ABAP Select data from SAP table EAM_MAINTENANCE_PLAN_ERPUPDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAM_MAINTENANCE_PLAN_ERPUPDATE
*  INTO TABLE @DATA(IT_EAM_MAINTENANCE_PLAN_ERPUPDATE2).
*--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_EAM_MAINTENANCE_PLAN_ERPUPDATE INDEX 1 INTO DATA(WA_EAM_MAINTENANCE_PLAN_ERPUPDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAM_MAINTENANCE_PLAN_ERPUPDATE>-CONTROLLER = 1.
<EAM_MAINTENANCE_PLAN_ERPUPDATE>-MAINTENANCE_PLAN_ERPUPDATE_RE = 1.
<EAM_MAINTENANCE_PLAN_ERPUPDATE>-CONTROLLER = 1.
<EAM_MAINTENANCE_PLAN_ERPUPDATE>-MESSAGE_HEADER = 1.
<EAM_MAINTENANCE_PLAN_ERPUPDATE>-CONTROLLER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAM_MAINTENANCE_PLAN_ERPUPDATE-ID, sy-vline,
  WA_EAM_MAINTENANCE_PLAN_ERPUPDATE-CONTROLLER, sy-vline,
  WA_EAM_MAINTENANCE_PLAN_ERPUPDATE-SCHEME_ID, sy-vline,
  WA_EAM_MAINTENANCE_PLAN_ERPUPDATE-SCHEME_AGENCY_ID, sy-vline,
  WA_EAM_MAINTENANCE_PLAN_ERPUPDATE-SCHEME_AGENCY_SCHEME_AGENCY_ID, sy-vline,
  WA_EAM_MAINTENANCE_PLAN_ERPUPDATE-CONTENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAM_MAINTENANCE_PLAN_ERPUPDATE 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_EAM_MAINTENANCE_PLAN_ERPUPDATE 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_EAM_MAINTENANCE_PLAN_ERPUPDATE INTO WA_EAM_MAINTENANCE_PLAN_ERPUPDATE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR, 
CONTROLLER TYPE STRING,
MAINTENANCE_PLAN_ERPUPDATE_RE TYPE STRING,
CONTROLLER TYPE STRING,
MESSAGE_HEADER TYPE STRING,
CONTROLLER TYPE STRING,
ID TYPE STRING,
CONTROLLER TYPE STRING,
SCHEME_ID TYPE STRING,
SCHEME_AGENCY_ID TYPE STRING,
SCHEME_AGENCY_SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
UUID TYPE STRING,
REFERENCE_ID TYPE STRING,
CONTROLLER TYPE STRING,
SCHEME_ID TYPE STRING,
SCHEME_AGENCY_ID TYPE STRING,
SCHEME_AGENCY_SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
REFERENCE_UUID TYPE STRING,
MAINTENANCE_PLAN TYPE STRING,
CONTROLLER TYPE STRING,
ID TYPE STRING,
CONTROLLER TYPE STRING,
SCHEME_ID TYPE STRING,
SCHEME_VERSION_ID TYPE STRING,
SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
CHANGE_STATE_ID TYPE STRING,
DESCRIPTION TYPE STRING,
CONTROLLER TYPE STRING,
LANGUAGE_CODE TYPE STRING,
CONTENT TYPE STRING,
TEXT_COLLECTION TYPE STRING,
CONTROLLER TYPE STRING,
TEXT TYPE STRING,
ACTION_CODE TYPE STRING,
SCHEDULING_TERMS TYPE STRING,
CONTROLLER TYPE STRING,
START_DATE_TIME TYPE STRING,
MEASURING_DEVICE_START_MEASUR TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
LATE_COMPLETION_SHIFT_PERCENT TYPE STRING,
EARLY_COMPLETION_SHIFT_PERCENT TYPE STRING,
LATE_COMPLETION_TOLERENCE_PER TYPE STRING,
EARLY_COMPLETION_TOLERENCE_PE TYPE STRING,
WORKING_DAY_CALENDAR_CODE TYPE STRING,
CONTROLLER TYPE STRING,
LIST_ID TYPE STRING,
LIST_VERSION_ID TYPE STRING,
LIST_AGENCY_ID TYPE STRING,
LIST_AGENCY_SCHEME_ID TYPE STRING,
LIST_AGENCY_SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
MAINTENANCE_PLAN_CYCLE_MODIFI TYPE STRING,
BUFFER_START_DAYS_NUMBER_VALUE TYPE STRING,
CALL_HORIZON_PERCENT TYPE STRING,
PREDECESSOR_COMPLETION_REQUIR TYPE STRING,
SCHEDULING_DURATION TYPE STRING,
SCHEDULING_TYPE_CODE TYPE STRING,
CYCLE_DEPENDENCY_INDICATOR TYPE STRING,
CYCLE TYPE STRING,
ITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_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_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-MAINTENANCE_PLAN_ERPUPDATE_RE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-MESSAGE_HEADER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_AGENCY_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_AGENCY_SCHEME_AGENCY_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-UUID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-REFERENCE_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_AGENCY_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_AGENCY_SCHEME_AGENCY_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-REFERENCE_UUID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-MAINTENANCE_PLAN sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_VERSION_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEME_AGENCY_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CHANGE_STATE_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-DESCRIPTION sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LANGUAGE_CODE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-TEXT_COLLECTION sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-TEXT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-ACTION_CODE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEDULING_TERMS sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-START_DATE_TIME sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-MEASURING_DEVICE_START_MEASUR sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-UNIT_CODE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LATE_COMPLETION_SHIFT_PERCENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-EARLY_COMPLETION_SHIFT_PERCENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LATE_COMPLETION_TOLERENCE_PER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-EARLY_COMPLETION_TOLERENCE_PE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-WORKING_DAY_CALENDAR_CODE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTROLLER sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LIST_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LIST_VERSION_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LIST_AGENCY_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LIST_AGENCY_SCHEME_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-LIST_AGENCY_SCHEME_AGENCY_ID sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CONTENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-MAINTENANCE_PLAN_CYCLE_MODIFI sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-BUFFER_START_DAYS_NUMBER_VALUE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CALL_HORIZON_PERCENT sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-PREDECESSOR_COMPLETION_REQUIR sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEDULING_DURATION sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-SCHEDULING_TYPE_CODE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CYCLE_DEPENDENCY_INDICATOR sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-CYCLE sy-vline 
WA_EAM_MAINTENANCE_PLAN_ERPUPDATE_STR-ITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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