ABAP Select data from SAP table PPAQTYASSGMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPAQTYASSGMT
*  INTO TABLE @DATA(IT_PPAQTYASSGMT2).
*--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_PPAQTYASSGMT INDEX 1 INTO DATA(WA_PPAQTYASSGMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPAQTYASSGMT>-MANDT = 1.
<PPAQTYASSGMT>-PRODALLOCASSIGNEDORDER = 1.
<PPAQTYASSGMT>-PRODALLOCASSIGNEDORDERITEM = 1.
<PPAQTYASSGMT>-PRODALLOCASSIGNEDORDERTYPE = 1.
<PPAQTYASSGMT>-CHARCVALUECOMBINATIONUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPAQTYASSGMT-PRODALLOCPERDSTARTUTCDATETIME, sy-vline,
  WA_PPAQTYASSGMT-CONFIRMATIONUTCDATETIME, sy-vline,
  WA_PPAQTYASSGMT-ASSIGNMENTSEQUENCENUMBERVALUE, sy-vline,
  WA_PPAQTYASSGMT-PURCHASEORDERITEM, sy-vline,
  WA_PPAQTYASSGMT-PRODALLOCPERIODSTARTTIMEZONE, sy-vline,
  WA_PPAQTYASSGMT-CONFIRMATIONTIMEZONE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPAQTYASSGMT 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_PPAQTYASSGMT 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_PPAQTYASSGMT INTO WA_PPAQTYASSGMT.


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

*Conversion exit CUNIT, internal->external for field PRODALLOCASSIGNEDQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPAQTYASSGMT-PRODALLOCASSIGNEDQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPAQTYASSGMT-PRODALLOCASSIGNEDQUANTITYUNIT.
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_PPAQTYASSGMT_STR, 
MANDT TYPE STRING,
PRODALLOCASSIGNEDORDER TYPE STRING,
PRODALLOCASSIGNEDORDERITEM TYPE STRING,
PRODALLOCASSIGNEDORDERTYPE TYPE STRING,
CHARCVALUECOMBINATIONUUID TYPE STRING,
PRODALLOCPERDSTARTUTCDATETIME TYPE STRING,
CONFIRMATIONUTCDATETIME TYPE STRING,
ASSIGNMENTSEQUENCENUMBERVALUE TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PRODALLOCPERIODSTARTTIMEZONE TYPE STRING,
CONFIRMATIONTIMEZONE TYPE STRING,
PRODALLOCPERIODENDUTCDATETIME TYPE STRING,
PRODALLOCPERIODENDTIMEZONE TYPE STRING,
PRODALLOCASSIGNEDQUANTITY TYPE STRING,
PRODALLOCASSIGNEDQUANTITYUNIT TYPE STRING,
CONFIRMATIONDATETIMETYPE TYPE STRING,
PRODALLOCSQNCCONSTRAINTUUID TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPAQTYASSGMT_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_PPAQTYASSGMT_STR-MANDT sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCASSIGNEDORDER sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCASSIGNEDORDERITEM sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCASSIGNEDORDERTYPE sy-vline 
WA_PPAQTYASSGMT_STR-CHARCVALUECOMBINATIONUUID sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCPERDSTARTUTCDATETIME sy-vline 
WA_PPAQTYASSGMT_STR-CONFIRMATIONUTCDATETIME sy-vline 
WA_PPAQTYASSGMT_STR-ASSIGNMENTSEQUENCENUMBERVALUE sy-vline 
WA_PPAQTYASSGMT_STR-PURCHASEORDERITEM sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCPERIODSTARTTIMEZONE sy-vline 
WA_PPAQTYASSGMT_STR-CONFIRMATIONTIMEZONE sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCPERIODENDUTCDATETIME sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCPERIODENDTIMEZONE sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCASSIGNEDQUANTITY sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCASSIGNEDQUANTITYUNIT sy-vline 
WA_PPAQTYASSGMT_STR-CONFIRMATIONDATETIMETYPE sy-vline 
WA_PPAQTYASSGMT_STR-PRODALLOCSQNCCONSTRAINTUUID sy-vline 
WA_PPAQTYASSGMT_STR-CREATIONDATETIME sy-vline 
WA_PPAQTYASSGMT_STR-CREATEDBYUSER sy-vline 
WA_PPAQTYASSGMT_STR-LASTCHANGEDATETIME sy-vline 
WA_PPAQTYASSGMT_STR-LASTCHANGEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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