ABAP Select data from SAP table EHSWAT003 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHSWAT003 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 EHSWAT003. 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 EHSWAT003 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_EHSWAT003 TYPE STANDARD TABLE OF EHSWAT003,
      WA_EHSWAT003 TYPE EHSWAT003,
      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: <EHSWAT003> TYPE EHSWAT003.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EHSWAT003.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EHSWAT003
  INTO TABLE IT_EHSWAT003.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAT003
*  INTO TABLE @DATA(IT_EHSWAT0032).
*--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_EHSWAT003 INDEX 1 INTO DATA(WA_EHSWAT0032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EHSWAT003 ASSIGNING <EHSWAT003>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAT003>-MANDT = 1.
<EHSWAT003>-RECN = 1.
<EHSWAT003>-ACTN = 1.
<EHSWAT003>-VALFR = 1.
<EHSWAT003>-VALTO = 1.

ENDLOOP.

LOOP AT IT_EHSWAT003 INTO WA_EHSWAT003.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAT003-AENNR, sy-vline,
  WA_EHSWAT003-DELFLG, sy-vline,
  WA_EHSWAT003-PARKFLG, sy-vline,
  WA_EHSWAT003-CRDAT, sy-vline,
  WA_EHSWAT003-CRNAM, sy-vline,
  WA_EHSWAT003-UPDDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAT003 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_EHSWAT003 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_EHSWAT003 INTO WA_EHSWAT003.


*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 AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAT003-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT003-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OWNID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAT003-OWNID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT003-OWNID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DISCHNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAT003-DISCHNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT003-DISCHNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAT003-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT003-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAT003-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT003-VBELN.
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_EHSWAT003_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR 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,
RECNROOTDR TYPE STRING,
RECNMASTGN TYPE STRING,
RECNMASTDL TYPE STRING,
DISCHNO TYPE STRING,
ORD TYPE STRING,
EBELN TYPE STRING,
EBLEP TYPE STRING,
VBELN TYPE STRING,
VBAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAT003_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_EHSWAT003_STR-MANDT sy-vline 
WA_EHSWAT003_STR-RECN sy-vline 
WA_EHSWAT003_STR-ACTN sy-vline 
WA_EHSWAT003_STR-VALFR sy-vline 
WA_EHSWAT003_STR-VALTO sy-vline 
WA_EHSWAT003_STR-AENNR sy-vline 
WA_EHSWAT003_STR-DELFLG sy-vline 
WA_EHSWAT003_STR-PARKFLG sy-vline 
WA_EHSWAT003_STR-CRDAT sy-vline 
WA_EHSWAT003_STR-CRNAM sy-vline 
WA_EHSWAT003_STR-UPDDAT sy-vline 
WA_EHSWAT003_STR-UPDNAM sy-vline 
WA_EHSWAT003_STR-SRSID sy-vline 
WA_EHSWAT003_STR-OWNID sy-vline 
WA_EHSWAT003_STR-RECNROOT sy-vline 
WA_EHSWAT003_STR-RECNROOTDR sy-vline 
WA_EHSWAT003_STR-RECNMASTGN sy-vline 
WA_EHSWAT003_STR-RECNMASTDL sy-vline 
WA_EHSWAT003_STR-DISCHNO sy-vline 
WA_EHSWAT003_STR-ORD sy-vline 
WA_EHSWAT003_STR-EBELN sy-vline 
WA_EHSWAT003_STR-EBLEP sy-vline 
WA_EHSWAT003_STR-VBELN sy-vline 
WA_EHSWAT003_STR-VBAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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