ABAP Select data from SAP table PMMPOIENHCD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMMPOIENHCD
*  INTO TABLE @DATA(IT_PMMPOIENHCD2).
*--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_PMMPOIENHCD INDEX 1 INTO DATA(WA_PMMPOIENHCD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMMPOIENHCD>-MANDT = 1.
<PMMPOIENHCD>-PURCHASEORDER = 1.
<PMMPOIENHCD>-PURCHASEORDERITEM = 1.
<PMMPOIENHCD>-PURCHASEREQUISITION = 1.
<PMMPOIENHCD>-PURCHASEREQUISITIONITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMMPOIENHCD-SUPPLIER, sy-vline,
  WA_PMMPOIENHCD-PURCHASINGORGANIZATION, sy-vline,
  WA_PMMPOIENHCD-PURCHASINGGROUP, sy-vline,
  WA_PMMPOIENHCD-COMPANYCODE, sy-vline,
  WA_PMMPOIENHCD-PURCHASEORDERTYPE, sy-vline,
  WA_PMMPOIENHCD-ISCOMPLETELYDELIVERED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMMPOIENHCD 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_PMMPOIENHCD 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_PMMPOIENHCD INTO WA_PMMPOIENHCD.


*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_PMMPOIENHCD-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMPOIENHCD-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PMMPOIENHCD-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMPOIENHCD-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field PURCHASEORDERQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PMMPOIENHCD-PURCHASEORDERQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMPOIENHCD-PURCHASEORDERQUANTITYUNIT.
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_PMMPOIENHCD_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
SUPPLIER TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASEORDERTYPE TYPE STRING,
ISCOMPLETELYDELIVERED TYPE STRING,
PURCHASEORDERDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
PURCHASEORDERITEMCATEGORY TYPE STRING,
PURCHASEORDERCATEGORY TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
PRODUCTTYPE TYPE STRING,
SERVICEPERFORMER TYPE STRING,
MULTIPLEACCTASSGMTDISTRIBUTION TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
NETAMOUNTINREPORTINGCURRENCY TYPE STRING,
NETPRICEINREPORTINGCURRENCY TYPE STRING,
ANALYTICALREPORTINGCURRENCY TYPE STRING,
NETAMOUNTINREPORTINGCURRENCY2 TYPE STRING,
NETPRICEINREPORTINGCURRENCY2 TYPE STRING,
ANALYTICALREPORTINGCURRENCY2 TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
PURCHASEORDERQUANTITYUNIT TYPE STRING,
NETPRICEQUANTITY TYPE STRING,
ORDERQUANTITY TYPE STRING,
NETAMOUNT TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
ISRETURNSITEM TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
PURGDOCUMENTITEMDELETIONCODE TYPE STRING,
RELEASEISNOTCOMPLETED TYPE STRING,
PURCHASINGCOMPLETENESSSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMMPOIENHCD_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_PMMPOIENHCD_STR-MANDT sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEORDER sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEORDERITEM sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEREQUISITION sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_PMMPOIENHCD_STR-SUPPLIER sy-vline 
WA_PMMPOIENHCD_STR-PURCHASINGORGANIZATION sy-vline 
WA_PMMPOIENHCD_STR-PURCHASINGGROUP sy-vline 
WA_PMMPOIENHCD_STR-COMPANYCODE sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEORDERTYPE sy-vline 
WA_PMMPOIENHCD_STR-ISCOMPLETELYDELIVERED sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEORDERDATE sy-vline 
WA_PMMPOIENHCD_STR-CREATEDBYUSER sy-vline 
WA_PMMPOIENHCD_STR-DOCUMENTCURRENCY sy-vline 
WA_PMMPOIENHCD_STR-MATERIALGROUP sy-vline 
WA_PMMPOIENHCD_STR-MATERIAL sy-vline 
WA_PMMPOIENHCD_STR-PLANT sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEORDERITEMCATEGORY sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEORDERCATEGORY sy-vline 
WA_PMMPOIENHCD_STR-PURCHASECONTRACT sy-vline 
WA_PMMPOIENHCD_STR-PURCHASECONTRACTITEM sy-vline 
WA_PMMPOIENHCD_STR-PRODUCTTYPE sy-vline 
WA_PMMPOIENHCD_STR-SERVICEPERFORMER sy-vline 
WA_PMMPOIENHCD_STR-MULTIPLEACCTASSGMTDISTRIBUTION sy-vline 
WA_PMMPOIENHCD_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_PMMPOIENHCD_STR-NETAMOUNTINREPORTINGCURRENCY sy-vline 
WA_PMMPOIENHCD_STR-NETPRICEINREPORTINGCURRENCY sy-vline 
WA_PMMPOIENHCD_STR-ANALYTICALREPORTINGCURRENCY sy-vline 
WA_PMMPOIENHCD_STR-NETAMOUNTINREPORTINGCURRENCY2 sy-vline 
WA_PMMPOIENHCD_STR-NETPRICEINREPORTINGCURRENCY2 sy-vline 
WA_PMMPOIENHCD_STR-ANALYTICALREPORTINGCURRENCY2 sy-vline 
WA_PMMPOIENHCD_STR-DISPLAYCURRENCY sy-vline 
WA_PMMPOIENHCD_STR-PURCHASEORDERQUANTITYUNIT sy-vline 
WA_PMMPOIENHCD_STR-NETPRICEQUANTITY sy-vline 
WA_PMMPOIENHCD_STR-ORDERQUANTITY sy-vline 
WA_PMMPOIENHCD_STR-NETAMOUNT sy-vline 
WA_PMMPOIENHCD_STR-NETPRICEAMOUNT sy-vline 
WA_PMMPOIENHCD_STR-ISRETURNSITEM sy-vline 
WA_PMMPOIENHCD_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_PMMPOIENHCD_STR-PURGDOCUMENTITEMDELETIONCODE sy-vline 
WA_PMMPOIENHCD_STR-RELEASEISNOTCOMPLETED sy-vline 
WA_PMMPOIENHCD_STR-PURCHASINGCOMPLETENESSSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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