ABAP Select data from SAP table ISRSHMAINTSCHEDSMLTDOPTP1_D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISRSHMAINTSCHEDSMLTDOPTP1_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 ISRSHMAINTSCHEDSMLTDOPTP1_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 ISRSHMAINTSCHEDSMLTDOPTP1_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_ISRSHMAINTSCHEDSMLTDOPTP1_D TYPE STANDARD TABLE OF ISRSHMAINTSCHEDSMLTDOPTP1_D,
      WA_ISRSHMAINTSCHEDSMLTDOPTP1_D TYPE ISRSHMAINTSCHEDSMLTDOPTP1_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: <ISRSHMAINTSCHEDSMLTDOPTP1_D> TYPE ISRSHMAINTSCHEDSMLTDOPTP1_D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISRSHMAINTSCHEDSMLTDOPTP1_D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISRSHMAINTSCHEDSMLTDOPTP1_D
  INTO TABLE IT_ISRSHMAINTSCHEDSMLTDOPTP1_D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISRSHMAINTSCHEDSMLTDOPTP1_D
*  INTO TABLE @DATA(IT_ISRSHMAINTSCHEDSMLTDOPTP1_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_ISRSHMAINTSCHEDSMLTDOPTP1_D INDEX 1 INTO DATA(WA_ISRSHMAINTSCHEDSMLTDOPTP1_D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISRSHMAINTSCHEDSMLTDOPTP1_D ASSIGNING <ISRSHMAINTSCHEDSMLTDOPTP1_D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISRSHMAINTSCHEDSMLTDOPTP1_D>-MAINTORDERROUTINGNUMBER = 1.
<ISRSHMAINTSCHEDSMLTDOPTP1_D>-MAINTORDEROPERATIONCOUNTER = 1.
<ISRSHMAINTSCHEDSMLTDOPTP1_D>-MAINTORDOPSIMULATEDSTARTDATE = 1.
<ISRSHMAINTSCHEDSMLTDOPTP1_D>-MAINTORDOPSIMULATEDSTARTTIME = 1.
<ISRSHMAINTSCHEDSMLTDOPTP1_D>-MAINTORDOPSIMULATEDENDDATE = 1.

ENDLOOP.

LOOP AT IT_ISRSHMAINTSCHEDSMLTDOPTP1_D INTO WA_ISRSHMAINTSCHEDSMLTDOPTP1_D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISRSHMAINTSCHEDSMLTDOPTP1_D-MAINTORDOPSIMULATEDENDTIME, sy-vline,
  WA_ISRSHMAINTSCHEDSMLTDOPTP1_D-SIMULATEDWORKCENTERINTERNALID, sy-vline,
  WA_ISRSHMAINTSCHEDSMLTDOPTP1_D-SIMULATEDWORKCENTERTYPECODE, sy-vline,
  WA_ISRSHMAINTSCHEDSMLTDOPTP1_D-MAINTORDOPSIMULATIONSTATUS, sy-vline,
  WA_ISRSHMAINTSCHEDSMLTDOPTP1_D-MAINTORDERCONFIRMATION, sy-vline,
  WA_ISRSHMAINTSCHEDSMLTDOPTP1_D-MAINTORDOPSCHEDSIMULATIONMODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISRSHMAINTSCHEDSMLTDOPTP1_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_ISRSHMAINTSCHEDSMLTDOPTP1_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_ISRSHMAINTSCHEDSMLTDOPTP1_D INTO WA_ISRSHMAINTSCHEDSMLTDOPTP1_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.
ENDFORM. 

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

TYPES: BEGIN OF T_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR, 
MAINTORDERROUTINGNUMBER TYPE STRING,
MAINTORDEROPERATIONCOUNTER TYPE STRING,
MAINTORDOPSIMULATEDSTARTDATE TYPE STRING,
MAINTORDOPSIMULATEDSTARTTIME TYPE STRING,
MAINTORDOPSIMULATEDENDDATE TYPE STRING,
MAINTORDOPSIMULATEDENDTIME TYPE STRING,
SIMULATEDWORKCENTERINTERNALID TYPE STRING,
SIMULATEDWORKCENTERTYPECODE TYPE STRING,
MAINTORDOPSIMULATIONSTATUS TYPE STRING,
MAINTORDERCONFIRMATION TYPE STRING,
MAINTORDOPSCHEDSIMULATIONMODE TYPE STRING,
MAINTORDOPSCHEDWORK TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
SIMULATEDWORKCENTER TYPE STRING,
PROCESSINGSTATUS TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
OPERATIONISDUE TYPE STRING,
USERISASSIGNEDTOOPWRKCTR TYPE STRING,
USERISASSIGNEDTOOPSIMWRKCTR TYPE STRING,
MAINTSCHEDCOLLABORATORTYPE TYPE STRING,
FORCESCHEDULINGSIMULATION TYPE STRING,
MAINTORDOPHASTOSCHEDULEAUTOM TYPE STRING,
MAINTORDOPHASTORESPECTSETSTART TYPE STRING,
MAINTSCHEDSETSTARTISTIMEBASED TYPE STRING,
SIMULATIONSESSIONSTATE TYPE STRING,
SITNINSTCEANCHOROBJECTKEY TYPE STRING,
MAINTENANCEORDERINTERNALID TYPE STRING,
MAINTORDEROPERATIONINTERNALID TYPE STRING,
OPERATIONHASLONGTEXT TYPE STRING,
OPERATIONPERSONRESPONSIBLE TYPE STRING,
MATERIALSTATUS TYPE STRING,
MAINTOPERATIONEXECSTAGECODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISRSHMAINTSCHEDSMLTDOPTP1_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_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDERROUTINGNUMBER sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDEROPERATIONCOUNTER sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPSIMULATEDSTARTDATE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPSIMULATEDSTARTTIME sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPSIMULATEDENDDATE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPSIMULATEDENDTIME sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-SIMULATEDWORKCENTERINTERNALID sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-SIMULATEDWORKCENTERTYPECODE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPSIMULATIONSTATUS sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDERCONFIRMATION sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPSCHEDSIMULATIONMODE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPSCHEDWORK sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-LASTCHANGEDATETIME sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-SIMULATEDWORKCENTER sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-PROCESSINGSTATUS sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-WORKCENTERINTERNALID sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-WORKCENTERTYPECODE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-OPERATIONISDUE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-USERISASSIGNEDTOOPWRKCTR sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-USERISASSIGNEDTOOPSIMWRKCTR sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTSCHEDCOLLABORATORTYPE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-FORCESCHEDULINGSIMULATION sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPHASTOSCHEDULEAUTOM sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDOPHASTORESPECTSETSTART sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTSCHEDSETSTARTISTIMEBASED sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-SIMULATIONSESSIONSTATE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-SITNINSTCEANCHOROBJECTKEY sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTENANCEORDERINTERNALID sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTORDEROPERATIONINTERNALID sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-OPERATIONHASLONGTEXT sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-OPERATIONPERSONRESPONSIBLE sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MATERIALSTATUS sy-vline 
WA_ISRSHMAINTSCHEDSMLTDOPTP1_D_STR-MAINTOPERATIONEXECSTAGECODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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