ABAP Select data from SAP table EHFNDS_GW_LOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_GW_LOC
*  INTO TABLE @DATA(IT_EHFNDS_GW_LOC2).
*--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_EHFNDS_GW_LOC INDEX 1 INTO DATA(WA_EHFNDS_GW_LOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_GW_LOC>-KEY = 1.
<EHFNDS_GW_LOC>-PARENT_KEY = 1.
<EHFNDS_GW_LOC>-ROOT_KEY = 1.
<EHFNDS_GW_LOC>-NAME = 1.
<EHFNDS_GW_LOC>-DESC_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_GW_LOC-NAME1, sy-vline,
  WA_EHFNDS_GW_LOC-NAME2, sy-vline,
  WA_EHFNDS_GW_LOC-CITY1, sy-vline,
  WA_EHFNDS_GW_LOC-POST_CODE1, sy-vline,
  WA_EHFNDS_GW_LOC-STREET, sy-vline,
  WA_EHFNDS_GW_LOC-COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_GW_LOC 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_EHFNDS_GW_LOC 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_EHFNDS_GW_LOC INTO WA_EHFNDS_GW_LOC.


*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 EHMIN, internal->external for field LONGITUTE
CALL FUNCTION 'CONVERSION_EXIT_EHMIN_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_GW_LOC-LONGITUTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_GW_LOC-LONGITUTE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHMIN, internal->external for field LATITUDE
CALL FUNCTION 'CONVERSION_EXIT_EHMIN_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_GW_LOC-LATITUDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_GW_LOC-LATITUDE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHMIN, internal->external for field ELEVATION
CALL FUNCTION 'CONVERSION_EXIT_EHMIN_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_GW_LOC-ELEVATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_GW_LOC-ELEVATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SYUID, internal->external for field PERSON_ID
CALL FUNCTION 'CONVERSION_EXIT_SYUID_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_GW_LOC-PERSON_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_GW_LOC-PERSON_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LCTYP, internal->external for field TYPE
CALL FUNCTION 'CONVERSION_EXIT_LCTYP_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_GW_LOC-TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_GW_LOC-TYPE.
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_EHFNDS_GW_LOC_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
NAME TYPE STRING,
DESC_TEXT TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
CITY1 TYPE STRING,
POST_CODE1 TYPE STRING,
STREET TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
PHONE TYPE STRING,
FAX TYPE STRING,
LONGITUTE TYPE STRING,
LATITUDE TYPE STRING,
ELEVATION TYPE STRING,
TIME_ZONE TYPE STRING,
PERSON_ID TYPE STRING,
FUNC_LOC_DESC TYPE STRING,
EQUIPMENT_DESC TYPE STRING,
PLANT_DESC TYPE STRING,
COMPANY_CODE_DESC TYPE STRING,
BUSS_AREA_DESC TYPE STRING,
ADDRESS_STRING TYPE STRING,
ORG_UNIT_DESC TYPE STRING,
COST_CENTER_DESC TYPE STRING,
COUNTRY_DESC TYPE STRING,
REGION_DESC TYPE STRING,
TYPE TYPE STRING,
LOC_INCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_GW_LOC_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_EHFNDS_GW_LOC_STR-KEY sy-vline 
WA_EHFNDS_GW_LOC_STR-PARENT_KEY sy-vline 
WA_EHFNDS_GW_LOC_STR-ROOT_KEY sy-vline 
WA_EHFNDS_GW_LOC_STR-NAME sy-vline 
WA_EHFNDS_GW_LOC_STR-DESC_TEXT sy-vline 
WA_EHFNDS_GW_LOC_STR-NAME1 sy-vline 
WA_EHFNDS_GW_LOC_STR-NAME2 sy-vline 
WA_EHFNDS_GW_LOC_STR-CITY1 sy-vline 
WA_EHFNDS_GW_LOC_STR-POST_CODE1 sy-vline 
WA_EHFNDS_GW_LOC_STR-STREET sy-vline 
WA_EHFNDS_GW_LOC_STR-COUNTRY sy-vline 
WA_EHFNDS_GW_LOC_STR-REGION sy-vline 
WA_EHFNDS_GW_LOC_STR-PHONE sy-vline 
WA_EHFNDS_GW_LOC_STR-FAX sy-vline 
WA_EHFNDS_GW_LOC_STR-LONGITUTE sy-vline 
WA_EHFNDS_GW_LOC_STR-LATITUDE sy-vline 
WA_EHFNDS_GW_LOC_STR-ELEVATION sy-vline 
WA_EHFNDS_GW_LOC_STR-TIME_ZONE sy-vline 
WA_EHFNDS_GW_LOC_STR-PERSON_ID sy-vline 
WA_EHFNDS_GW_LOC_STR-FUNC_LOC_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-EQUIPMENT_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-PLANT_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-COMPANY_CODE_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-BUSS_AREA_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-ADDRESS_STRING sy-vline 
WA_EHFNDS_GW_LOC_STR-ORG_UNIT_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-COST_CENTER_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-COUNTRY_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-REGION_DESC sy-vline 
WA_EHFNDS_GW_LOC_STR-TYPE sy-vline 
WA_EHFNDS_GW_LOC_STR-LOC_INCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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