ABAP Select data from SAP table ESD_ENDPOINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESD_ENDPOINT
*  INTO TABLE @DATA(IT_ESD_ENDPOINT2).
*--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_ESD_ENDPOINT INDEX 1 INTO DATA(WA_ESD_ENDPOINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESD_ENDPOINT>-SERVICE_DEF = 1.
<ESD_ENDPOINT>-FUNC = 1.
<ESD_ENDPOINT>-FUNC_ST = 1.
<ESD_ENDPOINT>-PARAM = 1.
<ESD_ENDPOINT>-PARAM_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESD_ENDPOINT-PARAM_TYPE_ICON, sy-vline,
  WA_ESD_ENDPOINT-PARAM_CLASS, sy-vline,
  WA_ESD_ENDPOINT-PARAM_FLAG_OPTIONAL, sy-vline,
  WA_ESD_ENDPOINT-PARAM_DEFAULT_VALUE, sy-vline,
  WA_ESD_ENDPOINT-PARAM_ST, sy-vline,
  WA_ESD_ENDPOINT-COMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESD_ENDPOINT 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_ESD_ENDPOINT 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_ESD_ENDPOINT INTO WA_ESD_ENDPOINT.


*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_ESD_ENDPOINT_STR, 
SERVICE_DEF TYPE STRING,
FUNC TYPE STRING,
FUNC_ST TYPE STRING,
PARAM TYPE STRING,
PARAM_TYPE TYPE STRING,
PARAM_TYPE_ICON TYPE STRING,
PARAM_CLASS TYPE STRING,
PARAM_FLAG_OPTIONAL TYPE STRING,
PARAM_DEFAULT_VALUE TYPE STRING,
PARAM_ST TYPE STRING,
COMP TYPE STRING,
COMP_TYPE TYPE STRING,
COMP_TYPE_ICON TYPE STRING,
COMP_CLASS TYPE STRING,
TYPE TYPE STRING,
TYPE_ICON TYPE STRING,
TYPE_CLASS TYPE STRING,
TYPE_DESC TYPE STRING,
STD_VALUE TYPE STRING,
STD_VALUE_FLAG TYPE STRING,
ABAP_CLASS TYPE STRING,
FIELD TYPE STRING,
FIELD_TYPE TYPE STRING,
NAME TYPE STRING,
REF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESD_ENDPOINT_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_ESD_ENDPOINT_STR-SERVICE_DEF sy-vline 
WA_ESD_ENDPOINT_STR-FUNC sy-vline 
WA_ESD_ENDPOINT_STR-FUNC_ST sy-vline 
WA_ESD_ENDPOINT_STR-PARAM sy-vline 
WA_ESD_ENDPOINT_STR-PARAM_TYPE sy-vline 
WA_ESD_ENDPOINT_STR-PARAM_TYPE_ICON sy-vline 
WA_ESD_ENDPOINT_STR-PARAM_CLASS sy-vline 
WA_ESD_ENDPOINT_STR-PARAM_FLAG_OPTIONAL sy-vline 
WA_ESD_ENDPOINT_STR-PARAM_DEFAULT_VALUE sy-vline 
WA_ESD_ENDPOINT_STR-PARAM_ST sy-vline 
WA_ESD_ENDPOINT_STR-COMP sy-vline 
WA_ESD_ENDPOINT_STR-COMP_TYPE sy-vline 
WA_ESD_ENDPOINT_STR-COMP_TYPE_ICON sy-vline 
WA_ESD_ENDPOINT_STR-COMP_CLASS sy-vline 
WA_ESD_ENDPOINT_STR-TYPE sy-vline 
WA_ESD_ENDPOINT_STR-TYPE_ICON sy-vline 
WA_ESD_ENDPOINT_STR-TYPE_CLASS sy-vline 
WA_ESD_ENDPOINT_STR-TYPE_DESC sy-vline 
WA_ESD_ENDPOINT_STR-STD_VALUE sy-vline 
WA_ESD_ENDPOINT_STR-STD_VALUE_FLAG sy-vline 
WA_ESD_ENDPOINT_STR-ABAP_CLASS sy-vline 
WA_ESD_ENDPOINT_STR-FIELD sy-vline 
WA_ESD_ENDPOINT_STR-FIELD_TYPE sy-vline 
WA_ESD_ENDPOINT_STR-NAME sy-vline 
WA_ESD_ENDPOINT_STR-REF sy-vline      INTO ld_text SEPARATED BY SPACE.

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