ABAP Select data from SAP table EAM_MJP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EAM_MJP 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_MJP. 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_MJP 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_MJP TYPE STANDARD TABLE OF EAM_MJP,
      WA_EAM_MJP TYPE EAM_MJP,
      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_MJP> TYPE EAM_MJP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAM_MJP
*  INTO TABLE @DATA(IT_EAM_MJP2).
*--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_MJP INDEX 1 INTO DATA(WA_EAM_MJP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAM_MJP>-MANDT = 1.
<EAM_MJP>-MAINTENANCEJOBPACKAGEUUID = 1.
<EAM_MJP>-MAINTENANCEJOBPACKAGEBUILDUUID = 1.
<EAM_MJP>-MAINTENANCEJOBPACKAGEPOSITION = 1.
<EAM_MJP>-MAINTENANCEJOBPACKAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAM_MJP-MAINTENANCEJOBPACKAGEASSEMBLY, sy-vline,
  WA_EAM_MJP-MAINTJOBPCKGBUSINESSAREA, sy-vline,
  WA_EAM_MJP-MAINTJOBPCKGEQUIPMENT, sy-vline,
  WA_EAM_MJP-MAINTJOBPCKGEQUIPCATEGORY, sy-vline,
  WA_EAM_MJP-MAINTJOBPCKGFUNCLOCATION, sy-vline,
  WA_EAM_MJP-MAINTJOBPCKGFUNCLOCCAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAM_MJP 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_MJP 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_MJP INTO WA_EAM_MJP.


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

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

*Conversion exit TPLNR, internal->external for field MAINTJOBPCKGFUNCLOCATION
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_EAM_MJP-MAINTJOBPCKGFUNCLOCATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAM_MJP-MAINTJOBPCKGFUNCLOCATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINTJOBPCKGOPSEQUIPMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EAM_MJP-MAINTJOBPCKGOPSEQUIPMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAM_MJP-MAINTJOBPCKGOPSEQUIPMENT.
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_EAM_MJP_STR, 
MANDT TYPE STRING,
MAINTENANCEJOBPACKAGEUUID TYPE STRING,
MAINTENANCEJOBPACKAGEBUILDUUID TYPE STRING,
MAINTENANCEJOBPACKAGEPOSITION TYPE STRING,
MAINTENANCEJOBPACKAGE TYPE STRING,
MAINTENANCEJOBPACKAGEASSEMBLY TYPE STRING,
MAINTJOBPCKGBUSINESSAREA TYPE STRING,
MAINTJOBPCKGEQUIPMENT TYPE STRING,
MAINTJOBPCKGEQUIPCATEGORY TYPE STRING,
MAINTJOBPCKGFUNCLOCATION TYPE STRING,
MAINTJOBPCKGFUNCLOCCAT TYPE STRING,
MAINTJOBPCKGPLANTSECTION TYPE STRING,
MAINTJOBPCKGORDERTYPE TYPE STRING,
MAINTJOBPCKGACTIVITYTYPE TYPE STRING,
MAINTJOBPCKGPLANNERGROUP TYPE STRING,
MAINTJOBPCKGPLANNINGPLANT TYPE STRING,
MAINTJOBPCKGMAINTPLANT TYPE STRING,
MAINTJOBPCKGMAINTPRIORITY TYPE STRING,
MAINTJOBPCKGMAINWORKCENTER TYPE STRING,
MAINTJOBPCKGORDSPROCPHASE TYPE STRING,
MAINTJOBPCKGORDSPROCSUBPHASE TYPE STRING,
MAINTJOBPCKGOPSCONTROLKEY TYPE STRING,
MAINTJOBPCKGOPSWORKCENTER TYPE STRING,
MAINTJOBPCKGOPSACTIVITYTYPE TYPE STRING,
MAINTJOBPCKGOPSPROCESSPHASE TYPE STRING,
MAINTJOBPCKGOPSPROCESSSUBPHASE TYPE STRING,
MAINTJOBPCKGOPSFUNCLOCATION TYPE STRING,
MAINTJOBPCKGOPSFUNCLOCCATEGORY TYPE STRING,
MAINTJOBPCKGOPSEQUIPMENT TYPE STRING,
MAINTJOBPCKGOPSEQUIPCATEGORY TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAM_MJP_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_MJP_STR-MANDT sy-vline 
WA_EAM_MJP_STR-MAINTENANCEJOBPACKAGEUUID sy-vline 
WA_EAM_MJP_STR-MAINTENANCEJOBPACKAGEBUILDUUID sy-vline 
WA_EAM_MJP_STR-MAINTENANCEJOBPACKAGEPOSITION sy-vline 
WA_EAM_MJP_STR-MAINTENANCEJOBPACKAGE sy-vline 
WA_EAM_MJP_STR-MAINTENANCEJOBPACKAGEASSEMBLY sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGBUSINESSAREA sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGEQUIPMENT sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGEQUIPCATEGORY sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGFUNCLOCATION sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGFUNCLOCCAT sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGPLANTSECTION sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGORDERTYPE sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGACTIVITYTYPE sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGPLANNERGROUP sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGPLANNINGPLANT sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGMAINTPLANT sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGMAINTPRIORITY sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGMAINWORKCENTER sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGORDSPROCPHASE sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGORDSPROCSUBPHASE sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSCONTROLKEY sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSWORKCENTER sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSACTIVITYTYPE sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSPROCESSPHASE sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSPROCESSSUBPHASE sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSFUNCLOCATION sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSFUNCLOCCATEGORY sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSEQUIPMENT sy-vline 
WA_EAM_MJP_STR-MAINTJOBPCKGOPSEQUIPCATEGORY sy-vline 
WA_EAM_MJP_STR-CREATIONDATETIME sy-vline 
WA_EAM_MJP_STR-CREATEDBYUSER sy-vline 
WA_EAM_MJP_STR-LASTCHANGEDATETIME sy-vline 
WA_EAM_MJP_STR-LASTCHANGEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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