ABAP Select data from SAP table IFLPR_MAINTORD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFLPR_MAINTORD
*  INTO TABLE @DATA(IT_IFLPR_MAINTORD2).
*--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_IFLPR_MAINTORD INDEX 1 INTO DATA(WA_IFLPR_MAINTORD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFLPR_MAINTORD>-MANDT = 1.
<IFLPR_MAINTORD>-RESERVATION = 1.
<IFLPR_MAINTORD>-RESERVATIONITEM = 1.
<IFLPR_MAINTORD>-RESERVATIONTYPE = 1.
<IFLPR_MAINTORD>-PURCHASEREQUISITION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFLPR_MAINTORD-PURCHASEREQUISITIONITEM, sy-vline,
  WA_IFLPR_MAINTORD-FLDLOGSSUPPLYPROCESS, sy-vline,
  WA_IFLPR_MAINTORD-FLDLOGSDELIVISHELDONSHORE, sy-vline,
  WA_IFLPR_MAINTORD-MAINTENANCEORDER, sy-vline,
  WA_IFLPR_MAINTORD-MAINTPRIORITY, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_IFLPR_MAINTORD 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_IFLPR_MAINTORD 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_IFLPR_MAINTORD INTO WA_IFLPR_MAINTORD.


*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 PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IFLPR_MAINTORD-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFLPR_MAINTORD-PURCHASEREQUISITION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINTENANCEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IFLPR_MAINTORD-MAINTENANCEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFLPR_MAINTORD-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_IFLPR_MAINTORD_STR, 
MANDT TYPE STRING,
RESERVATION TYPE STRING,
RESERVATIONITEM TYPE STRING,
RESERVATIONTYPE TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
FLDLOGSSUPPLYPROCESS TYPE STRING,
FLDLOGSDELIVISHELDONSHORE TYPE STRING,
MAINTENANCEORDER TYPE STRING,
MAINTPRIORITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFLPR_MAINTORD_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_IFLPR_MAINTORD_STR-MANDT sy-vline 
WA_IFLPR_MAINTORD_STR-RESERVATION sy-vline 
WA_IFLPR_MAINTORD_STR-RESERVATIONITEM sy-vline 
WA_IFLPR_MAINTORD_STR-RESERVATIONTYPE sy-vline 
WA_IFLPR_MAINTORD_STR-PURCHASEREQUISITION sy-vline 
WA_IFLPR_MAINTORD_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_IFLPR_MAINTORD_STR-FLDLOGSSUPPLYPROCESS sy-vline 
WA_IFLPR_MAINTORD_STR-FLDLOGSDELIVISHELDONSHORE sy-vline 
WA_IFLPR_MAINTORD_STR-MAINTENANCEORDER sy-vline 
WA_IFLPR_MAINTORD_STR-MAINTPRIORITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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