ABAP Select data from SAP table EHSWAT_ENFOD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAT_ENFOD
*  INTO TABLE @DATA(IT_EHSWAT_ENFOD2).
*--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_EHSWAT_ENFOD INDEX 1 INTO DATA(WA_EHSWAT_ENFOD2).


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

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

ENDLOOP.

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

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


*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_EHSWAT_ENFOD-OWNID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT_ENFOD-OWNID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field EAPREYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAT_ENFOD-EAPREYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT_ENFOD-EAPREYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field EASUCCYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAT_ENFOD-EASUCCYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAT_ENFOD-EASUCCYEAR.
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_EHSWAT_ENFOD_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,
EAPRED TYPE STRING,
EAPPRED TYPE STRING,
EAPREYEAR TYPE STRING,
EAPRECAT TYPE STRING,
EASUCC TYPE STRING,
EAPSUCC TYPE STRING,
EASUCCYEAR TYPE STRING,
EASUCCCAT TYPE STRING,
EATIME TYPE STRING,
EAVENDOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAT_ENFOD_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_EHSWAT_ENFOD_STR-MANDT sy-vline 
WA_EHSWAT_ENFOD_STR-RECN sy-vline 
WA_EHSWAT_ENFOD_STR-DELFLG sy-vline 
WA_EHSWAT_ENFOD_STR-PARKFLG sy-vline 
WA_EHSWAT_ENFOD_STR-CRDAT sy-vline 
WA_EHSWAT_ENFOD_STR-CRNAM sy-vline 
WA_EHSWAT_ENFOD_STR-UPDDAT sy-vline 
WA_EHSWAT_ENFOD_STR-UPDNAM sy-vline 
WA_EHSWAT_ENFOD_STR-SRSID sy-vline 
WA_EHSWAT_ENFOD_STR-OWNID sy-vline 
WA_EHSWAT_ENFOD_STR-RECNROOT sy-vline 
WA_EHSWAT_ENFOD_STR-EAPRED sy-vline 
WA_EHSWAT_ENFOD_STR-EAPPRED sy-vline 
WA_EHSWAT_ENFOD_STR-EAPREYEAR sy-vline 
WA_EHSWAT_ENFOD_STR-EAPRECAT sy-vline 
WA_EHSWAT_ENFOD_STR-EASUCC sy-vline 
WA_EHSWAT_ENFOD_STR-EAPSUCC sy-vline 
WA_EHSWAT_ENFOD_STR-EASUCCYEAR sy-vline 
WA_EHSWAT_ENFOD_STR-EASUCCCAT sy-vline 
WA_EHSWAT_ENFOD_STR-EATIME sy-vline 
WA_EHSWAT_ENFOD_STR-EAVENDOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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