ABAP Select data from SAP table ESH_L_FUNCTLOCTN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_L_FUNCTLOCTN
*  INTO TABLE @DATA(IT_ESH_L_FUNCTLOCTN2).
*--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_ESH_L_FUNCTLOCTN INDEX 1 INTO DATA(WA_ESH_L_FUNCTLOCTN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_L_FUNCTLOCTN>-MANDT = 1.
<ESH_L_FUNCTLOCTN>-FUNCTIONALLOCATION = 1.
<ESH_L_FUNCTLOCTN>-FUNCLOCATIONSTRUCTUREDESC = 1.
<ESH_L_FUNCTLOCTN>-TECHNICALOBJECTTYPEDESC = 1.
<ESH_L_FUNCTLOCTN>-MAINTPLANTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_L_FUNCTLOCTN-COSTCENTERNAME, sy-vline,
  WA_ESH_L_FUNCTLOCTN-PRODWORKCENTER, sy-vline,
  WA_ESH_L_FUNCTLOCTN-MAINTENANCEOBJECTLOCATION, sy-vline,
  WA_ESH_L_FUNCTLOCTN-ABCINDICATOR, sy-vline,
  WA_ESH_L_FUNCTLOCTN-COSTCENTER, sy-vline,
  WA_ESH_L_FUNCTLOCTN-MAINTOBJECTFREEDEFINEDATTRIB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_L_FUNCTLOCTN 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_ESH_L_FUNCTLOCTN 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_ESH_L_FUNCTLOCTN INTO WA_ESH_L_FUNCTLOCTN.


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

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

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

*Conversion exit MATN1, internal->external for field CONSTRUCTIONMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_FUNCTLOCTN-CONSTRUCTIONMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_FUNCTLOCTN-CONSTRUCTIONMATERIAL.
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_ESH_L_FUNCTLOCTN_STR, 
MANDT TYPE STRING,
FUNCTIONALLOCATION TYPE STRING,
FUNCLOCATIONSTRUCTUREDESC TYPE STRING,
TECHNICALOBJECTTYPEDESC TYPE STRING,
MAINTPLANTNAME TYPE STRING,
COSTCENTERNAME TYPE STRING,
PRODWORKCENTER TYPE STRING,
MAINTENANCEOBJECTLOCATION TYPE STRING,
ABCINDICATOR TYPE STRING,
COSTCENTER TYPE STRING,
MAINTOBJECTFREEDEFINEDATTRIB TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
MAINTENANCEPLANNERGROUPNAME TYPE STRING,
PLANNINGPLANTNAME TYPE STRING,
MAINTWORKCENTER TYPE STRING,
FUNCTIONALLOCATIONCATEGORYDESC TYPE STRING,
FUNCTIONALLOCATIONNAME TYPE STRING,
FUNCNLLOCPRIMARYLABELNAME TYPE STRING,
TECHNICALOBJECTTYPE TYPE STRING,
FUNCTIONALLOCATIONCATEGORY TYPE STRING,
ASSETMANUFACTURERNAME TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
FUNCLOCATIONSTRUCTURE TYPE STRING,
PLAINLONGTEXT TYPE STRING,
CONTROLLINGAREA TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
SUPERIORFLOCNAME TYPE STRING,
SUPERIORFUNCTIONALLOCATION TYPE STRING,
MAINTOBJECTLOCACCTASSGMTNMBR TYPE STRING,
CONSTRUCTIONMATERIAL TYPE STRING,
CHARCVALUE TYPE STRING,
CHARCVALUEDESCRIPTION TYPE STRING,
CHARCFROMNUMERICVALUE TYPE STRING,
CHARCTONUMERICVALUE TYPE STRING,
CLASSTYPE TYPE STRING,
CLASS TYPE STRING,
CLASSINTERNALID TYPE STRING,
CLASSDESCRIPTION TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARCDESCRIPTION TYPE STRING,
MAINTOBJECTINTERNALID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_L_FUNCTLOCTN_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_ESH_L_FUNCTLOCTN_STR-MANDT sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-FUNCTIONALLOCATION sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-FUNCLOCATIONSTRUCTUREDESC sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-TECHNICALOBJECTTYPEDESC sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTPLANTNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-COSTCENTERNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-PRODWORKCENTER sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTENANCEOBJECTLOCATION sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-ABCINDICATOR sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-COSTCENTER sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTOBJECTFREEDEFINEDATTRIB sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTENANCEPLANT sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTENANCEPLANNERGROUPNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-PLANNINGPLANTNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTWORKCENTER sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-FUNCTIONALLOCATIONCATEGORYDESC sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-FUNCTIONALLOCATIONNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-FUNCNLLOCPRIMARYLABELNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-TECHNICALOBJECTTYPE sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-FUNCTIONALLOCATIONCATEGORY sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-ASSETMANUFACTURERNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-FUNCLOCATIONSTRUCTURE sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-PLAINLONGTEXT sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CONTROLLINGAREA sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-AUTHORIZATIONGROUP sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-SUPERIORFLOCNAME sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-SUPERIORFUNCTIONALLOCATION sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTOBJECTLOCACCTASSGMTNMBR sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CONSTRUCTIONMATERIAL sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CHARCVALUE sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CHARCVALUEDESCRIPTION sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CHARCFROMNUMERICVALUE sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CHARCTONUMERICVALUE sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CLASSTYPE sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CLASS sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CLASSINTERNALID sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CLASSDESCRIPTION sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CHARACTERISTIC sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-CHARCDESCRIPTION sy-vline 
WA_ESH_L_FUNCTLOCTN_STR-MAINTOBJECTINTERNALID sy-vline      INTO ld_text SEPARATED BY SPACE.

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