ABAP Select data from SAP table SWW_V_SWWWIHEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SWW_V_SWWWIHEAD
*  INTO TABLE @DATA(IT_SWW_V_SWWWIHEAD2).
*--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_SWW_V_SWWWIHEAD INDEX 1 INTO DATA(WA_SWW_V_SWWWIHEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SWW_V_SWWWIHEAD>-MANDT = 1.
<SWW_V_SWWWIHEAD>-WI_ID = 1.
<SWW_V_SWWWIHEAD>-TOP_TASK = 1.
<SWW_V_SWWWIHEAD>-TOP_WI_ID = 1.
<SWW_V_SWWWIHEAD>-CREATEDDATEZONLO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SWW_V_SWWWIHEAD-CREATEDTIMEZONLO, sy-vline,
  WA_SWW_V_SWWWIHEAD-CREA_TMP, sy-vline,
  WA_SWW_V_SWWWIHEAD-COMPLETEDDATEZONLO, sy-vline,
  WA_SWW_V_SWWWIHEAD-COMPLETEDTIMEZONLO, sy-vline,
  WA_SWW_V_SWWWIHEAD-WI_AED_TIMESTAMP, sy-vline,
  WA_SWW_V_SWWWIHEAD-WI_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SWW_V_SWWWIHEAD 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_SWW_V_SWWWIHEAD 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_SWW_V_SWWWIHEAD INTO WA_SWW_V_SWWWIHEAD.


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

*Conversion exit ISOLA, internal->external for field WI_LANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SWW_V_SWWWIHEAD-WI_LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SWW_V_SWWWIHEAD-WI_LANG.
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_SWW_V_SWWWIHEAD_STR, 
MANDT TYPE STRING,
WI_ID TYPE STRING,
TOP_TASK TYPE STRING,
TOP_WI_ID TYPE STRING,
CREATEDDATEZONLO TYPE STRING,
CREATEDTIMEZONLO TYPE STRING,
CREA_TMP TYPE STRING,
COMPLETEDDATEZONLO TYPE STRING,
COMPLETEDTIMEZONLO TYPE STRING,
WI_AED_TIMESTAMP TYPE STRING,
WI_TYPE TYPE STRING,
WI_TEXT TYPE STRING,
WI_STAT TYPE STRING,
WI_CRUSER TYPE STRING,
WI_CHCKWI TYPE STRING,
WI_RH_TASK TYPE STRING,
WI_PRIO TYPE STRING,
WI_COMP_EV TYPE STRING,
WI_FORW_BY TYPE STRING,
RETRY_CNT TYPE STRING,
MAX_RETRY TYPE STRING,
WI_RELEASE TYPE STRING,
WF_TYPE TYPE STRING,
DEF_GUID TYPE STRING,
PRS_PROFIL TYPE STRING,
AGING_STATE TYPE STRING,
AGING_TEMPERATURE TYPE STRING,
REFERENCE_NODEID TYPE STRING,
WI_CREATOR TYPE STRING,
WI_RHTEXT TYPE STRING,
WI_CBFB TYPE STRING,
TCLASS TYPE STRING,
NOTE_EXIST TYPE STRING,
NOTIFY TYPE STRING,
STEP_ID TYPE STRING,
AGENT_RULE_ID TYPE STRING,
WI_LANG TYPE STRING,
WI_AAGENT TYPE STRING,
WI_AADDR TYPE STRING,
WI_CRADDR TYPE STRING,
WI_CONFIRM TYPE STRING,
WI_DISABLE TYPE STRING,
WI_REJECT TYPE STRING,
CB_DONE TYPE STRING,
NO_DEADL TYPE STRING,
WI_DH_STAT TYPE STRING,
EXEC_TIME TYPE STRING,
NOTE_COUNT TYPE STRING,
CHECK_STAT TYPE STRING,
BLOCKTYPE TYPE STRING,
PARENT_WI TYPE STRING,
RNDNUMBER TYPE STRING,
WFD_ID TYPE STRING,
WFD_VERSION TYPE STRING,
WFD_EXETYP TYPE STRING,
PROCCAT TYPE STRING,
WI_TEXT_ID TYPE STRING,
CODE TYPE STRING,
ERRORTYPE TYPE STRING,
NAME TYPE STRING,
WORKAREA TYPE STRING,
MESSAGE TYPE STRING,
VARIABLE1 TYPE STRING,
VARIABLE2 TYPE STRING,
VARIABLE3 TYPE STRING,
VARIABLE4 TYPE STRING,
CATID TYPE STRING,
EXCP_TYPE TYPE STRING,
EXC_CLSNAM TYPE STRING,
STARTEDDATEZONLO TYPE STRING,
STARTEDTIMEZONLO TYPE STRING,
WI_ASTS TYPE STRING,
GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SWW_V_SWWWIHEAD_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_SWW_V_SWWWIHEAD_STR-MANDT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_ID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-TOP_TASK sy-vline 
WA_SWW_V_SWWWIHEAD_STR-TOP_WI_ID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-CREATEDDATEZONLO sy-vline 
WA_SWW_V_SWWWIHEAD_STR-CREATEDTIMEZONLO sy-vline 
WA_SWW_V_SWWWIHEAD_STR-CREA_TMP sy-vline 
WA_SWW_V_SWWWIHEAD_STR-COMPLETEDDATEZONLO sy-vline 
WA_SWW_V_SWWWIHEAD_STR-COMPLETEDTIMEZONLO sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_AED_TIMESTAMP sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_TYPE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_TEXT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_STAT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_CRUSER sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_CHCKWI sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_RH_TASK sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_PRIO sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_COMP_EV sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_FORW_BY sy-vline 
WA_SWW_V_SWWWIHEAD_STR-RETRY_CNT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-MAX_RETRY sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_RELEASE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WF_TYPE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-DEF_GUID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-PRS_PROFIL sy-vline 
WA_SWW_V_SWWWIHEAD_STR-AGING_STATE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-AGING_TEMPERATURE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-REFERENCE_NODEID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_CREATOR sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_RHTEXT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_CBFB sy-vline 
WA_SWW_V_SWWWIHEAD_STR-TCLASS sy-vline 
WA_SWW_V_SWWWIHEAD_STR-NOTE_EXIST sy-vline 
WA_SWW_V_SWWWIHEAD_STR-NOTIFY sy-vline 
WA_SWW_V_SWWWIHEAD_STR-STEP_ID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-AGENT_RULE_ID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_LANG sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_AAGENT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_AADDR sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_CRADDR sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_CONFIRM sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_DISABLE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_REJECT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-CB_DONE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-NO_DEADL sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_DH_STAT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-EXEC_TIME sy-vline 
WA_SWW_V_SWWWIHEAD_STR-NOTE_COUNT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-CHECK_STAT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-BLOCKTYPE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-PARENT_WI sy-vline 
WA_SWW_V_SWWWIHEAD_STR-RNDNUMBER sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WFD_ID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WFD_VERSION sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WFD_EXETYP sy-vline 
WA_SWW_V_SWWWIHEAD_STR-PROCCAT sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_TEXT_ID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-CODE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-ERRORTYPE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-NAME sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WORKAREA sy-vline 
WA_SWW_V_SWWWIHEAD_STR-MESSAGE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-VARIABLE1 sy-vline 
WA_SWW_V_SWWWIHEAD_STR-VARIABLE2 sy-vline 
WA_SWW_V_SWWWIHEAD_STR-VARIABLE3 sy-vline 
WA_SWW_V_SWWWIHEAD_STR-VARIABLE4 sy-vline 
WA_SWW_V_SWWWIHEAD_STR-CATID sy-vline 
WA_SWW_V_SWWWIHEAD_STR-EXCP_TYPE sy-vline 
WA_SWW_V_SWWWIHEAD_STR-EXC_CLSNAM sy-vline 
WA_SWW_V_SWWWIHEAD_STR-STARTEDDATEZONLO sy-vline 
WA_SWW_V_SWWWIHEAD_STR-STARTEDTIMEZONLO sy-vline 
WA_SWW_V_SWWWIHEAD_STR-WI_ASTS sy-vline 
WA_SWW_V_SWWWIHEAD_STR-GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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