ABAP Select data from SAP table PPURREQNPFINV into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPURREQNPFINV
*  INTO TABLE @DATA(IT_PPURREQNPFINV2).
*--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_PPURREQNPFINV INDEX 1 INTO DATA(WA_PPURREQNPFINV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPURREQNPFINV>-MANDT = 1.
<PPURREQNPFINV>-PRECEDINGDOCUMENT = 1.
<PPURREQNPFINV>-PRECEDINGDOCUMENTITEM = 1.
<PPURREQNPFINV>-SUBSEQUENTDOCUMENT = 1.
<PPURREQNPFINV>-SUBSEQUENTDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPURREQNPFINV-PRECEDINGDOCUMENTCATEGORY, sy-vline,
  WA_PPURREQNPFINV-SUBSEQUENTDOCUMENTCATEGORY, sy-vline,
  WA_PPURREQNPFINV-FISCALYEAR, sy-vline,
  WA_PPURREQNPFINV-COMPANYCODE, sy-vline,
  WA_PPURREQNPFINV-PURCHASEREQUISITION, sy-vline,
  WA_PPURREQNPFINV-PURCHASEREQUISITIONITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPURREQNPFINV 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_PPURREQNPFINV 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_PPURREQNPFINV INTO WA_PPURREQNPFINV.


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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PPURREQNPFINV-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPURREQNPFINV-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field REFERENCEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPURREQNPFINV-REFERENCEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPURREQNPFINV-REFERENCEDOCUMENT.
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_PPURREQNPFINV_STR, 
MANDT TYPE STRING,
PRECEDINGDOCUMENT TYPE STRING,
PRECEDINGDOCUMENTITEM TYPE STRING,
SUBSEQUENTDOCUMENT TYPE STRING,
SUBSEQUENTDOCUMENTITEM TYPE STRING,
PRECEDINGDOCUMENTCATEGORY TYPE STRING,
SUBSEQUENTDOCUMENTCATEGORY TYPE STRING,
FISCALYEAR TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
REFERENCEDOCUMENTITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPURREQNPFINV_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_PPURREQNPFINV_STR-MANDT sy-vline 
WA_PPURREQNPFINV_STR-PRECEDINGDOCUMENT sy-vline 
WA_PPURREQNPFINV_STR-PRECEDINGDOCUMENTITEM sy-vline 
WA_PPURREQNPFINV_STR-SUBSEQUENTDOCUMENT sy-vline 
WA_PPURREQNPFINV_STR-SUBSEQUENTDOCUMENTITEM sy-vline 
WA_PPURREQNPFINV_STR-PRECEDINGDOCUMENTCATEGORY sy-vline 
WA_PPURREQNPFINV_STR-SUBSEQUENTDOCUMENTCATEGORY sy-vline 
WA_PPURREQNPFINV_STR-FISCALYEAR sy-vline 
WA_PPURREQNPFINV_STR-COMPANYCODE sy-vline 
WA_PPURREQNPFINV_STR-PURCHASEREQUISITION sy-vline 
WA_PPURREQNPFINV_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_PPURREQNPFINV_STR-REFERENCEDOCUMENT sy-vline 
WA_PPURREQNPFINV_STR-REFERENCEDOCUMENTITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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