ABAP Select data from SAP table PASQNCD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PASQNCD 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 PASQNCD. 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 PASQNCD 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_PASQNCD TYPE STANDARD TABLE OF PASQNCD,
      WA_PASQNCD TYPE PASQNCD,
      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: <PASQNCD> TYPE PASQNCD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PASQNCD
*  INTO TABLE @DATA(IT_PASQNCD2).
*--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_PASQNCD INDEX 1 INTO DATA(WA_PASQNCD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PASQNCD>-MANDT = 1.
<PASQNCD>-PRODUCTALLOCATIONSEQUENCEUUID = 1.
<PASQNCD>-PRODUCTALLOCATIONSEQUENCE = 1.
<PASQNCD>-NUMBEROFBACKWARDCNSMPNPERIODS = 1.
<PASQNCD>-NUMBEROFFORWARDCNSMPNPERIODS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PASQNCD-HORIZONTALCONSUMPTIONDIRECTION, sy-vline,
  WA_PASQNCD-VERTICALCONSUMPTIONDIRECTION, sy-vline,
  WA_PASQNCD-PASTPERIODISALLOWED, sy-vline,
  WA_PASQNCD-PRODALLOCSQNCCONSUMPTIONUNIT, sy-vline,
  WA_PASQNCD-PRODALLOCCONSISTENCYSTATUS, sy-vline,
  WA_PASQNCD-PRODALLOCATIONLIFECYCLESTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PASQNCD 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_PASQNCD 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_PASQNCD INTO WA_PASQNCD.


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

*Conversion exit CUNIT, internal->external for field PRODALLOCSQNCCONSUMPTIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PASQNCD-PRODALLOCSQNCCONSUMPTIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PASQNCD-PRODALLOCSQNCCONSUMPTIONUNIT.
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_PASQNCD_STR, 
MANDT TYPE STRING,
PRODUCTALLOCATIONSEQUENCEUUID TYPE STRING,
PRODUCTALLOCATIONSEQUENCE TYPE STRING,
NUMBEROFBACKWARDCNSMPNPERIODS TYPE STRING,
NUMBEROFFORWARDCNSMPNPERIODS TYPE STRING,
HORIZONTALCONSUMPTIONDIRECTION TYPE STRING,
VERTICALCONSUMPTIONDIRECTION TYPE STRING,
PASTPERIODISALLOWED TYPE STRING,
PRODALLOCSQNCCONSUMPTIONUNIT TYPE STRING,
PRODALLOCCONSISTENCYSTATUS TYPE STRING,
PRODALLOCATIONLIFECYCLESTATUS TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
PASQNC_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PASQNCD_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_PASQNCD_STR-MANDT sy-vline 
WA_PASQNCD_STR-PRODUCTALLOCATIONSEQUENCEUUID sy-vline 
WA_PASQNCD_STR-PRODUCTALLOCATIONSEQUENCE sy-vline 
WA_PASQNCD_STR-NUMBEROFBACKWARDCNSMPNPERIODS sy-vline 
WA_PASQNCD_STR-NUMBEROFFORWARDCNSMPNPERIODS sy-vline 
WA_PASQNCD_STR-HORIZONTALCONSUMPTIONDIRECTION sy-vline 
WA_PASQNCD_STR-VERTICALCONSUMPTIONDIRECTION sy-vline 
WA_PASQNCD_STR-PASTPERIODISALLOWED sy-vline 
WA_PASQNCD_STR-PRODALLOCSQNCCONSUMPTIONUNIT sy-vline 
WA_PASQNCD_STR-PRODALLOCCONSISTENCYSTATUS sy-vline 
WA_PASQNCD_STR-PRODALLOCATIONLIFECYCLESTATUS sy-vline 
WA_PASQNCD_STR-CREATIONDATETIME sy-vline 
WA_PASQNCD_STR-CREATIONDATE sy-vline 
WA_PASQNCD_STR-CREATEDBYUSER sy-vline 
WA_PASQNCD_STR-LASTCHANGEDATETIME sy-vline 
WA_PASQNCD_STR-LASTCHANGEDATE sy-vline 
WA_PASQNCD_STR-LASTCHANGEDBYUSER sy-vline 
WA_PASQNCD_STR-ACTIVEUUID sy-vline 
WA_PASQNCD_STR-HASACTIVEENTITY sy-vline 
WA_PASQNCD_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PASQNCD_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PASQNCD_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PASQNCD_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_PASQNCD_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_PASQNCD_STR-PASQNC_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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