ABAP Select data from SAP table PMMCONTRLEAKGPC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMMCONTRLEAKGPC
*  INTO TABLE @DATA(IT_PMMCONTRLEAKGPC2).
*--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_PMMCONTRLEAKGPC INDEX 1 INTO DATA(WA_PMMCONTRLEAKGPC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMMCONTRLEAKGPC>-MANDT = 1.
<PMMCONTRLEAKGPC>-PURCHASECONTRACT = 1.
<PMMCONTRLEAKGPC>-PURCHASECONTRACTITEM = 1.
<PMMCONTRLEAKGPC>-IDENTIFIER = 1.
<PMMCONTRLEAKGPC>-TARGETAMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMMCONTRLEAKGPC-TARGETQUANTITY, sy-vline,
  WA_PMMCONTRLEAKGPC-RELEASEORDERITEMNETAMOUNT, sy-vline,
  WA_PMMCONTRLEAKGPC-RELEASEORDERITEMORDERQUANTITY, sy-vline,
  WA_PMMCONTRLEAKGPC-CONTRACTNETPRICEAMOUNT, sy-vline,
  WA_PMMCONTRLEAKGPC-DOCUMENTCURRENCY, sy-vline,
  WA_PMMCONTRLEAKGPC-MATERIAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMMCONTRLEAKGPC 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_PMMCONTRLEAKGPC 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_PMMCONTRLEAKGPC INTO WA_PMMCONTRLEAKGPC.


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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMMCONTRLEAKGPC-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMCONTRLEAKGPC-SUPPLIER.
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_PMMCONTRLEAKGPC_STR, 
MANDT TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
IDENTIFIER TYPE STRING,
TARGETAMOUNT TYPE STRING,
TARGETQUANTITY TYPE STRING,
RELEASEORDERITEMNETAMOUNT TYPE STRING,
RELEASEORDERITEMORDERQUANTITY TYPE STRING,
CONTRACTNETPRICEAMOUNT TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
MATERIAL TYPE STRING,
MATERIALGROUP TYPE STRING,
SUPPLIER TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
CONTRACTPLANT TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
CREATIONDATE TYPE STRING,
UNRELEASEDAMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMMCONTRLEAKGPC_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_PMMCONTRLEAKGPC_STR-MANDT sy-vline 
WA_PMMCONTRLEAKGPC_STR-PURCHASECONTRACT sy-vline 
WA_PMMCONTRLEAKGPC_STR-PURCHASECONTRACTITEM sy-vline 
WA_PMMCONTRLEAKGPC_STR-IDENTIFIER sy-vline 
WA_PMMCONTRLEAKGPC_STR-TARGETAMOUNT sy-vline 
WA_PMMCONTRLEAKGPC_STR-TARGETQUANTITY sy-vline 
WA_PMMCONTRLEAKGPC_STR-RELEASEORDERITEMNETAMOUNT sy-vline 
WA_PMMCONTRLEAKGPC_STR-RELEASEORDERITEMORDERQUANTITY sy-vline 
WA_PMMCONTRLEAKGPC_STR-CONTRACTNETPRICEAMOUNT sy-vline 
WA_PMMCONTRLEAKGPC_STR-DOCUMENTCURRENCY sy-vline 
WA_PMMCONTRLEAKGPC_STR-MATERIAL sy-vline 
WA_PMMCONTRLEAKGPC_STR-MATERIALGROUP sy-vline 
WA_PMMCONTRLEAKGPC_STR-SUPPLIER sy-vline 
WA_PMMCONTRLEAKGPC_STR-COMPANYCODE sy-vline 
WA_PMMCONTRLEAKGPC_STR-PURCHASINGORGANIZATION sy-vline 
WA_PMMCONTRLEAKGPC_STR-PURCHASINGGROUP sy-vline 
WA_PMMCONTRLEAKGPC_STR-CONTRACTPLANT sy-vline 
WA_PMMCONTRLEAKGPC_STR-VALIDITYSTARTDATE sy-vline 
WA_PMMCONTRLEAKGPC_STR-VALIDITYENDDATE sy-vline 
WA_PMMCONTRLEAKGPC_STR-CREATIONDATE sy-vline 
WA_PMMCONTRLEAKGPC_STR-UNRELEASEDAMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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