ABAP Select data from SAP table IFLMAINTORDER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFLMAINTORDER
*  INTO TABLE @DATA(IT_IFLMAINTORDER2).
*--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_IFLMAINTORDER INDEX 1 INTO DATA(WA_IFLMAINTORDER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFLMAINTORDER>-MANDT = 1.
<IFLMAINTORDER>-MAINTENANCEORDER = 1.
<IFLMAINTORDER>-MAINTENANCEORDEROPERATION = 1.
<IFLMAINTORDER>-MAINTENANCEORDERCOMPONENT = 1.
<IFLMAINTORDER>-MAINTENANCEORDERDESC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFLMAINTORDER-OPERATIONDESCRIPTION, sy-vline,
  WA_IFLMAINTORDER-COMPONENTDESCRIPTION, sy-vline,
  WA_IFLMAINTORDER-MATERIAL, sy-vline,
  WA_IFLMAINTORDER-MAINTENANCEPLANNINGPLANT, sy-vline,
  WA_IFLMAINTORDER-PLANTNAME, sy-vline,
  WA_IFLMAINTORDER-WORKCENTERINTERNALID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFLMAINTORDER 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_IFLMAINTORDER 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_IFLMAINTORDER INTO WA_IFLMAINTORDER.


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

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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IFLMAINTORDER-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFLMAINTORDER-BASEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IFLMAINTORDER-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFLMAINTORDER-PURCHASEREQUISITION.
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_IFLMAINTORDER_STR, 
MANDT TYPE STRING,
MAINTENANCEORDER TYPE STRING,
MAINTENANCEORDEROPERATION TYPE STRING,
MAINTENANCEORDERCOMPONENT TYPE STRING,
MAINTENANCEORDERDESC TYPE STRING,
OPERATIONDESCRIPTION TYPE STRING,
COMPONENTDESCRIPTION TYPE STRING,
MATERIAL TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
PLANTNAME TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
MAINTENANCEORDERTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
MAINTENANCEPROCESSINGPHASE TYPE STRING,
RESERVATION TYPE STRING,
RESERVATIONITEM TYPE STRING,
REQUIREMENTQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
REFPURCHASEREQUISITIONITEM TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,
DOCISPURCHASEREQN TYPE STRING,
DOCISSTOCKTRANSPORTREQN TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
FLDLOGSDELIVISHELDONSHORE TYPE STRING,
FLDLOGSSUPPLYPROCESS TYPE STRING,
FLDLOGSSUPPLYINGPLANT TYPE STRING,
FLDLOGSSUPPLYPROCESSTEXT TYPE STRING,
MATERIALNAME TYPE STRING,
SUPPLYINGPLANTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFLMAINTORDER_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_IFLMAINTORDER_STR-MANDT sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEORDER sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEORDEROPERATION sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEORDERCOMPONENT sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEORDERDESC sy-vline 
WA_IFLMAINTORDER_STR-OPERATIONDESCRIPTION sy-vline 
WA_IFLMAINTORDER_STR-COMPONENTDESCRIPTION sy-vline 
WA_IFLMAINTORDER_STR-MATERIAL sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_IFLMAINTORDER_STR-PLANTNAME sy-vline 
WA_IFLMAINTORDER_STR-WORKCENTERINTERNALID sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEORDERTYPE sy-vline 
WA_IFLMAINTORDER_STR-COMPANYCODE sy-vline 
WA_IFLMAINTORDER_STR-MAINTENANCEPROCESSINGPHASE sy-vline 
WA_IFLMAINTORDER_STR-RESERVATION sy-vline 
WA_IFLMAINTORDER_STR-RESERVATIONITEM sy-vline 
WA_IFLMAINTORDER_STR-REQUIREMENTQUANTITYINBASEUNIT sy-vline 
WA_IFLMAINTORDER_STR-BASEUNIT sy-vline 
WA_IFLMAINTORDER_STR-REFERENCEDOCUMENT sy-vline 
WA_IFLMAINTORDER_STR-REFPURCHASEREQUISITIONITEM sy-vline 
WA_IFLMAINTORDER_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_IFLMAINTORDER_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_IFLMAINTORDER_STR-ISENDOFPURPOSEBLOCKED sy-vline 
WA_IFLMAINTORDER_STR-DOCISPURCHASEREQN sy-vline 
WA_IFLMAINTORDER_STR-DOCISSTOCKTRANSPORTREQN sy-vline 
WA_IFLMAINTORDER_STR-PURCHASEREQUISITION sy-vline 
WA_IFLMAINTORDER_STR-FLDLOGSDELIVISHELDONSHORE sy-vline 
WA_IFLMAINTORDER_STR-FLDLOGSSUPPLYPROCESS sy-vline 
WA_IFLMAINTORDER_STR-FLDLOGSSUPPLYINGPLANT sy-vline 
WA_IFLMAINTORDER_STR-FLDLOGSSUPPLYPROCESSTEXT sy-vline 
WA_IFLMAINTORDER_STR-MATERIALNAME sy-vline 
WA_IFLMAINTORDER_STR-SUPPLYINGPLANTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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