ABAP Select data from SAP table PMMUNUSEDCNTLPC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMMUNUSEDCNTLPC
*  INTO TABLE @DATA(IT_PMMUNUSEDCNTLPC2).
*--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_PMMUNUSEDCNTLPC INDEX 1 INTO DATA(WA_PMMUNUSEDCNTLPC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMMUNUSEDCNTLPC>-MANDT = 1.
<PMMUNUSEDCNTLPC>-CENTRALPURCHASECONTRACT = 1.
<PMMUNUSEDCNTLPC>-CENTRALPURCHASECONTRACTITEM = 1.
<PMMUNUSEDCNTLPC>-DISTRIBUTIONKEY = 1.
<PMMUNUSEDCNTLPC>-PURCHASECONTRACTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMMUNUSEDCNTLPC-PURCHASINGORGANIZATION, sy-vline,
  WA_PMMUNUSEDCNTLPC-PURCHASINGGROUP, sy-vline,
  WA_PMMUNUSEDCNTLPC-PLANT, sy-vline,
  WA_PMMUNUSEDCNTLPC-COMPANYCODE, sy-vline,
  WA_PMMUNUSEDCNTLPC-SUPPLIER, sy-vline,
  WA_PMMUNUSEDCNTLPC-PURCHASINGDOCUMENTCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMMUNUSEDCNTLPC 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_PMMUNUSEDCNTLPC 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_PMMUNUSEDCNTLPC INTO WA_PMMUNUSEDCNTLPC.


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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PMMUNUSEDCNTLPC-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMUNUSEDCNTLPC-MATERIAL.
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_PMMUNUSEDCNTLPC_STR, 
MANDT TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
CENTRALPURCHASECONTRACTITEM TYPE STRING,
DISTRIBUTIONKEY TYPE STRING,
PURCHASECONTRACTTYPE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PLANT TYPE STRING,
COMPANYCODE TYPE STRING,
SUPPLIER TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
MATERIAL TYPE STRING,
MATERIALGROUP TYPE STRING,
RELEASEORDERDATE TYPE STRING,
RELEASEORDERITEMLASTCHGDATE TYPE STRING,
RELEASEORDERITEMORDERQUANTITY TYPE STRING,
TARGETQUANTITY TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
TARGETAMOUNT TYPE STRING,
RELEASEORDERITEMNETAMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMMUNUSEDCNTLPC_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_PMMUNUSEDCNTLPC_STR-MANDT sy-vline 
WA_PMMUNUSEDCNTLPC_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_PMMUNUSEDCNTLPC_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_PMMUNUSEDCNTLPC_STR-DISTRIBUTIONKEY sy-vline 
WA_PMMUNUSEDCNTLPC_STR-PURCHASECONTRACTTYPE sy-vline 
WA_PMMUNUSEDCNTLPC_STR-PURCHASINGORGANIZATION sy-vline 
WA_PMMUNUSEDCNTLPC_STR-PURCHASINGGROUP sy-vline 
WA_PMMUNUSEDCNTLPC_STR-PLANT sy-vline 
WA_PMMUNUSEDCNTLPC_STR-COMPANYCODE sy-vline 
WA_PMMUNUSEDCNTLPC_STR-SUPPLIER sy-vline 
WA_PMMUNUSEDCNTLPC_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_PMMUNUSEDCNTLPC_STR-VALIDITYSTARTDATE sy-vline 
WA_PMMUNUSEDCNTLPC_STR-VALIDITYENDDATE sy-vline 
WA_PMMUNUSEDCNTLPC_STR-CREATEDBYUSER sy-vline 
WA_PMMUNUSEDCNTLPC_STR-CREATIONDATE sy-vline 
WA_PMMUNUSEDCNTLPC_STR-MATERIAL sy-vline 
WA_PMMUNUSEDCNTLPC_STR-MATERIALGROUP sy-vline 
WA_PMMUNUSEDCNTLPC_STR-RELEASEORDERDATE sy-vline 
WA_PMMUNUSEDCNTLPC_STR-RELEASEORDERITEMLASTCHGDATE sy-vline 
WA_PMMUNUSEDCNTLPC_STR-RELEASEORDERITEMORDERQUANTITY sy-vline 
WA_PMMUNUSEDCNTLPC_STR-TARGETQUANTITY sy-vline 
WA_PMMUNUSEDCNTLPC_STR-DISPLAYCURRENCY sy-vline 
WA_PMMUNUSEDCNTLPC_STR-TARGETAMOUNT sy-vline 
WA_PMMUNUSEDCNTLPC_STR-RELEASEORDERITEMNETAMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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