ABAP Select data from SAP table EHHSSS_SEG_LOC_AGENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHHSSS_SEG_LOC_AGENT
*  INTO TABLE @DATA(IT_EHHSSS_SEG_LOC_AGENT2).
*--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_EHHSSS_SEG_LOC_AGENT INDEX 1 INTO DATA(WA_EHHSSS_SEG_LOC_AGENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHHSSS_SEG_LOC_AGENT>-SELECTED = 1.
<EHHSSS_SEG_LOC_AGENT>-AGENT_KEY_REF = 1.
<EHHSSS_SEG_LOC_AGENT>-CMA_KEY_REF = 1.
<EHHSSS_SEG_LOC_AGENT>-ABAGT_KEY_REF = 1.
<EHHSSS_SEG_LOC_AGENT>-AGENT_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHHSSS_SEG_LOC_AGENT-LOCATION_COVERAGE, sy-vline,
  WA_EHHSSS_SEG_LOC_AGENT-LOCATIONS, sy-vline,
  WA_EHHSSS_SEG_LOC_AGENT-LOCATIONS_COUNT, sy-vline,
  WA_EHHSSS_SEG_LOC_AGENT-LOCATIONS_KEYS, sy-vline,
  WA_EHHSSS_SEG_LOC_AGENT-SINGLE_LOC_NAME, sy-vline,
  WA_EHHSSS_SEG_LOC_AGENT-SINGLE_LOC_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHHSSS_SEG_LOC_AGENT 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_EHHSSS_SEG_LOC_AGENT 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_EHHSSS_SEG_LOC_AGENT INTO WA_EHHSSS_SEG_LOC_AGENT.


*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 EHAGD, internal->external for field AGENT_KEY_REF
CALL FUNCTION 'CONVERSION_EXIT_EHAGD_OUTPUT'
  EXPORTING
    input =                      WA_EHHSSS_SEG_LOC_AGENT-AGENT_KEY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHHSSS_SEG_LOC_AGENT-AGENT_KEY_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHCMD, internal->external for field CMA_KEY_REF
CALL FUNCTION 'CONVERSION_EXIT_EHCMD_OUTPUT'
  EXPORTING
    input =                      WA_EHHSSS_SEG_LOC_AGENT-CMA_KEY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHHSSS_SEG_LOC_AGENT-CMA_KEY_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHAAG, internal->external for field ABAGT_KEY_REF
CALL FUNCTION 'CONVERSION_EXIT_EHAAG_OUTPUT'
  EXPORTING
    input =                      WA_EHHSSS_SEG_LOC_AGENT-ABAGT_KEY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHHSSS_SEG_LOC_AGENT-ABAGT_KEY_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DFVAL, internal->external for field LOCATION_COVERAGE
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHHSSS_SEG_LOC_AGENT-LOCATION_COVERAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHHSSS_SEG_LOC_AGENT-LOCATION_COVERAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LCRID, internal->external for field SINGLE_LOC_KEY
CALL FUNCTION 'CONVERSION_EXIT_LCRID_OUTPUT'
  EXPORTING
    input =                      WA_EHHSSS_SEG_LOC_AGENT-SINGLE_LOC_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHHSSS_SEG_LOC_AGENT-SINGLE_LOC_KEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DFVAL, internal->external for field JOB_COVERAGE
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHHSSS_SEG_LOC_AGENT-JOB_COVERAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHHSSS_SEG_LOC_AGENT-JOB_COVERAGE.
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_EHHSSS_SEG_LOC_AGENT_STR, 
SELECTED TYPE STRING,
AGENT_KEY_REF TYPE STRING,
CMA_KEY_REF TYPE STRING,
ABAGT_KEY_REF TYPE STRING,
AGENT_NAME TYPE STRING,
LOCATION_COVERAGE TYPE STRING,
LOCATIONS TYPE STRING,
LOCATIONS_COUNT TYPE STRING,
LOCATIONS_KEYS TYPE STRING,
SINGLE_LOC_NAME TYPE STRING,
SINGLE_LOC_KEY TYPE STRING,
JOB_COVERAGE TYPE STRING,
JOBS TYPE STRING,
JOBS_COUNT TYPE STRING,
JOBS_KEYS TYPE STRING,
SINGLE_JOB_NAME TYPE STRING,
SINGLE_JOB_KEY TYPE STRING,
KEY TYPE STRING,
DETAILS TYPE STRING,
IS_SELECTABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHHSSS_SEG_LOC_AGENT_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_EHHSSS_SEG_LOC_AGENT_STR-SELECTED sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-AGENT_KEY_REF sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-CMA_KEY_REF sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-ABAGT_KEY_REF sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-AGENT_NAME sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-LOCATION_COVERAGE sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-LOCATIONS sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-LOCATIONS_COUNT sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-LOCATIONS_KEYS sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-SINGLE_LOC_NAME sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-SINGLE_LOC_KEY sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-JOB_COVERAGE sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-JOBS sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-JOBS_COUNT sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-JOBS_KEYS sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-SINGLE_JOB_NAME sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-SINGLE_JOB_KEY sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-KEY sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-DETAILS sy-vline 
WA_EHHSSS_SEG_LOC_AGENT_STR-IS_SELECTABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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