ABAP Select data from SAP table EHSWAS_APPWAKEYIOT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHSWAS_APPWAKEYIOT 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_APPWAKEYIOT. 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_APPWAKEYIOT 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_APPWAKEYIOT TYPE STANDARD TABLE OF EHSWAS_APPWAKEYIOT,
      WA_EHSWAS_APPWAKEYIOT TYPE EHSWAS_APPWAKEYIOT,
      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_APPWAKEYIOT> TYPE EHSWAS_APPWAKEYIOT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAS_APPWAKEYIOT
*  INTO TABLE @DATA(IT_EHSWAS_APPWAKEYIOT2).
*--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_APPWAKEYIOT INDEX 1 INTO DATA(WA_EHSWAS_APPWAKEYIOT2).


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

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

ENDLOOP.

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

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


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

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

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

*Conversion exit CUNIT, internal->external for field APCKU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_APPWAKEYIOT-APCKU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APPWAKEYIOT-APCKU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field APDISU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_APPWAKEYIOT-APDISU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APPWAKEYIOT-APDISU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field APPQUANU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_APPWAKEYIOT-APPQUANU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APPWAKEYIOT-APPQUANU.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit SPEC1, internal->external for field SUBST
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_APPWAKEYIOT-SUBST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APPWAKEYIOT-SUBST.
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_APPWAKEYIOT_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,
APWAKEY TYPE STRING,
APCKQUAN TYPE STRING,
APCKU TYPE STRING,
APDISQUAN TYPE STRING,
APDISU TYPE STRING,
APPQUAN TYPE STRING,
APPQUANU TYPE STRING,
APDISCAT TYPE STRING,
APDISMETH TYPE STRING,
APDISPROC TYPE STRING,
APFRE TYPE STRING,
RECNSUBST TYPE STRING,
APPACCAT TYPE STRING,
APPDISPREAS TYPE STRING,
APWAKEYORD 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,
SUBST TYPE STRING,
APDISCATDES TYPE STRING,
APDISMETHDES TYPE STRING,
APDISPROCDES TYPE STRING,
APFREDES TYPE STRING,
APPACCATDES TYPE STRING,
APPDISPREASDES TYPE STRING,
SEARCHFIELD TYPE STRING,
RECNSURV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAS_APPWAKEYIOT_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_APPWAKEYIOT_STR-MARKFLG sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-SELEFLG sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-LINENO sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-LINEMOD sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-CHCOFLG sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-LOCKMOD sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-INTRFLG sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-MANDT sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-RECN sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-ACTN sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-VALFR sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-VALTO sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-AENNR sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-DELFLG sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-PARKFLG sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-CRDAT sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-CRNAM sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-UPDDAT sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-UPDNAM sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-SRSID sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-OWNID sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-RECNROOT sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-RECNWAKEY sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APWAKEY sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APCKQUAN sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APCKU sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISQUAN sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISU sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APPQUAN sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APPQUANU sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISCAT sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISMETH sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISPROC sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APFRE sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-RECNSUBST sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APPACCAT sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APPDISPREAS sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APWAKEYORD sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-PARTNER sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-RLTYP sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-KZ sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-WAKEY sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-WAKEYDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-WAKEYCATLG sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-WAKEYSURV sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-WAKEYSURVDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-SUBST sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISCATDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISMETHDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APDISPROCDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APFREDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APPACCATDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-APPDISPREASDES sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-SEARCHFIELD sy-vline 
WA_EHSWAS_APPWAKEYIOT_STR-RECNSURV sy-vline      INTO ld_text SEPARATED BY SPACE.

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