ABAP Select data from SAP table EHSWAV_001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHSWAV_001 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_001. 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_001 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_001 TYPE STANDARD TABLE OF EHSWAV_001,
      WA_EHSWAV_001 TYPE EHSWAV_001,
      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_001> TYPE EHSWAV_001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EHSWAV_001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EHSWAV_001
  INTO TABLE IT_EHSWAV_001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAV_001
*  INTO TABLE @DATA(IT_EHSWAV_0012).
*--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_001 INDEX 1 INTO DATA(WA_EHSWAV_0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EHSWAV_001 ASSIGNING <EHSWAV_001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAV_001>-MANDT = 1.
<EHSWAV_001>-RECN = 1.
<EHSWAV_001>-ACTN = 1.
<EHSWAV_001>-VALFR = 1.
<EHSWAV_001>-VALTO = 1.

ENDLOOP.

LOOP AT IT_EHSWAV_001 INTO WA_EHSWAV_001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAV_001-AENNR, sy-vline,
  WA_EHSWAV_001-DELFLG, sy-vline,
  WA_EHSWAV_001-PARKFLG, sy-vline,
  WA_EHSWAV_001-CRDAT, sy-vline,
  WA_EHSWAV_001-CRNAM, sy-vline,
  WA_EHSWAV_001-UPDDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAV_001 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_001 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_001 INTO WA_EHSWAV_001.


*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_EHSWAV_001-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAV_001-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OWNID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAV_001-OWNID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAV_001-OWNID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WABPCAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAV_001-WABPCAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAV_001-WABPCAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDRNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAV_001-ADDRNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAV_001-ADDRNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAV_001-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAV_001-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_001_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,
WABPCAT TYPE STRING,
WAAUDIT TYPE STRING,
WAAUDPERS TYPE STRING,
WANAUDIT TYPE STRING,
ADDRNO TYPE STRING,
ADRBUKRS TYPE STRING,
ADRWERK TYPE STRING,
WACON TYPE STRING,
PARTNER TYPE STRING,
RLTYP TYPE STRING,
WAE_PRE TYPE STRING,
WAE_SUCC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAV_001_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_001_STR-MANDT sy-vline 
WA_EHSWAV_001_STR-RECN sy-vline 
WA_EHSWAV_001_STR-ACTN sy-vline 
WA_EHSWAV_001_STR-VALFR sy-vline 
WA_EHSWAV_001_STR-VALTO sy-vline 
WA_EHSWAV_001_STR-AENNR sy-vline 
WA_EHSWAV_001_STR-DELFLG sy-vline 
WA_EHSWAV_001_STR-PARKFLG sy-vline 
WA_EHSWAV_001_STR-CRDAT sy-vline 
WA_EHSWAV_001_STR-CRNAM sy-vline 
WA_EHSWAV_001_STR-UPDDAT sy-vline 
WA_EHSWAV_001_STR-UPDNAM sy-vline 
WA_EHSWAV_001_STR-SRSID sy-vline 
WA_EHSWAV_001_STR-OWNID sy-vline 
WA_EHSWAV_001_STR-RECNROOT sy-vline 
WA_EHSWAV_001_STR-WABPCAT sy-vline 
WA_EHSWAV_001_STR-WAAUDIT sy-vline 
WA_EHSWAV_001_STR-WAAUDPERS sy-vline 
WA_EHSWAV_001_STR-WANAUDIT sy-vline 
WA_EHSWAV_001_STR-ADDRNO sy-vline 
WA_EHSWAV_001_STR-ADRBUKRS sy-vline 
WA_EHSWAV_001_STR-ADRWERK sy-vline 
WA_EHSWAV_001_STR-WACON sy-vline 
WA_EHSWAV_001_STR-PARTNER sy-vline 
WA_EHSWAV_001_STR-RLTYP sy-vline 
WA_EHSWAV_001_STR-WAE_PRE sy-vline 
WA_EHSWAV_001_STR-WAE_SUCC sy-vline      INTO ld_text SEPARATED BY SPACE.

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