ABAP Select data from SAP table PMAINTORDDURN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMAINTORDDURN
*  INTO TABLE @DATA(IT_PMAINTORDDURN2).
*--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_PMAINTORDDURN INDEX 1 INTO DATA(WA_PMAINTORDDURN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMAINTORDDURN>-MANDT = 1.
<PMAINTORDDURN>-MAINTENANCEORDER = 1.
<PMAINTORDDURN>-ORDERCATEGORY = 1.
<PMAINTORDDURN>-ORDERTYPE = 1.
<PMAINTORDDURN>-MAINTENANCEPLANNINGPLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMAINTORDDURN-FACTORYCALENDAR, sy-vline,
  WA_PMAINTORDDURN-PLANNEDSTARTDATE, sy-vline,
  WA_PMAINTORDDURN-PLANNEDSTARTTIME, sy-vline,
  WA_PMAINTORDDURN-PLANNEDENDDATE, sy-vline,
  WA_PMAINTORDDURN-PLANNEDENDTIME, sy-vline,
  WA_PMAINTORDDURN-SCHEDULEDBASICSTARTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMAINTORDDURN 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_PMAINTORDDURN 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_PMAINTORDDURN INTO WA_PMAINTORDDURN.


*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 MAINTENANCEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMAINTORDDURN-MAINTENANCEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMAINTORDDURN-MAINTENANCEORDER.
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_PMAINTORDDURN_STR, 
MANDT TYPE STRING,
MAINTENANCEORDER TYPE STRING,
ORDERCATEGORY TYPE STRING,
ORDERTYPE TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
FACTORYCALENDAR TYPE STRING,
PLANNEDSTARTDATE TYPE STRING,
PLANNEDSTARTTIME TYPE STRING,
PLANNEDENDDATE TYPE STRING,
PLANNEDENDTIME TYPE STRING,
SCHEDULEDBASICSTARTDATE TYPE STRING,
SCHEDULEDBASICSTARTTIME TYPE STRING,
SCHEDULEDBASICENDDATE TYPE STRING,
SCHEDULEDBASICENDTIME TYPE STRING,
SCHEDULEDRELEASEDATE TYPE STRING,
ACTUALSTARTDATE TYPE STRING,
ACTUALSTARTTIME TYPE STRING,
ACTUALENDDATE TYPE STRING,
ACTUALRELEASEDDATE TYPE STRING,
CONFIRMEDENDDATE TYPE STRING,
CONFIRMEDENDTIME TYPE STRING,
SCHEDULEDFORECASTEDSTARTDATE TYPE STRING,
SCHEDULEDFORECASTEDSTARTTIME TYPE STRING,
SCHEDULEDFORECASTEDENDDATE TYPE STRING,
SCHEDULEDFORECASTEDENDTIME TYPE STRING,
SCHEDULEDFCSTDRELEASEDATE TYPE STRING,
FORECASTEDSTARTDATE TYPE STRING,
FORECASTEDSTARTTIME TYPE STRING,
FORECASTEDENDDATE TYPE STRING,
FORECASTEDENDTIME TYPE STRING,
TOTALCOMMITMENTDATE TYPE STRING,
LASTSCHEDULEDDATE TYPE STRING,
PLANNEDRELEASEDATE TYPE STRING,
PLANNEDCOMPLETIONDATE TYPE STRING,
TECHNICALCOMPLETIONDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMAINTORDDURN_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_PMAINTORDDURN_STR-MANDT sy-vline 
WA_PMAINTORDDURN_STR-MAINTENANCEORDER sy-vline 
WA_PMAINTORDDURN_STR-ORDERCATEGORY sy-vline 
WA_PMAINTORDDURN_STR-ORDERTYPE sy-vline 
WA_PMAINTORDDURN_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_PMAINTORDDURN_STR-FACTORYCALENDAR sy-vline 
WA_PMAINTORDDURN_STR-PLANNEDSTARTDATE sy-vline 
WA_PMAINTORDDURN_STR-PLANNEDSTARTTIME sy-vline 
WA_PMAINTORDDURN_STR-PLANNEDENDDATE sy-vline 
WA_PMAINTORDDURN_STR-PLANNEDENDTIME sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDBASICSTARTDATE sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDBASICSTARTTIME sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDBASICENDDATE sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDBASICENDTIME sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDRELEASEDATE sy-vline 
WA_PMAINTORDDURN_STR-ACTUALSTARTDATE sy-vline 
WA_PMAINTORDDURN_STR-ACTUALSTARTTIME sy-vline 
WA_PMAINTORDDURN_STR-ACTUALENDDATE sy-vline 
WA_PMAINTORDDURN_STR-ACTUALRELEASEDDATE sy-vline 
WA_PMAINTORDDURN_STR-CONFIRMEDENDDATE sy-vline 
WA_PMAINTORDDURN_STR-CONFIRMEDENDTIME sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDFORECASTEDSTARTDATE sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDFORECASTEDSTARTTIME sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDFORECASTEDENDDATE sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDFORECASTEDENDTIME sy-vline 
WA_PMAINTORDDURN_STR-SCHEDULEDFCSTDRELEASEDATE sy-vline 
WA_PMAINTORDDURN_STR-FORECASTEDSTARTDATE sy-vline 
WA_PMAINTORDDURN_STR-FORECASTEDSTARTTIME sy-vline 
WA_PMAINTORDDURN_STR-FORECASTEDENDDATE sy-vline 
WA_PMAINTORDDURN_STR-FORECASTEDENDTIME sy-vline 
WA_PMAINTORDDURN_STR-TOTALCOMMITMENTDATE sy-vline 
WA_PMAINTORDDURN_STR-LASTSCHEDULEDDATE sy-vline 
WA_PMAINTORDDURN_STR-PLANNEDRELEASEDATE sy-vline 
WA_PMAINTORDDURN_STR-PLANNEDCOMPLETIONDATE sy-vline 
WA_PMAINTORDDURN_STR-TECHNICALCOMPLETIONDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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