ABAP Select data from SAP table /PLMI/S_ECN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PLMI/S_ECN 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 /PLMI/S_ECN. 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 /PLMI/S_ECN 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_/PLMI/S_ECN TYPE STANDARD TABLE OF /PLMI/S_ECN,
      WA_/PLMI/S_ECN TYPE /PLMI/S_ECN,
      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: </PLMI/S_ECN> TYPE /PLMI/S_ECN.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PLMI/S_ECN
  INTO TABLE IT_/PLMI/S_ECN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMI/S_ECN
*  INTO TABLE @DATA(IT_/PLMI/S_ECN2).
*--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_/PLMI/S_ECN INDEX 1 INTO DATA(WA_/PLMI/S_ECN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PLMI/S_ECN ASSIGNING </PLMI/S_ECN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMI/S_ECN>-CHANGE_NO = 1.
</PLMI/S_ECN>-STATUS = 1.
</PLMI/S_ECN>-AUTH_GROUP = 1.
</PLMI/S_ECN>-VALID_FROM = 1.
</PLMI/S_ECN>-RELEASE_KEY = 1.

ENDLOOP.

LOOP AT IT_/PLMI/S_ECN INTO WA_/PLMI/S_ECN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMI/S_ECN-DESCRIPTION, sy-vline,
  WA_/PLMI/S_ECN-CHANGE_REASON, sy-vline,
  WA_/PLMI/S_ECN-LONGTEXT_FLAG, sy-vline,
  WA_/PLMI/S_ECN-BACKEND_CLIENT, sy-vline,
  WA_/PLMI/S_ECN-DELETION_FLAG, sy-vline,
  WA_/PLMI/S_ECN-FUNCTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMI/S_ECN 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_/PLMI/S_ECN 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_/PLMI/S_ECN INTO WA_/PLMI/S_ECN.


*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 CHANGE_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_ECN-CHANGE_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_ECN-CHANGE_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGE_LEADER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_ECN-CHANGE_LEADER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_ECN-CHANGE_LEADER.
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_/PLMI/S_ECN_STR, 
CHANGE_NO TYPE STRING,
STATUS TYPE STRING,
AUTH_GROUP TYPE STRING,
VALID_FROM TYPE STRING,
RELEASE_KEY TYPE STRING,
DESCRIPTION TYPE STRING,
CHANGE_REASON TYPE STRING,
LONGTEXT_FLAG TYPE STRING,
BACKEND_CLIENT TYPE STRING,
DELETION_FLAG TYPE STRING,
FUNCTION TYPE STRING,
CHANGE_TYPE TYPE STRING,
CHANGE_LEADER TYPE STRING,
EFFECTIVITY_TYPE TYPE STRING,
OVERRIDE_FLAG TYPE STRING,
RANK TYPE STRING,
TECHNICAL_RELEASED_FLAG TYPE STRING,
BASIC_CHANGE TYPE STRING,
CREATE_DATE TYPE STRING,
CREATE_USER TYPE STRING,
CHANGE_DATE TYPE STRING,
CHANGE_USER TYPE STRING,
EFFECTIVITY_TYPE_ID TYPE STRING,
TECHV TYPE STRING,
CCSTM TYPE STRING,
DYDAT TYPE STRING,
CONT1 TYPE STRING,
RLDAT TYPE STRING,
RLTIM TYPE STRING,
NACHT TYPE STRING,
INDAT TYPE STRING,
AUDAT TYPE STRING,
FLUSE TYPE STRING,
AEDIF TYPE STRING,
LASTCHANGEDDATETIME TYPE STRING,
USAGE_FLAG TYPE STRING,
FUNCTION_TEXT TYPE STRING,
STATUS_TEXT TYPE STRING,
SYSTEM_STATUS TYPE STRING,
USER_STATUS TYPE STRING,
EFFECTIVITY_TYPE_TEXT TYPE STRING,
RELEASE_KEY_TEXT TYPE STRING,
STATUS_OBJECT_TMP TYPE STRING,
USAGE_FLAG_FILLED TYPE STRING,
FUNCTION_TEXT_FILLED TYPE STRING,
STATUS_TEXT_FILLED TYPE STRING,
SYSTEM_USER_STATUS_FILLED TYPE STRING,
EFFECTIVITY_TYPE_TEXT_FILLED TYPE STRING,
RELEASE_KEY_TEXT_FILLED TYPE STRING,
DOCUMENT_FLOW_FILLED TYPE STRING,
ALT_DATE TYPE STRING,
OBJ_TYPE TYPE STRING,
OMR_BOM_MAT TYPE STRING,
OMR_BOM_EQUI TYPE STRING,
OMR_BOM_DIR TYPE STRING,
OMR_BOM_FL TYPE STRING,
OMR_BOM_STD TYPE STRING,
OMR_BOM_ORDER TYPE STRING,
OMR_BOM_WBS TYPE STRING,
OMR_TASK_LIST TYPE STRING,
OMR_DIR TYPE STRING,
OMR_MAT TYPE STRING,
OMR_PVS_VAR TYPE STRING,
OMR_ALL TYPE STRING,
EFFECTIVITY TYPE STRING,
CHANGE_PACKAGE TYPE STRING,
DOCUMENT_FLOW TYPE STRING,
PROCESS_STATE TYPE STRING,
PROCESS_BLOCK TYPE STRING,
LOCK_FLAG TYPE STRING,
HEADER_ONLY_FLAG TYPE STRING,
INTERNAL_NUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMI/S_ECN_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_/PLMI/S_ECN_STR-CHANGE_NO sy-vline 
WA_/PLMI/S_ECN_STR-STATUS sy-vline 
WA_/PLMI/S_ECN_STR-AUTH_GROUP sy-vline 
WA_/PLMI/S_ECN_STR-VALID_FROM sy-vline 
WA_/PLMI/S_ECN_STR-RELEASE_KEY sy-vline 
WA_/PLMI/S_ECN_STR-DESCRIPTION sy-vline 
WA_/PLMI/S_ECN_STR-CHANGE_REASON sy-vline 
WA_/PLMI/S_ECN_STR-LONGTEXT_FLAG sy-vline 
WA_/PLMI/S_ECN_STR-BACKEND_CLIENT sy-vline 
WA_/PLMI/S_ECN_STR-DELETION_FLAG sy-vline 
WA_/PLMI/S_ECN_STR-FUNCTION sy-vline 
WA_/PLMI/S_ECN_STR-CHANGE_TYPE sy-vline 
WA_/PLMI/S_ECN_STR-CHANGE_LEADER sy-vline 
WA_/PLMI/S_ECN_STR-EFFECTIVITY_TYPE sy-vline 
WA_/PLMI/S_ECN_STR-OVERRIDE_FLAG sy-vline 
WA_/PLMI/S_ECN_STR-RANK sy-vline 
WA_/PLMI/S_ECN_STR-TECHNICAL_RELEASED_FLAG sy-vline 
WA_/PLMI/S_ECN_STR-BASIC_CHANGE sy-vline 
WA_/PLMI/S_ECN_STR-CREATE_DATE sy-vline 
WA_/PLMI/S_ECN_STR-CREATE_USER sy-vline 
WA_/PLMI/S_ECN_STR-CHANGE_DATE sy-vline 
WA_/PLMI/S_ECN_STR-CHANGE_USER sy-vline 
WA_/PLMI/S_ECN_STR-EFFECTIVITY_TYPE_ID sy-vline 
WA_/PLMI/S_ECN_STR-TECHV sy-vline 
WA_/PLMI/S_ECN_STR-CCSTM sy-vline 
WA_/PLMI/S_ECN_STR-DYDAT sy-vline 
WA_/PLMI/S_ECN_STR-CONT1 sy-vline 
WA_/PLMI/S_ECN_STR-RLDAT sy-vline 
WA_/PLMI/S_ECN_STR-RLTIM sy-vline 
WA_/PLMI/S_ECN_STR-NACHT sy-vline 
WA_/PLMI/S_ECN_STR-INDAT sy-vline 
WA_/PLMI/S_ECN_STR-AUDAT sy-vline 
WA_/PLMI/S_ECN_STR-FLUSE sy-vline 
WA_/PLMI/S_ECN_STR-AEDIF sy-vline 
WA_/PLMI/S_ECN_STR-LASTCHANGEDDATETIME sy-vline 
WA_/PLMI/S_ECN_STR-USAGE_FLAG sy-vline 
WA_/PLMI/S_ECN_STR-FUNCTION_TEXT sy-vline 
WA_/PLMI/S_ECN_STR-STATUS_TEXT sy-vline 
WA_/PLMI/S_ECN_STR-SYSTEM_STATUS sy-vline 
WA_/PLMI/S_ECN_STR-USER_STATUS sy-vline 
WA_/PLMI/S_ECN_STR-EFFECTIVITY_TYPE_TEXT sy-vline 
WA_/PLMI/S_ECN_STR-RELEASE_KEY_TEXT sy-vline 
WA_/PLMI/S_ECN_STR-STATUS_OBJECT_TMP sy-vline 
WA_/PLMI/S_ECN_STR-USAGE_FLAG_FILLED sy-vline 
WA_/PLMI/S_ECN_STR-FUNCTION_TEXT_FILLED sy-vline 
WA_/PLMI/S_ECN_STR-STATUS_TEXT_FILLED sy-vline 
WA_/PLMI/S_ECN_STR-SYSTEM_USER_STATUS_FILLED sy-vline 
WA_/PLMI/S_ECN_STR-EFFECTIVITY_TYPE_TEXT_FILLED sy-vline 
WA_/PLMI/S_ECN_STR-RELEASE_KEY_TEXT_FILLED sy-vline 
WA_/PLMI/S_ECN_STR-DOCUMENT_FLOW_FILLED sy-vline 
WA_/PLMI/S_ECN_STR-ALT_DATE sy-vline 
WA_/PLMI/S_ECN_STR-OBJ_TYPE sy-vline 
WA_/PLMI/S_ECN_STR-OMR_BOM_MAT sy-vline 
WA_/PLMI/S_ECN_STR-OMR_BOM_EQUI sy-vline 
WA_/PLMI/S_ECN_STR-OMR_BOM_DIR sy-vline 
WA_/PLMI/S_ECN_STR-OMR_BOM_FL sy-vline 
WA_/PLMI/S_ECN_STR-OMR_BOM_STD sy-vline 
WA_/PLMI/S_ECN_STR-OMR_BOM_ORDER sy-vline 
WA_/PLMI/S_ECN_STR-OMR_BOM_WBS sy-vline 
WA_/PLMI/S_ECN_STR-OMR_TASK_LIST sy-vline 
WA_/PLMI/S_ECN_STR-OMR_DIR sy-vline 
WA_/PLMI/S_ECN_STR-OMR_MAT sy-vline 
WA_/PLMI/S_ECN_STR-OMR_PVS_VAR sy-vline 
WA_/PLMI/S_ECN_STR-OMR_ALL sy-vline 
WA_/PLMI/S_ECN_STR-EFFECTIVITY sy-vline 
WA_/PLMI/S_ECN_STR-CHANGE_PACKAGE sy-vline 
WA_/PLMI/S_ECN_STR-DOCUMENT_FLOW sy-vline 
WA_/PLMI/S_ECN_STR-PROCESS_STATE sy-vline 
WA_/PLMI/S_ECN_STR-PROCESS_BLOCK sy-vline 
WA_/PLMI/S_ECN_STR-LOCK_FLAG sy-vline 
WA_/PLMI/S_ECN_STR-HEADER_ONLY_FLAG sy-vline 
WA_/PLMI/S_ECN_STR-INTERNAL_NUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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