ABAP Select data from SAP table CMAINTJOBWRKITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMAINTJOBWRKITM
*  INTO TABLE @DATA(IT_CMAINTJOBWRKITM2).
*--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_CMAINTJOBWRKITM INDEX 1 INTO DATA(WA_CMAINTJOBWRKITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMAINTJOBWRKITM>-MANDT = 1.
<CMAINTJOBWRKITM>-MAINTENANCEORDER = 1.
<CMAINTJOBWRKITM>-MAINTENANCEORDEROPERATION = 1.
<CMAINTJOBWRKITM>-MAINTENANCEORDERSUBOPERATION = 1.
<CMAINTJOBWRKITM>-MAINTENANCEORDERTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMAINTJOBWRKITM-MAINTORDBASICSTARTDATE, sy-vline,
  WA_CMAINTJOBWRKITM-MAINTORDBASICENDDATE, sy-vline,
  WA_CMAINTJOBWRKITM-SCHEDULEDBASICSTARTDATE, sy-vline,
  WA_CMAINTJOBWRKITM-SCHEDULEDBASICSTARTTIME, sy-vline,
  WA_CMAINTJOBWRKITM-SCHEDULEDBASICENDDATE, sy-vline,
  WA_CMAINTJOBWRKITM-SCHEDULEDBASICENDTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMAINTJOBWRKITM 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_CMAINTJOBWRKITM 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_CMAINTJOBWRKITM INTO WA_CMAINTJOBWRKITM.


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

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

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

*Conversion exit TECHO, internal->external for field TECHNICALOBJECTLABEL
CALL FUNCTION 'CONVERSION_EXIT_TECHO_OUTPUT'
  EXPORTING
    input =                      WA_CMAINTJOBWRKITM-TECHNICALOBJECTLABEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMAINTJOBWRKITM-TECHNICALOBJECTLABEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUIPMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMAINTJOBWRKITM-EQUIPMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMAINTJOBWRKITM-EQUIPMENT.
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_CMAINTJOBWRKITM_STR, 
MANDT TYPE STRING,
MAINTENANCEORDER TYPE STRING,
MAINTENANCEORDEROPERATION TYPE STRING,
MAINTENANCEORDERSUBOPERATION TYPE STRING,
MAINTENANCEORDERTYPE TYPE STRING,
MAINTORDBASICSTARTDATE TYPE STRING,
MAINTORDBASICENDDATE TYPE STRING,
SCHEDULEDBASICSTARTDATE TYPE STRING,
SCHEDULEDBASICSTARTTIME TYPE STRING,
SCHEDULEDBASICENDDATE TYPE STRING,
SCHEDULEDBASICENDTIME TYPE STRING,
MAINTORDOPPROCESSPHASECODE TYPE STRING,
MAINTORDOPPROCESSSUBPHASECODE TYPE STRING,
LATESTACCEPTABLECOMPLETIONDATE TYPE STRING,
ISFINALLYCONFIRMED TYPE STRING,
MAINTORDEROPERATIONISINPROCESS TYPE STRING,
OPERLSTSCHEDLDEXECSTRTDTE TYPE STRING,
OPERLSTSCHEDLDEXECSTRTTME TYPE STRING,
OPERLSTSCHEDLDEXECSTRTDTETME TYPE STRING,
OPERLSTSCHEDLDEXECENDDTE TYPE STRING,
OPERLSTSCHEDLDEXECENDTME TYPE STRING,
OPERLSTSCHEDLDEXECENDDTETME TYPE STRING,
OPLTSTSCHEDLDEXECSTRTDTE TYPE STRING,
OPLTSTSCHEDLDEXECSTRTTME TYPE STRING,
OPLTSTSCHEDLDEXECSTRTDTETME TYPE STRING,
OPLTSTSCHEDLDEXECENDDTE TYPE STRING,
OPLTSTSCHEDLDEXECENDTME TYPE STRING,
OPLTSTSCHEDLDEXECENDDTETME TYPE STRING,
FORECASTEDWORKQTY TYPE STRING,
CONFIRMATIONTOTALQUANTITY TYPE STRING,
REMAININGWORKQUANTITY TYPE STRING,
MAINTOPERATIONEXECSTAGECODE TYPE STRING,
MAINTOPEXECUTIONSTAGENAME TYPE STRING,
MAINTOPEXECSTAGESHORTTEXT TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
MAINTENANCEORDERINTERNALID TYPE STRING,
MAINTENANCEORDERDESC TYPE STRING,
MAINTENANCENOTIFICATION TYPE STRING,
NOTIFICATIONTEXT TYPE STRING,
OPERATIONDESCRIPTION TYPE STRING,
OPERATIONPERSONRESPONSIBLE TYPE STRING,
OPERATIONPERSONRESPNAME TYPE STRING,
USERISPERSONRESPONSIBLE TYPE STRING,
CONFIRMATIONISNOTPOSSIBLE TYPE STRING,
OPERATIONISPROCESSEDINTERNALLY TYPE STRING,
OPERATIONWORKCENTER TYPE STRING,
OPERATIONWORKCENTERINTERNALID TYPE STRING,
OPERATIONWORKCENTERTYPECODE TYPE STRING,
OPERATIONPLANNEDWORK TYPE STRING,
OPERATIONPLANNEDWORKUNIT TYPE STRING,
PLANT TYPE STRING,
MAINTORDERSOURCEAPPLICATION TYPE STRING,
MAINTENANCEJOBSELECTION TYPE STRING,
MAINTPRIORITYCOLORCODE TYPE STRING,
MAINTPRIORITY TYPE STRING,
MAINTPRIORITYDESC TYPE STRING,
MAINTPRIORITYTYPE TYPE STRING,
MAINTPRIORITYTYPEDESC TYPE STRING,
ISACTIVEENTITY TYPE STRING,
DRAFTUUID TYPE STRING,
MAINTORDEROPERATIONINTERNALID TYPE STRING,
TECHNICALOBJECTLABEL TYPE STRING,
TECHNICALOBJECT TYPE STRING,
TECHOBJISEQUIPORFUNCNLLOC TYPE STRING,
TECHOBJISEQUIPORFUNCNLLOCDESC TYPE STRING,
EQUIPMENT TYPE STRING,
FUNCTIONALLOCATIONLABELNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMAINTJOBWRKITM_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_CMAINTJOBWRKITM_STR-MANDT sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCEORDER sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCEORDEROPERATION sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCEORDERSUBOPERATION sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCEORDERTYPE sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTORDBASICSTARTDATE sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTORDBASICENDDATE sy-vline 
WA_CMAINTJOBWRKITM_STR-SCHEDULEDBASICSTARTDATE sy-vline 
WA_CMAINTJOBWRKITM_STR-SCHEDULEDBASICSTARTTIME sy-vline 
WA_CMAINTJOBWRKITM_STR-SCHEDULEDBASICENDDATE sy-vline 
WA_CMAINTJOBWRKITM_STR-SCHEDULEDBASICENDTIME sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTORDOPPROCESSPHASECODE sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTORDOPPROCESSSUBPHASECODE sy-vline 
WA_CMAINTJOBWRKITM_STR-LATESTACCEPTABLECOMPLETIONDATE sy-vline 
WA_CMAINTJOBWRKITM_STR-ISFINALLYCONFIRMED sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTORDEROPERATIONISINPROCESS sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERLSTSCHEDLDEXECSTRTDTE sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERLSTSCHEDLDEXECSTRTTME sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERLSTSCHEDLDEXECSTRTDTETME sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERLSTSCHEDLDEXECENDDTE sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERLSTSCHEDLDEXECENDTME sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERLSTSCHEDLDEXECENDDTETME sy-vline 
WA_CMAINTJOBWRKITM_STR-OPLTSTSCHEDLDEXECSTRTDTE sy-vline 
WA_CMAINTJOBWRKITM_STR-OPLTSTSCHEDLDEXECSTRTTME sy-vline 
WA_CMAINTJOBWRKITM_STR-OPLTSTSCHEDLDEXECSTRTDTETME sy-vline 
WA_CMAINTJOBWRKITM_STR-OPLTSTSCHEDLDEXECENDDTE sy-vline 
WA_CMAINTJOBWRKITM_STR-OPLTSTSCHEDLDEXECENDTME sy-vline 
WA_CMAINTJOBWRKITM_STR-OPLTSTSCHEDLDEXECENDDTETME sy-vline 
WA_CMAINTJOBWRKITM_STR-FORECASTEDWORKQTY sy-vline 
WA_CMAINTJOBWRKITM_STR-CONFIRMATIONTOTALQUANTITY sy-vline 
WA_CMAINTJOBWRKITM_STR-REMAININGWORKQUANTITY sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTOPERATIONEXECSTAGECODE sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTOPEXECUTIONSTAGENAME sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTOPEXECSTAGESHORTTEXT sy-vline 
WA_CMAINTJOBWRKITM_STR-CAPACITYREQUIREMENT sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCEORDERINTERNALID sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCEORDERDESC sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCENOTIFICATION sy-vline 
WA_CMAINTJOBWRKITM_STR-NOTIFICATIONTEXT sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONDESCRIPTION sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONPERSONRESPONSIBLE sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONPERSONRESPNAME sy-vline 
WA_CMAINTJOBWRKITM_STR-USERISPERSONRESPONSIBLE sy-vline 
WA_CMAINTJOBWRKITM_STR-CONFIRMATIONISNOTPOSSIBLE sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONISPROCESSEDINTERNALLY sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONWORKCENTER sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONWORKCENTERINTERNALID sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONWORKCENTERTYPECODE sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONPLANNEDWORK sy-vline 
WA_CMAINTJOBWRKITM_STR-OPERATIONPLANNEDWORKUNIT sy-vline 
WA_CMAINTJOBWRKITM_STR-PLANT sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTORDERSOURCEAPPLICATION sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTENANCEJOBSELECTION sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTPRIORITYCOLORCODE sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTPRIORITY sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTPRIORITYDESC sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTPRIORITYTYPE sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTPRIORITYTYPEDESC sy-vline 
WA_CMAINTJOBWRKITM_STR-ISACTIVEENTITY sy-vline 
WA_CMAINTJOBWRKITM_STR-DRAFTUUID sy-vline 
WA_CMAINTJOBWRKITM_STR-MAINTORDEROPERATIONINTERNALID sy-vline 
WA_CMAINTJOBWRKITM_STR-TECHNICALOBJECTLABEL sy-vline 
WA_CMAINTJOBWRKITM_STR-TECHNICALOBJECT sy-vline 
WA_CMAINTJOBWRKITM_STR-TECHOBJISEQUIPORFUNCNLLOC sy-vline 
WA_CMAINTJOBWRKITM_STR-TECHOBJISEQUIPORFUNCNLLOCDESC sy-vline 
WA_CMAINTJOBWRKITM_STR-EQUIPMENT sy-vline 
WA_CMAINTJOBWRKITM_STR-FUNCTIONALLOCATIONLABELNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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