ABAP Select data from SAP table MAINTORDER_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MAINTORDER_D
*  INTO TABLE @DATA(IT_MAINTORDER_D2).
*--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_MAINTORDER_D INDEX 1 INTO DATA(WA_MAINTORDER_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MAINTORDER_D>-MANDT = 1.
<MAINTORDER_D>-DRAFTUUID = 1.
<MAINTORDER_D>-MAINTENANCEORDER = 1.
<MAINTORDER_D>-MAINTENANCEORDERFOREDIT = 1.
<MAINTORDER_D>-TECHNICALOBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MAINTORDER_D-TECHOBJISEQUIPORFUNCNLLOC, sy-vline,
  WA_MAINTORDER_D-MAINTPRIORITYTYPE, sy-vline,
  WA_MAINTORDER_D-MAINTPRIORITY, sy-vline,
  WA_MAINTORDER_D-MAINTENANCEPROCESSINGPHASE, sy-vline,
  WA_MAINTORDER_D-MAINTOBJECTLOCACCTASSGMTNMBR, sy-vline,
  WA_MAINTORDER_D-MAINTENANCENOTIFICATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MAINTORDER_D 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_MAINTORDER_D 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_MAINTORDER_D INTO WA_MAINTORDER_D.


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

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

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

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

*Conversion exit TPLNR, internal->external for field FUNCTIONALLOCATION
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_MAINTORDER_D-FUNCTIONALLOCATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAINTORDER_D-FUNCTIONALLOCATION.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TASKLISTGROUPCOUNTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAINTORDER_D-TASKLISTGROUPCOUNTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAINTORDER_D-TASKLISTGROUPCOUNTER.
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_MAINTORDER_D_STR, 
MANDT TYPE STRING,
DRAFTUUID TYPE STRING,
MAINTENANCEORDER TYPE STRING,
MAINTENANCEORDERFOREDIT TYPE STRING,
TECHNICALOBJECT TYPE STRING,
TECHOBJISEQUIPORFUNCNLLOC TYPE STRING,
MAINTPRIORITYTYPE TYPE STRING,
MAINTPRIORITY TYPE STRING,
MAINTENANCEPROCESSINGPHASE TYPE STRING,
MAINTOBJECTLOCACCTASSGMTNMBR TYPE STRING,
MAINTENANCENOTIFICATION TYPE STRING,
EQUIPMENT TYPE STRING,
FUNCTIONALLOCATION TYPE STRING,
MAINTENANCEITEM TYPE STRING,
MAINTENANCEPLANITEMINTID TYPE STRING,
ASSEMBLY TYPE STRING,
SERIALNUMBER TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
MAINTENANCEREVISION TYPE STRING,
MAINTENANCEPLAN TYPE STRING,
MAINTORDERROUTINGNUMBER TYPE STRING,
MAINTENANCEORDERTYPE TYPE STRING,
MAINTENANCEORDERCATEGORY TYPE STRING,
MAINTENANCEORDERDESC TYPE STRING,
BASICSCHEDULINGTYPE TYPE STRING,
ORDISNOTSCHEDLDAUTOMATICALLY TYPE STRING,
MAINTORDBASICSTARTDATE TYPE STRING,
MAINTORDBASICENDDATE TYPE STRING,
LATESTACCEPTABLECOMPLETIONDATE TYPE STRING,
SCHEDULEDBASICSTARTDATE TYPE STRING,
SCHEDULEDBASICSTARTTIME TYPE STRING,
SCHEDULEDBASICENDDATE TYPE STRING,
SCHEDULEDBASICENDTIME TYPE STRING,
MAINTENANCEORDERINTERNALID TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
BUSINESSAREA TYPE STRING,
MAINTORDMAINWORKCENTER TYPE STRING,
MAINTORDMAINWORKCENTERPLANT TYPE STRING,
MAINTORDPERSONRESPONSIBLE TYPE STRING,
MAINTORDERREFERENCEDATE TYPE STRING,
MAINTENANCEORDERPLANNINGCODE TYPE STRING,
OPERATIONSYSTEMCONDITION TYPE STRING,
REFERENCEELEMENT TYPE STRING,
MAINTENANCEACTIVITYTYPE TYPE STRING,
CONTROLLINGAREA TYPE STRING,
COMPANYCODE TYPE STRING,
RESPONSIBLECOSTCENTER TYPE STRING,
CONTROLLINGOBJECTCLASS TYPE STRING,
PROFITCENTER TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
PROJECTINTERNALID TYPE STRING,
ORDERPROCESSINGGROUP TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
CREATEDBYUSER TYPE STRING,
MAINTORDERSOURCEAPPLICATION TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ORDERHASLONGTEXT TYPE STRING,
MAINTORDERISFINALLYCONFIRMED TYPE STRING,
MAINTORDHASOPENMAINWORK TYPE STRING,
TASKLISTGROUP TYPE STRING,
TASKLISTTYPE TYPE STRING,
TASKLISTGROUPCOUNTER TYPE STRING,
CURRENCY TYPE STRING,
MAINTORDPROCESSPHASECODE TYPE STRING,
MAINTORDPROCESSSUBPHASECODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
DUMMY_AFIH_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MAINTORDER_D_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_MAINTORDER_D_STR-MANDT sy-vline 
WA_MAINTORDER_D_STR-DRAFTUUID sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEORDER sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEORDERFOREDIT sy-vline 
WA_MAINTORDER_D_STR-TECHNICALOBJECT sy-vline 
WA_MAINTORDER_D_STR-TECHOBJISEQUIPORFUNCNLLOC sy-vline 
WA_MAINTORDER_D_STR-MAINTPRIORITYTYPE sy-vline 
WA_MAINTORDER_D_STR-MAINTPRIORITY sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEPROCESSINGPHASE sy-vline 
WA_MAINTORDER_D_STR-MAINTOBJECTLOCACCTASSGMTNMBR sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCENOTIFICATION sy-vline 
WA_MAINTORDER_D_STR-EQUIPMENT sy-vline 
WA_MAINTORDER_D_STR-FUNCTIONALLOCATION sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEITEM sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEPLANITEMINTID sy-vline 
WA_MAINTORDER_D_STR-ASSEMBLY sy-vline 
WA_MAINTORDER_D_STR-SERIALNUMBER sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEREVISION sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEPLAN sy-vline 
WA_MAINTORDER_D_STR-MAINTORDERROUTINGNUMBER sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEORDERTYPE sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEORDERCATEGORY sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEORDERDESC sy-vline 
WA_MAINTORDER_D_STR-BASICSCHEDULINGTYPE sy-vline 
WA_MAINTORDER_D_STR-ORDISNOTSCHEDLDAUTOMATICALLY sy-vline 
WA_MAINTORDER_D_STR-MAINTORDBASICSTARTDATE sy-vline 
WA_MAINTORDER_D_STR-MAINTORDBASICENDDATE sy-vline 
WA_MAINTORDER_D_STR-LATESTACCEPTABLECOMPLETIONDATE sy-vline 
WA_MAINTORDER_D_STR-SCHEDULEDBASICSTARTDATE sy-vline 
WA_MAINTORDER_D_STR-SCHEDULEDBASICSTARTTIME sy-vline 
WA_MAINTORDER_D_STR-SCHEDULEDBASICENDDATE sy-vline 
WA_MAINTORDER_D_STR-SCHEDULEDBASICENDTIME sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEORDERINTERNALID sy-vline 
WA_MAINTORDER_D_STR-WORKCENTERINTERNALID sy-vline 
WA_MAINTORDER_D_STR-WORKCENTERTYPECODE sy-vline 
WA_MAINTORDER_D_STR-BUSINESSAREA sy-vline 
WA_MAINTORDER_D_STR-MAINTORDMAINWORKCENTER sy-vline 
WA_MAINTORDER_D_STR-MAINTORDMAINWORKCENTERPLANT sy-vline 
WA_MAINTORDER_D_STR-MAINTORDPERSONRESPONSIBLE sy-vline 
WA_MAINTORDER_D_STR-MAINTORDERREFERENCEDATE sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEORDERPLANNINGCODE sy-vline 
WA_MAINTORDER_D_STR-OPERATIONSYSTEMCONDITION sy-vline 
WA_MAINTORDER_D_STR-REFERENCEELEMENT sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEACTIVITYTYPE sy-vline 
WA_MAINTORDER_D_STR-CONTROLLINGAREA sy-vline 
WA_MAINTORDER_D_STR-COMPANYCODE sy-vline 
WA_MAINTORDER_D_STR-RESPONSIBLECOSTCENTER sy-vline 
WA_MAINTORDER_D_STR-CONTROLLINGOBJECTCLASS sy-vline 
WA_MAINTORDER_D_STR-PROFITCENTER sy-vline 
WA_MAINTORDER_D_STR-WBSELEMENTINTERNALID sy-vline 
WA_MAINTORDER_D_STR-PROJECTINTERNALID sy-vline 
WA_MAINTORDER_D_STR-ORDERPROCESSINGGROUP sy-vline 
WA_MAINTORDER_D_STR-AUTHORIZATIONGROUP sy-vline 
WA_MAINTORDER_D_STR-MAINTENANCEPLANT sy-vline 
WA_MAINTORDER_D_STR-CREATEDBYUSER sy-vline 
WA_MAINTORDER_D_STR-MAINTORDERSOURCEAPPLICATION sy-vline 
WA_MAINTORDER_D_STR-CREATIONDATE sy-vline 
WA_MAINTORDER_D_STR-LASTCHANGEDATETIME sy-vline 
WA_MAINTORDER_D_STR-ORDERHASLONGTEXT sy-vline 
WA_MAINTORDER_D_STR-MAINTORDERISFINALLYCONFIRMED sy-vline 
WA_MAINTORDER_D_STR-MAINTORDHASOPENMAINWORK sy-vline 
WA_MAINTORDER_D_STR-TASKLISTGROUP sy-vline 
WA_MAINTORDER_D_STR-TASKLISTTYPE sy-vline 
WA_MAINTORDER_D_STR-TASKLISTGROUPCOUNTER sy-vline 
WA_MAINTORDER_D_STR-CURRENCY sy-vline 
WA_MAINTORDER_D_STR-MAINTORDPROCESSPHASECODE sy-vline 
WA_MAINTORDER_D_STR-MAINTORDPROCESSSUBPHASECODE sy-vline 
WA_MAINTORDER_D_STR-HASACTIVEENTITY sy-vline 
WA_MAINTORDER_D_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_MAINTORDER_D_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_MAINTORDER_D_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_MAINTORDER_D_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_MAINTORDER_D_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_MAINTORDER_D_STR-DUMMY_AFIH_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.