ABAP Select data from SAP table PMAINTORDCOMPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMAINTORDCOMPL
*  INTO TABLE @DATA(IT_PMAINTORDCOMPL2).
*--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_PMAINTORDCOMPL INDEX 1 INTO DATA(WA_PMAINTORDCOMPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMAINTORDCOMPL>-MANDT = 1.
<PMAINTORDCOMPL>-MAINTENANCEORDER = 1.
<PMAINTORDCOMPL>-MAINTENANCEORDERDESC = 1.
<PMAINTORDCOMPL>-MAINTORDPERSONRESPONSIBLE = 1.
<PMAINTORDCOMPL>-MAINTORDHASOPENPURCHASEORDERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMAINTORDCOMPL-MAINTORDHASOPENSERVICES, sy-vline,
  WA_PMAINTORDCOMPL-MAINTORDERHASOPENRESERVATIONS, sy-vline,
  WA_PMAINTORDCOMPL-REFERENCEDATE, sy-vline,
  WA_PMAINTORDCOMPL-MAINTENANCEREVISION, sy-vline,
  WA_PMAINTORDCOMPL-CONTROLLINGAREA, sy-vline,
  WA_PMAINTORDCOMPL-MAINTENANCEORDERINTERNALID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMAINTORDCOMPL 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_PMAINTORDCOMPL 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_PMAINTORDCOMPL INTO WA_PMAINTORDCOMPL.


*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_PMAINTORDCOMPL-MAINTENANCEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMAINTORDCOMPL-MAINTENANCEORDER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field EQUIPMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMAINTORDCOMPL-EQUIPMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMAINTORDCOMPL-EQUIPMENT.
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_PMAINTORDCOMPL_STR, 
MANDT TYPE STRING,
MAINTENANCEORDER TYPE STRING,
MAINTENANCEORDERDESC TYPE STRING,
MAINTORDPERSONRESPONSIBLE TYPE STRING,
MAINTORDHASOPENPURCHASEORDERS TYPE STRING,
MAINTORDHASOPENSERVICES TYPE STRING,
MAINTORDERHASOPENRESERVATIONS TYPE STRING,
REFERENCEDATE TYPE STRING,
MAINTENANCEREVISION TYPE STRING,
CONTROLLINGAREA TYPE STRING,
MAINTENANCEORDERINTERNALID TYPE STRING,
CURRENCY TYPE STRING,
MAINWORKCENTER TYPE STRING,
MAINWORKCENTERPLANT TYPE STRING,
RESPONSIBLECOSTCENTER TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
MAINTENANCEORDERTYPE TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
MAINTOBJECTLOCACCTASSGMTNMBR TYPE STRING,
EQUIPMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMAINTORDCOMPL_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_PMAINTORDCOMPL_STR-MANDT sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEORDER sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEORDERDESC sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTORDPERSONRESPONSIBLE sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTORDHASOPENPURCHASEORDERS sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTORDHASOPENSERVICES sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTORDERHASOPENRESERVATIONS sy-vline 
WA_PMAINTORDCOMPL_STR-REFERENCEDATE sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEREVISION sy-vline 
WA_PMAINTORDCOMPL_STR-CONTROLLINGAREA sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEORDERINTERNALID sy-vline 
WA_PMAINTORDCOMPL_STR-CURRENCY sy-vline 
WA_PMAINTORDCOMPL_STR-MAINWORKCENTER sy-vline 
WA_PMAINTORDCOMPL_STR-MAINWORKCENTERPLANT sy-vline 
WA_PMAINTORDCOMPL_STR-RESPONSIBLECOSTCENTER sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEORDERTYPE sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTENANCEPLANT sy-vline 
WA_PMAINTORDCOMPL_STR-MAINTOBJECTLOCACCTASSGMTNMBR sy-vline 
WA_PMAINTORDCOMPL_STR-EQUIPMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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