ABAP Select data from SAP table PPOMAINTHDRDRAFT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPOMAINTHDRDRAFT
*  INTO TABLE @DATA(IT_PPOMAINTHDRDRAFT2).
*--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_PPOMAINTHDRDRAFT INDEX 1 INTO DATA(WA_PPOMAINTHDRDRAFT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPOMAINTHDRDRAFT>-MANDT = 1.
<PPOMAINTHDRDRAFT>-PURCHASEORDERHEADERDRAFTUUID = 1.
<PPOMAINTHDRDRAFT>-PURCHASEORDER = 1.
<PPOMAINTHDRDRAFT>-PURCHASINGDOCUMENTCATEGORY = 1.
<PPOMAINTHDRDRAFT>-PURCHASINGDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPOMAINTHDRDRAFT-COMPANYCODE, sy-vline,
  WA_PPOMAINTHDRDRAFT-PURCHASINGORGANIZATION, sy-vline,
  WA_PPOMAINTHDRDRAFT-PURCHASINGGROUP, sy-vline,
  WA_PPOMAINTHDRDRAFT-SUPPLIER, sy-vline,
  WA_PPOMAINTHDRDRAFT-CURRENCY, sy-vline,
  WA_PPOMAINTHDRDRAFT-PAYMENTTERMS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPOMAINTHDRDRAFT 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_PPOMAINTHDRDRAFT 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_PPOMAINTHDRDRAFT INTO WA_PPOMAINTHDRDRAFT.


*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 PURCHASEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPOMAINTHDRDRAFT-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOMAINTHDRDRAFT-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPOMAINTHDRDRAFT-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOMAINTHDRDRAFT-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INVOICINGPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPOMAINTHDRDRAFT-INVOICINGPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOMAINTHDRDRAFT-INVOICINGPARTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDRESSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPOMAINTHDRDRAFT-ADDRESSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOMAINTHDRDRAFT-ADDRESSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field ADDRESSCORRESPONDENCELANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PPOMAINTHDRDRAFT-ADDRESSCORRESPONDENCELANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOMAINTHDRDRAFT-ADDRESSCORRESPONDENCELANGUAGE.
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_PPOMAINTHDRDRAFT_STR, 
MANDT TYPE STRING,
PURCHASEORDERHEADERDRAFTUUID TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SUPPLIER TYPE STRING,
CURRENCY TYPE STRING,
PAYMENTTERMS TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
NETPAYMENTDAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
EXCHANGERATE TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
INCOTERMSVERSION TYPE STRING,
INCOTERMSLOCATION1 TYPE STRING,
INCOTERMSLOCATION2 TYPE STRING,
CREATEDBYUSER TYPE STRING,
PURCHASEORDERDATE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEUSER TYPE STRING,
INVOICINGPARTY TYPE STRING,
RELEASEISNOTCOMPLETED TYPE STRING,
ISHELD TYPE STRING,
PURCHASINGDOCUMENTCONDITION TYPE STRING,
PRICINGPROCEDURE TYPE STRING,
ADDRESSID TYPE STRING,
ADDRESSNAME TYPE STRING,
ADDRESSSTREETNAME TYPE STRING,
ADDRESSHOUSENUMBER TYPE STRING,
ADDRESSPOSTALCODE TYPE STRING,
ADDRESSCITYNAME TYPE STRING,
ADDRESSPHONENUMBER TYPE STRING,
ADDRESSFAXNUMBER TYPE STRING,
ADDRESSREGION TYPE STRING,
ADDRESSCOUNTRY TYPE STRING,
ADDRESSCORRESPONDENCELANGUAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPOMAINTHDRDRAFT_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_PPOMAINTHDRDRAFT_STR-MANDT sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASEORDERHEADERDRAFTUUID sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASEORDER sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_PPOMAINTHDRDRAFT_STR-COMPANYCODE sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASINGORGANIZATION sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASINGGROUP sy-vline 
WA_PPOMAINTHDRDRAFT_STR-SUPPLIER sy-vline 
WA_PPOMAINTHDRDRAFT_STR-CURRENCY sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PAYMENTTERMS sy-vline 
WA_PPOMAINTHDRDRAFT_STR-CASHDISCOUNT1DAYS sy-vline 
WA_PPOMAINTHDRDRAFT_STR-CASHDISCOUNT2DAYS sy-vline 
WA_PPOMAINTHDRDRAFT_STR-NETPAYMENTDAYS sy-vline 
WA_PPOMAINTHDRDRAFT_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_PPOMAINTHDRDRAFT_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_PPOMAINTHDRDRAFT_STR-EXCHANGERATE sy-vline 
WA_PPOMAINTHDRDRAFT_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_PPOMAINTHDRDRAFT_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_PPOMAINTHDRDRAFT_STR-INCOTERMSVERSION sy-vline 
WA_PPOMAINTHDRDRAFT_STR-INCOTERMSLOCATION1 sy-vline 
WA_PPOMAINTHDRDRAFT_STR-INCOTERMSLOCATION2 sy-vline 
WA_PPOMAINTHDRDRAFT_STR-CREATEDBYUSER sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASEORDERDATE sy-vline 
WA_PPOMAINTHDRDRAFT_STR-LASTCHANGEDATETIME sy-vline 
WA_PPOMAINTHDRDRAFT_STR-LASTCHANGEUSER sy-vline 
WA_PPOMAINTHDRDRAFT_STR-INVOICINGPARTY sy-vline 
WA_PPOMAINTHDRDRAFT_STR-RELEASEISNOTCOMPLETED sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ISHELD sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PURCHASINGDOCUMENTCONDITION sy-vline 
WA_PPOMAINTHDRDRAFT_STR-PRICINGPROCEDURE sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSID sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSNAME sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSSTREETNAME sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSHOUSENUMBER sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSPOSTALCODE sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSCITYNAME sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSPHONENUMBER sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSFAXNUMBER sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSREGION sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSCOUNTRY sy-vline 
WA_PPOMAINTHDRDRAFT_STR-ADDRESSCORRESPONDENCELANGUAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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