ABAP Select data from SAP table EAMI_MSG_OBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAMI_MSG_OBJ
*  INTO TABLE @DATA(IT_EAMI_MSG_OBJ2).
*--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_EAMI_MSG_OBJ INDEX 1 INTO DATA(WA_EAMI_MSG_OBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAMI_MSG_OBJ>-PUBLIC = 1.
<EAMI_MSG_OBJ>-SUB_REPID = 1.
<EAMI_MSG_OBJ>-SUB_DYNNR = 1.
<EAMI_MSG_OBJ>-SUBSL_REPID = 1.
<EAMI_MSG_OBJ>-SUBSL_DYNNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAMI_MSG_OBJ-OBJ_DATA, sy-vline,
  WA_EAMI_MSG_OBJ-MSG_DATA, sy-vline,
  WA_EAMI_MSG_OBJ-EQUNR, sy-vline,
  WA_EAMI_MSG_OBJ-MSG_ID, sy-vline,
  WA_EAMI_MSG_OBJ-LANGU_MSG_TEXT, sy-vline,
  WA_EAMI_MSG_OBJ-OBJ_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAMI_MSG_OBJ 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_EAMI_MSG_OBJ 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_EAMI_MSG_OBJ INTO WA_EAMI_MSG_OBJ.


*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 EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EAMI_MSG_OBJ-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMI_MSG_OBJ-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU_MSG_TEXT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EAMI_MSG_OBJ-LANGU_MSG_TEXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMI_MSG_OBJ-LANGU_MSG_TEXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OBJ_KEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EAMI_MSG_OBJ-OBJ_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMI_MSG_OBJ-OBJ_KEY.
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_EAMI_MSG_OBJ_STR, 
PUBLIC TYPE STRING,
SUB_REPID TYPE STRING,
SUB_DYNNR TYPE STRING,
SUBSL_REPID TYPE STRING,
SUBSL_DYNNR TYPE STRING,
OBJ_DATA TYPE STRING,
MSG_DATA TYPE STRING,
EQUNR TYPE STRING,
MSG_ID TYPE STRING,
LANGU_MSG_TEXT TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_KEY TYPE STRING,
MSG_TYPE_ID TYPE STRING,
SOURCE TYPE STRING,
MSG_CAT TYPE STRING,
CR_NAME TYPE STRING,
CR_DATE TYPE STRING,
CR_TIME TYPE STRING,
VALID_DATE TYPE STRING,
VALID_TIME TYPE STRING,
MSG_TEXT TYPE STRING,
MSG_SEND_STATUS TYPE STRING,
SEND_DATE TYPE STRING,
SEND_TIME TYPE STRING,
MSG_TEMPL_ID TYPE STRING,
MSG_TEMPL_NAME TYPE STRING,
ERROR_LOG TYPE STRING,
TYPE TYPE STRING,
ID TYPE STRING,
NUMBER TYPE STRING,
MESSAGE TYPE STRING,
LOG_NO TYPE STRING,
LOG_MSG_NO TYPE STRING,
MESSAGE_V1 TYPE STRING,
MESSAGE_V2 TYPE STRING,
MESSAGE_V3 TYPE STRING,
MESSAGE_V4 TYPE STRING,
CONTR TYPE STRING,
GENERAL TYPE STRING,
WMODE TYPE STRING,
OPEN_WMODE TYPE STRING,
UPD_ONLINE TYPE STRING,
NO_DIALOG TYPE STRING,
NUM_RANGE TYPE STRING,
NO_CHANGE TYPE STRING,
NO_OTHER TYPE STRING,
NO_EVENT TYPE STRING,
NO_STATISTIC TYPE STRING,
NO_CHANGE_DOC TYPE STRING,
CALLED_BY_IDOC TYPE STRING,
PROPRICE TYPE STRING,
INPERR TYPE STRING,
ENQ_DONE TYPE STRING,
CURFIELD TYPE STRING,
CURLINE TYPE STRING,
CURDYNNR TYPE STRING,
SETCURFIELD TYPE STRING,
SETCURLINE TYPE STRING,
SETCURDYNNR TYPE STRING,
TEXT_CHANGED TYPE STRING,
EXTINTKZ TYPE STRING,
EXIT_TYPE TYPE STRING,
FULLSCREEN TYPE STRING,
SAVE_OKCODE TYPE STRING,
TEILOBJ TYPE STRING,
S_FUBA TYPE STRING,
INPUT_FIELD_OFF TYPE STRING,
NOFULLSCREEN TYPE STRING,
DB_UPDATE TYPE STRING,
CHANGEFLAG TYPE STRING,
WA_ADR_DONE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAMI_MSG_OBJ_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_EAMI_MSG_OBJ_STR-PUBLIC sy-vline 
WA_EAMI_MSG_OBJ_STR-SUB_REPID sy-vline 
WA_EAMI_MSG_OBJ_STR-SUB_DYNNR sy-vline 
WA_EAMI_MSG_OBJ_STR-SUBSL_REPID sy-vline 
WA_EAMI_MSG_OBJ_STR-SUBSL_DYNNR sy-vline 
WA_EAMI_MSG_OBJ_STR-OBJ_DATA sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_DATA sy-vline 
WA_EAMI_MSG_OBJ_STR-EQUNR sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_ID sy-vline 
WA_EAMI_MSG_OBJ_STR-LANGU_MSG_TEXT sy-vline 
WA_EAMI_MSG_OBJ_STR-OBJ_TYPE sy-vline 
WA_EAMI_MSG_OBJ_STR-OBJ_KEY sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_TYPE_ID sy-vline 
WA_EAMI_MSG_OBJ_STR-SOURCE sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_CAT sy-vline 
WA_EAMI_MSG_OBJ_STR-CR_NAME sy-vline 
WA_EAMI_MSG_OBJ_STR-CR_DATE sy-vline 
WA_EAMI_MSG_OBJ_STR-CR_TIME sy-vline 
WA_EAMI_MSG_OBJ_STR-VALID_DATE sy-vline 
WA_EAMI_MSG_OBJ_STR-VALID_TIME sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_TEXT sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_SEND_STATUS sy-vline 
WA_EAMI_MSG_OBJ_STR-SEND_DATE sy-vline 
WA_EAMI_MSG_OBJ_STR-SEND_TIME sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_TEMPL_ID sy-vline 
WA_EAMI_MSG_OBJ_STR-MSG_TEMPL_NAME sy-vline 
WA_EAMI_MSG_OBJ_STR-ERROR_LOG sy-vline 
WA_EAMI_MSG_OBJ_STR-TYPE sy-vline 
WA_EAMI_MSG_OBJ_STR-ID sy-vline 
WA_EAMI_MSG_OBJ_STR-NUMBER sy-vline 
WA_EAMI_MSG_OBJ_STR-MESSAGE sy-vline 
WA_EAMI_MSG_OBJ_STR-LOG_NO sy-vline 
WA_EAMI_MSG_OBJ_STR-LOG_MSG_NO sy-vline 
WA_EAMI_MSG_OBJ_STR-MESSAGE_V1 sy-vline 
WA_EAMI_MSG_OBJ_STR-MESSAGE_V2 sy-vline 
WA_EAMI_MSG_OBJ_STR-MESSAGE_V3 sy-vline 
WA_EAMI_MSG_OBJ_STR-MESSAGE_V4 sy-vline 
WA_EAMI_MSG_OBJ_STR-CONTR sy-vline 
WA_EAMI_MSG_OBJ_STR-GENERAL sy-vline 
WA_EAMI_MSG_OBJ_STR-WMODE sy-vline 
WA_EAMI_MSG_OBJ_STR-OPEN_WMODE sy-vline 
WA_EAMI_MSG_OBJ_STR-UPD_ONLINE sy-vline 
WA_EAMI_MSG_OBJ_STR-NO_DIALOG sy-vline 
WA_EAMI_MSG_OBJ_STR-NUM_RANGE sy-vline 
WA_EAMI_MSG_OBJ_STR-NO_CHANGE sy-vline 
WA_EAMI_MSG_OBJ_STR-NO_OTHER sy-vline 
WA_EAMI_MSG_OBJ_STR-NO_EVENT sy-vline 
WA_EAMI_MSG_OBJ_STR-NO_STATISTIC sy-vline 
WA_EAMI_MSG_OBJ_STR-NO_CHANGE_DOC sy-vline 
WA_EAMI_MSG_OBJ_STR-CALLED_BY_IDOC sy-vline 
WA_EAMI_MSG_OBJ_STR-PROPRICE sy-vline 
WA_EAMI_MSG_OBJ_STR-INPERR sy-vline 
WA_EAMI_MSG_OBJ_STR-ENQ_DONE sy-vline 
WA_EAMI_MSG_OBJ_STR-CURFIELD sy-vline 
WA_EAMI_MSG_OBJ_STR-CURLINE sy-vline 
WA_EAMI_MSG_OBJ_STR-CURDYNNR sy-vline 
WA_EAMI_MSG_OBJ_STR-SETCURFIELD sy-vline 
WA_EAMI_MSG_OBJ_STR-SETCURLINE sy-vline 
WA_EAMI_MSG_OBJ_STR-SETCURDYNNR sy-vline 
WA_EAMI_MSG_OBJ_STR-TEXT_CHANGED sy-vline 
WA_EAMI_MSG_OBJ_STR-EXTINTKZ sy-vline 
WA_EAMI_MSG_OBJ_STR-EXIT_TYPE sy-vline 
WA_EAMI_MSG_OBJ_STR-FULLSCREEN sy-vline 
WA_EAMI_MSG_OBJ_STR-SAVE_OKCODE sy-vline 
WA_EAMI_MSG_OBJ_STR-TEILOBJ sy-vline 
WA_EAMI_MSG_OBJ_STR-S_FUBA sy-vline 
WA_EAMI_MSG_OBJ_STR-INPUT_FIELD_OFF sy-vline 
WA_EAMI_MSG_OBJ_STR-NOFULLSCREEN sy-vline 
WA_EAMI_MSG_OBJ_STR-DB_UPDATE sy-vline 
WA_EAMI_MSG_OBJ_STR-CHANGEFLAG sy-vline 
WA_EAMI_MSG_OBJ_STR-WA_ADR_DONE sy-vline      INTO ld_text SEPARATED BY SPACE.

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