ABAP Select data from SAP table IMAINTORDER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMAINTORDER
*  INTO TABLE @DATA(IT_IMAINTORDER2).
*--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_IMAINTORDER INDEX 1 INTO DATA(WA_IMAINTORDER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMAINTORDER>-MANDT = 1.
<IMAINTORDER>-MAINTENANCEORDER = 1.
<IMAINTORDER>-MAINTPRIORITYTYPE = 1.
<IMAINTORDER>-MAINTPRIORITY = 1.
<IMAINTORDER>-MAINTENANCEPROCESSINGPHASE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMAINTORDER-MAINTOBJECTLOCACCTASSGMTNMBR, sy-vline,
  WA_IMAINTORDER-MAINTENANCENOTIFICATION, sy-vline,
  WA_IMAINTORDER-EQUIPMENT, sy-vline,
  WA_IMAINTORDER-ASSEMBLY, sy-vline,
  WA_IMAINTORDER-SERIALNUMBER, sy-vline,
  WA_IMAINTORDER-MAINTENANCEPLANNINGPLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMAINTORDER 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_IMAINTORDER 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_IMAINTORDER INTO WA_IMAINTORDER.


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

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

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

*Conversion exit MATN1, internal->external for field ASSEMBLY
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IMAINTORDER-ASSEMBLY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMAINTORDER-ASSEMBLY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_IMAINTORDER-SERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMAINTORDER-SERIALNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit KONPD, internal->external for field PROJECTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_IMAINTORDER-PROJECTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMAINTORDER-PROJECTINTERNALID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field DFSMAINTSUPERORDINATEEQUIPNMBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMAINTORDER-DFSMAINTSUPERORDINATEEQUIPNMBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMAINTORDER-DFSMAINTSUPERORDINATEEQUIPNMBR.
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_IMAINTORDER_STR, 
MANDT TYPE STRING,
MAINTENANCEORDER TYPE STRING,
MAINTPRIORITYTYPE TYPE STRING,
MAINTPRIORITY TYPE STRING,
MAINTENANCEPROCESSINGPHASE TYPE STRING,
MAINTOBJECTLOCACCTASSGMTNMBR TYPE STRING,
MAINTENANCENOTIFICATION TYPE STRING,
EQUIPMENT TYPE STRING,
ASSEMBLY TYPE STRING,
SERIALNUMBER TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
MAINTENANCEREVISION TYPE STRING,
MAINTENANCEPLAN TYPE STRING,
MAINTENANCEITEM TYPE STRING,
MAINTENANCEACTIVITYTYPE TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
MAINTORDERREFERENCEDATE TYPE STRING,
MAINTORDERREFERENCETIME TYPE STRING,
MAINTENANCEORDERPLANNINGCODE TYPE STRING,
OPERATIONSYSTEMCONDITION TYPE STRING,
REFERENCEELEMENT TYPE STRING,
MAINTENANCEITEMOBJECTLIST TYPE STRING,
MAINTENANCEORDEROBJECTLIST TYPE STRING,
PERSONNELNUMBER TYPE STRING,
MAINTORDERROUTINGNUMBER TYPE STRING,
BUSINESSAREA TYPE STRING,
FUNCTIONALAREA TYPE STRING,
MAINTENANCEORDERTYPE TYPE STRING,
MAINTENANCEORDERCATEGORY TYPE STRING,
MAINTENANCEORDERDESC TYPE STRING,
CONTROLLINGAREA TYPE STRING,
COMPANYCODE TYPE STRING,
RESPONSIBLECOSTCENTER TYPE STRING,
PROFITCENTER TYPE STRING,
CONTROLLINGOBJECTCLASS TYPE STRING,
BASICSCHEDULINGTYPE TYPE STRING,
ORDISNOTSCHEDLDAUTOMATICALLY TYPE STRING,
MAINTORDBASICSTARTDATE TYPE STRING,
MAINTORDBASICSTARTTIME TYPE STRING,
MAINTORDBASICENDDATE TYPE STRING,
MAINTORDBASICENDTIME TYPE STRING,
SCHEDULEDBASICSTARTDATE TYPE STRING,
SCHEDULEDBASICSTARTTIME TYPE STRING,
SCHEDULEDBASICENDDATE TYPE STRING,
SCHEDULEDBASICENDTIME TYPE STRING,
MAINTORDPERSONRESPONSIBLE TYPE STRING,
MAINTENANCEORDERINTERNALID TYPE STRING,
TASKLISTGROUP TYPE STRING,
TASKLISTTYPE TYPE STRING,
TASKLISTGROUPCOUNTER TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
ORDERHASLONGTEXT TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ADDITIONALDEVICEDATA TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
PROJECTINTERNALID TYPE STRING,
ORDERPROCESSINGGROUP TYPE STRING,
SUPERIORPROJECTNETWORK TYPE STRING,
MAINWORKCENTER TYPE STRING,
MAINWORKCENTERPLANT TYPE STRING,
CURRENCY TYPE STRING,
LATESTACCEPTABLECOMPLETIONDATE TYPE STRING,
MAINTORDPROCESSPHASECODE TYPE STRING,
MAINTORDPROCESSSUBPHASECODE TYPE STRING,
DFSMAINTORDEROBJECTNMBR TYPE STRING,
DFSMAINTSUPERORDINATEEQUIPNMBR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMAINTORDER_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_IMAINTORDER_STR-MANDT sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEORDER sy-vline 
WA_IMAINTORDER_STR-MAINTPRIORITYTYPE sy-vline 
WA_IMAINTORDER_STR-MAINTPRIORITY sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEPROCESSINGPHASE sy-vline 
WA_IMAINTORDER_STR-MAINTOBJECTLOCACCTASSGMTNMBR sy-vline 
WA_IMAINTORDER_STR-MAINTENANCENOTIFICATION sy-vline 
WA_IMAINTORDER_STR-EQUIPMENT sy-vline 
WA_IMAINTORDER_STR-ASSEMBLY sy-vline 
WA_IMAINTORDER_STR-SERIALNUMBER sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEREVISION sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEPLAN sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEITEM sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEACTIVITYTYPE sy-vline 
WA_IMAINTORDER_STR-WORKCENTERINTERNALID sy-vline 
WA_IMAINTORDER_STR-WORKCENTERTYPECODE sy-vline 
WA_IMAINTORDER_STR-MAINTORDERREFERENCEDATE sy-vline 
WA_IMAINTORDER_STR-MAINTORDERREFERENCETIME sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEORDERPLANNINGCODE sy-vline 
WA_IMAINTORDER_STR-OPERATIONSYSTEMCONDITION sy-vline 
WA_IMAINTORDER_STR-REFERENCEELEMENT sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEITEMOBJECTLIST sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEORDEROBJECTLIST sy-vline 
WA_IMAINTORDER_STR-PERSONNELNUMBER sy-vline 
WA_IMAINTORDER_STR-MAINTORDERROUTINGNUMBER sy-vline 
WA_IMAINTORDER_STR-BUSINESSAREA sy-vline 
WA_IMAINTORDER_STR-FUNCTIONALAREA sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEORDERTYPE sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEORDERCATEGORY sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEORDERDESC sy-vline 
WA_IMAINTORDER_STR-CONTROLLINGAREA sy-vline 
WA_IMAINTORDER_STR-COMPANYCODE sy-vline 
WA_IMAINTORDER_STR-RESPONSIBLECOSTCENTER sy-vline 
WA_IMAINTORDER_STR-PROFITCENTER sy-vline 
WA_IMAINTORDER_STR-CONTROLLINGOBJECTCLASS sy-vline 
WA_IMAINTORDER_STR-BASICSCHEDULINGTYPE sy-vline 
WA_IMAINTORDER_STR-ORDISNOTSCHEDLDAUTOMATICALLY sy-vline 
WA_IMAINTORDER_STR-MAINTORDBASICSTARTDATE sy-vline 
WA_IMAINTORDER_STR-MAINTORDBASICSTARTTIME sy-vline 
WA_IMAINTORDER_STR-MAINTORDBASICENDDATE sy-vline 
WA_IMAINTORDER_STR-MAINTORDBASICENDTIME sy-vline 
WA_IMAINTORDER_STR-SCHEDULEDBASICSTARTDATE sy-vline 
WA_IMAINTORDER_STR-SCHEDULEDBASICSTARTTIME sy-vline 
WA_IMAINTORDER_STR-SCHEDULEDBASICENDDATE sy-vline 
WA_IMAINTORDER_STR-SCHEDULEDBASICENDTIME sy-vline 
WA_IMAINTORDER_STR-MAINTORDPERSONRESPONSIBLE sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEORDERINTERNALID sy-vline 
WA_IMAINTORDER_STR-TASKLISTGROUP sy-vline 
WA_IMAINTORDER_STR-TASKLISTTYPE sy-vline 
WA_IMAINTORDER_STR-TASKLISTGROUPCOUNTER sy-vline 
WA_IMAINTORDER_STR-MAINTENANCEPLANT sy-vline 
WA_IMAINTORDER_STR-CREATIONDATE sy-vline 
WA_IMAINTORDER_STR-CREATIONTIME sy-vline 
WA_IMAINTORDER_STR-CREATEDBYUSER sy-vline 
WA_IMAINTORDER_STR-ORDERHASLONGTEXT sy-vline 
WA_IMAINTORDER_STR-LASTCHANGEDATETIME sy-vline 
WA_IMAINTORDER_STR-ADDITIONALDEVICEDATA sy-vline 
WA_IMAINTORDER_STR-WBSELEMENTINTERNALID sy-vline 
WA_IMAINTORDER_STR-PROJECTINTERNALID sy-vline 
WA_IMAINTORDER_STR-ORDERPROCESSINGGROUP sy-vline 
WA_IMAINTORDER_STR-SUPERIORPROJECTNETWORK sy-vline 
WA_IMAINTORDER_STR-MAINWORKCENTER sy-vline 
WA_IMAINTORDER_STR-MAINWORKCENTERPLANT sy-vline 
WA_IMAINTORDER_STR-CURRENCY sy-vline 
WA_IMAINTORDER_STR-LATESTACCEPTABLECOMPLETIONDATE sy-vline 
WA_IMAINTORDER_STR-MAINTORDPROCESSPHASECODE sy-vline 
WA_IMAINTORDER_STR-MAINTORDPROCESSSUBPHASECODE sy-vline 
WA_IMAINTORDER_STR-DFSMAINTORDEROBJECTNMBR sy-vline 
WA_IMAINTORDER_STR-DFSMAINTSUPERORDINATEEQUIPNMBR sy-vline      INTO ld_text SEPARATED BY SPACE.

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