IPPMGAPPROVAL.


*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 ALPHA, internal->external for field COUNTERPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPPMGAPPROVAL-COUNTERPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPMGAPPROVAL-COUNTERPARTY.
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_IPPMGAPPROVAL_STR, 
MANDT TYPE STRING,
PREPAYMENTAPPROVALUUID TYPE STRING,
PREPAYMENTAGREEMENT TYPE STRING,
PREPAYMENTAGREEMENTTYPE TYPE STRING,
PREPAYMENTAGREEMENTCATEGORY TYPE STRING,
PREPAYMENTAGRMTISPOSTED TYPE STRING,
PREPAYMENTPOSTINGISBLOCKED TYPE STRING,
FINALSETTLEMENTINDICATOR TYPE STRING,
ISINTERCOMPANYPAYMENT TYPE STRING,
CONDITIONAPPLICATION TYPE STRING,
COMPANYCODE TYPE STRING,
COUNTERPARTY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPPMGAPPROVAL_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_IPPMGAPPROVAL_STR-MANDT sy-vline 
WA_IPPMGAPPROVAL_STR-PREPAYMENTAPPROVALUUID sy-vline 
WA_IPPMGAPPROVAL_STR-PREPAYMENTAGREEMENT sy-vline 
WA_IPPMGAPPROVAL_STR-PREPAYMENTAGREEMENTTYPE sy-vline 
WA_IPPMGAPPROVAL_STR-PREPAYMENTAGREEMENTCATEGORY sy-vline 
WA_IPPMGAPPROVAL_STR-PREPAYMENTAGRMTISPOSTED sy-vline 
WA_IPPMGAPPROVAL_STR-PREPAYMENTPOSTINGISBLOCKED sy-vline 
WA_IPPMGAPPROVAL_STR-FINALSETTLEMENTINDICATOR sy-vline 
WA_IPPMGAPPROVAL_STR-ISINTERCOMPANYPAYMENT sy-vline 
WA_IPPMGAPPROVAL_STR-CONDITIONAPPLICATION sy-vline 
WA_IPPMGAPPROVAL_STR-COMPANYCODE sy-vline 
WA_IPPMGAPPROVAL_STR-COUNTERPARTY sy-vline 
WA_IPPMGAPPROVAL_STR-CREATEDBYUSER sy-vline 
WA_IPPMGAPPROVAL_STR-CREATIONDATETIME sy-vline 
WA_IPPMGAPPROVAL_STR-LASTCHANGEDBYUSER sy-vline 
WA_IPPMGAPPROVAL_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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