ABAP Select data from SAP table EHSWAV_MNVHSIGN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAV_MNVHSIGN
*  INTO TABLE @DATA(IT_EHSWAV_MNVHSIGN2).
*--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_EHSWAV_MNVHSIGN INDEX 1 INTO DATA(WA_EHSWAV_MNVHSIGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAV_MNVHSIGN>-MANDT = 1.
<EHSWAV_MNVHSIGN>-RECN = 1.
<EHSWAV_MNVHSIGN>-DELFLG = 1.
<EHSWAV_MNVHSIGN>-PARKFLG = 1.
<EHSWAV_MNVHSIGN>-CRDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAV_MNVHSIGN-CRNAM, sy-vline,
  WA_EHSWAV_MNVHSIGN-UPDDAT, sy-vline,
  WA_EHSWAV_MNVHSIGN-UPDNAM, sy-vline,
  WA_EHSWAV_MNVHSIGN-SRSID, sy-vline,
  WA_EHSWAV_MNVHSIGN-OWNID, sy-vline,
  WA_EHSWAV_MNVHSIGN-RECNROOT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAV_MNVHSIGN 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_EHSWAV_MNVHSIGN 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_EHSWAV_MNVHSIGN INTO WA_EHSWAV_MNVHSIGN.


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

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAV_MNVHSIGN-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAV_MNVHSIGN-PARTNER.
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_EHSWAV_MNVHSIGN_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
MNBPROLE TYPE STRING,
MNRECNBP TYPE STRING,
MNBPORD TYPE STRING,
MNBPIDCTRY TYPE STRING,
MNBPIDST TYPE STRING,
MNDATEDEL TYPE STRING,
MNDATEADO TYPE STRING,
MNSIGNBPMN TYPE STRING,
MNVHSIGN TYPE STRING,
MNDRIVER TYPE STRING,
MNBAL TYPE STRING,
MNORDNO TYPE STRING,
WABPID_INH TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
POST_CODE1 TYPE STRING,
POST_CODE2 TYPE STRING,
POST_CODE3 TYPE STRING,
PO_BOX TYPE STRING,
PO_BOX_LOC TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM1 TYPE STRING,
STR_SUPPL1 TYPE STRING,
STR_SUPPL2 TYPE STRING,
STR_SUPPL3 TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
HOUSE_NUM2 TYPE STRING,
LOCATION TYPE STRING,
TEL_NUMBER TYPE STRING,
TEL_EXTENS TYPE STRING,
FAX_NUMBER TYPE STRING,
FAX_EXTENS TYPE STRING,
PARTNER TYPE STRING,
WADESCRPOFG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAV_MNVHSIGN_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_EHSWAV_MNVHSIGN_STR-MANDT sy-vline 
WA_EHSWAV_MNVHSIGN_STR-RECN sy-vline 
WA_EHSWAV_MNVHSIGN_STR-DELFLG sy-vline 
WA_EHSWAV_MNVHSIGN_STR-PARKFLG sy-vline 
WA_EHSWAV_MNVHSIGN_STR-CRDAT sy-vline 
WA_EHSWAV_MNVHSIGN_STR-CRNAM sy-vline 
WA_EHSWAV_MNVHSIGN_STR-UPDDAT sy-vline 
WA_EHSWAV_MNVHSIGN_STR-UPDNAM sy-vline 
WA_EHSWAV_MNVHSIGN_STR-SRSID sy-vline 
WA_EHSWAV_MNVHSIGN_STR-OWNID sy-vline 
WA_EHSWAV_MNVHSIGN_STR-RECNROOT sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNBPROLE sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNRECNBP sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNBPORD sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNBPIDCTRY sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNBPIDST sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNDATEDEL sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNDATEADO sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNSIGNBPMN sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNVHSIGN sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNDRIVER sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNBAL sy-vline 
WA_EHSWAV_MNVHSIGN_STR-MNORDNO sy-vline 
WA_EHSWAV_MNVHSIGN_STR-WABPID_INH sy-vline 
WA_EHSWAV_MNVHSIGN_STR-NAME1 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-NAME2 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-NAME3 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-NAME4 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-CITY1 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-CITY2 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-POST_CODE1 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-POST_CODE2 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-POST_CODE3 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-PO_BOX sy-vline 
WA_EHSWAV_MNVHSIGN_STR-PO_BOX_LOC sy-vline 
WA_EHSWAV_MNVHSIGN_STR-STREET sy-vline 
WA_EHSWAV_MNVHSIGN_STR-HOUSE_NUM1 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-STR_SUPPL1 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-STR_SUPPL2 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-STR_SUPPL3 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-COUNTRY sy-vline 
WA_EHSWAV_MNVHSIGN_STR-REGION sy-vline 
WA_EHSWAV_MNVHSIGN_STR-HOUSE_NUM2 sy-vline 
WA_EHSWAV_MNVHSIGN_STR-LOCATION sy-vline 
WA_EHSWAV_MNVHSIGN_STR-TEL_NUMBER sy-vline 
WA_EHSWAV_MNVHSIGN_STR-TEL_EXTENS sy-vline 
WA_EHSWAV_MNVHSIGN_STR-FAX_NUMBER sy-vline 
WA_EHSWAV_MNVHSIGN_STR-FAX_EXTENS sy-vline 
WA_EHSWAV_MNVHSIGN_STR-PARTNER sy-vline 
WA_EHSWAV_MNVHSIGN_STR-WADESCRPOFG sy-vline      INTO ld_text SEPARATED BY SPACE.

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