ABAP Select data from SAP table EHPRCS_LEGREG_MILESTONES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHPRCS_LEGREG_MILESTONES
*  INTO TABLE @DATA(IT_EHPRCS_LEGREG_MILESTONES2).
*--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_EHPRCS_LEGREG_MILESTONES INDEX 1 INTO DATA(WA_EHPRCS_LEGREG_MILESTONES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHPRCS_LEGREG_MILESTONES>-MANDT = 1.
<EHPRCS_LEGREG_MILESTONES>-GUID = 1.
<EHPRCS_LEGREG_MILESTONES>-CRDAT = 1.
<EHPRCS_LEGREG_MILESTONES>-CRNAM = 1.
<EHPRCS_LEGREG_MILESTONES>-CRTSTMP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHPRCS_LEGREG_MILESTONES-UPDDAT, sy-vline,
  WA_EHPRCS_LEGREG_MILESTONES-UPDNAM, sy-vline,
  WA_EHPRCS_LEGREG_MILESTONES-UPDTSTMP, sy-vline,
  WA_EHPRCS_LEGREG_MILESTONES-DELFLG, sy-vline,
  WA_EHPRCS_LEGREG_MILESTONES-MILESTONE_CODE, sy-vline,
  WA_EHPRCS_LEGREG_MILESTONES-PROJECT_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHPRCS_LEGREG_MILESTONES 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_EHPRCS_LEGREG_MILESTONES 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_EHPRCS_LEGREG_MILESTONES INTO WA_EHPRCS_LEGREG_MILESTONES.


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

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

*Conversion exit ALPHA, internal->external for field RECNROOT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHPRCS_LEGREG_MILESTONES-RECNROOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHPRCS_LEGREG_MILESTONES-RECNROOT.
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_EHPRCS_LEGREG_MILESTONES_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
CRTSTMP TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
UPDTSTMP TYPE STRING,
DELFLG TYPE STRING,
MILESTONE_CODE TYPE STRING,
PROJECT_KEY TYPE STRING,
MILES_STATUS TYPE STRING,
MILES_DEADL TYPE STRING,
MILES_FLG_REM TYPE STRING,
MILES_REMARK TYPE STRING,
MILES_RISK TYPE STRING,
MILES_LINK TYPE STRING,
MILES_RESP_PERS TYPE STRING,
DOKNR TYPE STRING,
DOKAR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DOKTX TYPE STRING,
RECNROOT TYPE STRING,
FU_REASON_CODE TYPE STRING,
MILES_DMS_TOOLTIP TYPE STRING,
MILES_REMINDER_DESC TYPE STRING,
MILES_UPDATEUSER_NAM TYPE STRING,
MILES_CODE_DESCRIPTION TYPE STRING,
MILES_STATUS_LBL_TXT TYPE STRING,
MILES_RISK_LBL_TXT TYPE STRING,
MILES_RESP_PERSON_TRANS TYPE STRING,
FU_REASON_NAME TYPE STRING,
EEW_EHPRC_LEGREG_MILES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHPRCS_LEGREG_MILESTONES_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_EHPRCS_LEGREG_MILESTONES_STR-MANDT sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-GUID sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-CRDAT sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-CRNAM sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-CRTSTMP sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-UPDDAT sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-UPDNAM sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-UPDTSTMP sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-DELFLG sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILESTONE_CODE sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-PROJECT_KEY sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_STATUS sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_DEADL sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_FLG_REM sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_REMARK sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_RISK sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_LINK sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_RESP_PERS sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-DOKNR sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-DOKAR sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-DOKVR sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-DOKTL sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-DOKTX sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-RECNROOT sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-FU_REASON_CODE sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_DMS_TOOLTIP sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_REMINDER_DESC sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_UPDATEUSER_NAM sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_CODE_DESCRIPTION sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_STATUS_LBL_TXT sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_RISK_LBL_TXT sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-MILES_RESP_PERSON_TRANS sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-FU_REASON_NAME sy-vline 
WA_EHPRCS_LEGREG_MILESTONES_STR-EEW_EHPRC_LEGREG_MILES sy-vline      INTO ld_text SEPARATED BY SPACE.

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