ABAP Select data from SAP table EHSWAS_BPWAWAKEYIOT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAS_BPWAWAKEYIOT
*  INTO TABLE @DATA(IT_EHSWAS_BPWAWAKEYIOT2).
*--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_EHSWAS_BPWAWAKEYIOT INDEX 1 INTO DATA(WA_EHSWAS_BPWAWAKEYIOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAS_BPWAWAKEYIOT>-MARKFLG = 1.
<EHSWAS_BPWAWAKEYIOT>-SELEFLG = 1.
<EHSWAS_BPWAWAKEYIOT>-LINENO = 1.
<EHSWAS_BPWAWAKEYIOT>-LINEMOD = 1.
<EHSWAS_BPWAWAKEYIOT>-CHCOFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAS_BPWAWAKEYIOT-LOCKMOD, sy-vline,
  WA_EHSWAS_BPWAWAKEYIOT-INTRFLG, sy-vline,
  WA_EHSWAS_BPWAWAKEYIOT-MANDT, sy-vline,
  WA_EHSWAS_BPWAWAKEYIOT-RECN, sy-vline,
  WA_EHSWAS_BPWAWAKEYIOT-ACTN, sy-vline,
  WA_EHSWAS_BPWAWAKEYIOT-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAS_BPWAWAKEYIOT 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_EHSWAS_BPWAWAKEYIOT 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_EHSWAS_BPWAWAKEYIOT INTO WA_EHSWAS_BPWAWAKEYIOT.


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

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

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

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_BPWAWAKEYIOT-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_BPWAWAKEYIOT-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_EHSWAS_BPWAWAKEYIOT_STR, 
MARKFLG TYPE STRING,
SELEFLG TYPE STRING,
LINENO TYPE STRING,
LINEMOD TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
INTRFLG TYPE STRING,
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,
RECNWAKEY TYPE STRING,
BPWASURV TYPE STRING,
PARTNER TYPE STRING,
RLTYP TYPE STRING,
KZ TYPE STRING,
WAKEY TYPE STRING,
WAKEYDES TYPE STRING,
WAKEYCATLG TYPE STRING,
WAKEYSURV TYPE STRING,
WAKEYSURVDES TYPE STRING,
BPWASURVDES TYPE STRING,
SEARCHFIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAS_BPWAWAKEYIOT_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_EHSWAS_BPWAWAKEYIOT_STR-MARKFLG sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-SELEFLG sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-LINENO sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-LINEMOD sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-CHCOFLG sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-LOCKMOD sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-INTRFLG sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-MANDT sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-RECN sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-ACTN sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-VALFR sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-VALTO sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-AENNR sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-DELFLG sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-PARKFLG sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-CRDAT sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-CRNAM sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-UPDDAT sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-UPDNAM sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-SRSID sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-OWNID sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-RECNROOT sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-RECNWAKEY sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-BPWASURV sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-PARTNER sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-RLTYP sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-KZ sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-WAKEY sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-WAKEYDES sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-WAKEYCATLG sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-WAKEYSURV sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-WAKEYSURVDES sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-BPWASURVDES sy-vline 
WA_EHSWAS_BPWAWAKEYIOT_STR-SEARCHFIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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