ABAP Select data from SAP table EGRIDUSG_SWTMSGDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EGRIDUSG_SWTMSGDATA
*  INTO TABLE @DATA(IT_EGRIDUSG_SWTMSGDATA2).
*--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_EGRIDUSG_SWTMSGDATA INDEX 1 INTO DATA(WA_EGRIDUSG_SWTMSGDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EGRIDUSG_SWTMSGDATA>-SWITCHDOC = 1.
<EGRIDUSG_SWTMSGDATA>-MANDT = 1.
<EGRIDUSG_SWTMSGDATA>-SWITCHNUM = 1.
<EGRIDUSG_SWTMSGDATA>-POD = 1.
<EGRIDUSG_SWTMSGDATA>-SWITCHTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EGRIDUSG_SWTMSGDATA-OWNER, sy-vline,
  WA_EGRIDUSG_SWTMSGDATA-SWTVIEW, sy-vline,
  WA_EGRIDUSG_SWTMSGDATA-MOVEINDATE, sy-vline,
  WA_EGRIDUSG_SWTMSGDATA-MOVEOUTDATE, sy-vline,
  WA_EGRIDUSG_SWTMSGDATA-REALMOVEINDATE, sy-vline,
  WA_EGRIDUSG_SWTMSGDATA-REALMOVEOUTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EGRIDUSG_SWTMSGDATA 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_EGRIDUSG_SWTMSGDATA 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_EGRIDUSG_SWTMSGDATA INTO WA_EGRIDUSG_SWTMSGDATA.


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

*Conversion exit CUNIT, internal->external for field MAXDEM_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EGRIDUSG_SWTMSGDATA-MAXDEM_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EGRIDUSG_SWTMSGDATA-MAXDEM_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PRGYCONS_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EGRIDUSG_SWTMSGDATA-PRGYCONS_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EGRIDUSG_SWTMSGDATA-PRGYCONS_UNIT.
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_EGRIDUSG_SWTMSGDATA_STR, 
SWITCHDOC TYPE STRING,
MANDT TYPE STRING,
SWITCHNUM TYPE STRING,
POD TYPE STRING,
SWITCHTYPE TYPE STRING,
OWNER TYPE STRING,
SWTVIEW TYPE STRING,
MOVEINDATE TYPE STRING,
MOVEOUTDATE TYPE STRING,
REALMOVEINDATE TYPE STRING,
REALMOVEOUTDATE TYPE STRING,
PARTNER TYPE STRING,
SERVICE_PROV_OLD TYPE STRING,
SERVICE_PROV_NEW TYPE STRING,
DISTRIBUTOR TYPE STRING,
STARTSCENARIO TYPE STRING,
TARGETSCENARIO TYPE STRING,
ENROLLDOC TYPE STRING,
DROPDOC TYPE STRING,
STATUS TYPE STRING,
STATUSTIME TYPE STRING,
TIME_ZONE TYPE STRING,
TIMESTAMP TYPE STRING,
SOURCE TYPE STRING,
EXT_REFERENCE TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
LOEVM TYPE STRING,
SPARTYP TYPE STRING,
QUOTE_ID TYPE STRING,
QUOTE_ITEM_ID TYPE STRING,
SWTDOC_ADDDATA TYPE STRING,
MSGDATA TYPE STRING,
MANDT TYPE STRING,
SWITCHNUM TYPE STRING,
MSGDATANUM TYPE STRING,
MSGDATE TYPE STRING,
MSGTIME TYPE STRING,
CATEGORY TYPE STRING,
DEXTASKID TYPE STRING,
DIRECTION TYPE STRING,
COMPARTNER TYPE STRING,
IDREFNR TYPE STRING,
METERNR TYPE STRING,
NAME_L TYPE STRING,
NAME_F TYPE STRING,
STREET TYPE STRING,
HOUSENR TYPE STRING,
HOUSENREXT TYPE STRING,
POSTCODE TYPE STRING,
CITY TYPE STRING,
TRANSREASON TYPE STRING,
SETTLRESP TYPE STRING,
METMETHOD TYPE STRING,
PROFILE TYPE STRING,
PROGYEARCONS TYPE STRING,
MAXDEMAND TYPE STRING,
MSGSTATUS TYPE STRING,
PROCSTATUS TYPE STRING,
PROCSTATUSTIMEST TYPE STRING,
MOVEINDATE TYPE STRING,
MOVEOUTDATE TYPE STRING,
EXT_UI TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
LOEVM TYPE STRING,
STREET_BU TYPE STRING,
HOUSENR_BU TYPE STRING,
HOUSENREXT_BU TYPE STRING,
POSTCODE_BU TYPE STRING,
CITY_BU TYPE STRING,
SETTLUNITEXT TYPE STRING,
MAXDEM_UNIT TYPE STRING,
PRGYCONS_UNIT TYPE STRING,
MSGDATACOMMENT TYPE STRING,
SWTMSG_ADDDATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EGRIDUSG_SWTMSGDATA_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_EGRIDUSG_SWTMSGDATA_STR-SWITCHDOC sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MANDT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SWITCHNUM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-POD sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SWITCHTYPE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-OWNER sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SWTVIEW sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MOVEINDATE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MOVEOUTDATE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-REALMOVEINDATE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-REALMOVEOUTDATE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-PARTNER sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SERVICE_PROV_OLD sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SERVICE_PROV_NEW sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-DISTRIBUTOR sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-STARTSCENARIO sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-TARGETSCENARIO sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-ENROLLDOC sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-DROPDOC sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-STATUS sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-STATUSTIME sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-TIME_ZONE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-TIMESTAMP sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SOURCE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-EXT_REFERENCE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-ERDAT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-ERNAM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-AEDAT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-AENAM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-BEGRU sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-LOEVM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SPARTYP sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-QUOTE_ID sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-QUOTE_ITEM_ID sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SWTDOC_ADDDATA sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MSGDATA sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MANDT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SWITCHNUM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MSGDATANUM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MSGDATE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MSGTIME sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-CATEGORY sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-DEXTASKID sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-DIRECTION sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-COMPARTNER sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-IDREFNR sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-METERNR sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-NAME_L sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-NAME_F sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-STREET sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-HOUSENR sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-HOUSENREXT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-POSTCODE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-CITY sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-TRANSREASON sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SETTLRESP sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-METMETHOD sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-PROFILE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-PROGYEARCONS sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MAXDEMAND sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MSGSTATUS sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-PROCSTATUS sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-PROCSTATUSTIMEST sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MOVEINDATE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MOVEOUTDATE sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-EXT_UI sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-ERDAT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-ERNAM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-AEDAT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-AENAM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-BEGRU sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-LOEVM sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-STREET_BU sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-HOUSENR_BU sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-HOUSENREXT_BU sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-POSTCODE_BU sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-CITY_BU sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SETTLUNITEXT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MAXDEM_UNIT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-PRGYCONS_UNIT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-MSGDATACOMMENT sy-vline 
WA_EGRIDUSG_SWTMSGDATA_STR-SWTMSG_ADDDATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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