ABAP Select data from SAP table PMMPSOPENREQN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMMPSOPENREQN
*  INTO TABLE @DATA(IT_PMMPSOPENREQN2).
*--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_PMMPSOPENREQN INDEX 1 INTO DATA(WA_PMMPSOPENREQN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMMPSOPENREQN>-MANDT = 1.
<PMMPSOPENREQN>-PURCHASEREQUISITION = 1.
<PMMPSOPENREQN>-PURCHASEREQUISITIONITEM = 1.
<PMMPSOPENREQN>-PURCHASINGDOCUMENTCATEGORY = 1.
<PMMPSOPENREQN>-PURCHASINGDOCUMENTITEMCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMMPSOPENREQN-PURREQNRELEASESTATUS, sy-vline,
  WA_PMMPSOPENREQN-PURCHASEREQUISITIONTYPE, sy-vline,
  WA_PMMPSOPENREQN-ISPURREQNCMPLT, sy-vline,
  WA_PMMPSOPENREQN-PURREQNCMPLTNSCAT, sy-vline,
  WA_PMMPSOPENREQN-PURCHASINGORGANIZATION, sy-vline,
  WA_PMMPSOPENREQN-PURCHASINGGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMMPSOPENREQN 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_PMMPSOPENREQN 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_PMMPSOPENREQN INTO WA_PMMPSOPENREQN.


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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PMMPSOPENREQN-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMPSOPENREQN-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_PMMPSOPENREQN_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
PURREQNRELEASESTATUS TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
ISPURREQNCMPLT TYPE STRING,
PURREQNCMPLTNSCAT TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SUPPLIER TYPE STRING,
COMPANYCODE TYPE STRING,
PLANT TYPE STRING,
MATERIAL TYPE STRING,
MATERIALGROUP TYPE STRING,
PURCHASEREQUISITIONRELEASEDATE TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
PURCHASEREQUISITIONPRICE TYPE STRING,
PURREQNITEMCURRENCY TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
EXPECTEDSPEND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMMPSOPENREQN_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_PMMPSOPENREQN_STR-MANDT sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASEREQUISITION sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_PMMPSOPENREQN_STR-PURREQNRELEASESTATUS sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_PMMPSOPENREQN_STR-ISPURREQNCMPLT sy-vline 
WA_PMMPSOPENREQN_STR-PURREQNCMPLTNSCAT sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASINGORGANIZATION sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASINGGROUP sy-vline 
WA_PMMPSOPENREQN_STR-SUPPLIER sy-vline 
WA_PMMPSOPENREQN_STR-COMPANYCODE sy-vline 
WA_PMMPSOPENREQN_STR-PLANT sy-vline 
WA_PMMPSOPENREQN_STR-MATERIAL sy-vline 
WA_PMMPSOPENREQN_STR-MATERIALGROUP sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASEREQUISITIONRELEASEDATE sy-vline 
WA_PMMPSOPENREQN_STR-DISPLAYCURRENCY sy-vline 
WA_PMMPSOPENREQN_STR-PURCHASEREQUISITIONPRICE sy-vline 
WA_PMMPSOPENREQN_STR-PURREQNITEMCURRENCY sy-vline 
WA_PMMPSOPENREQN_STR-REQUESTEDQUANTITY sy-vline 
WA_PMMPSOPENREQN_STR-EXPECTEDSPEND sy-vline      INTO ld_text SEPARATED BY SPACE.

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