ABAP Select data from SAP table SWW_V_SWWLOGHSIT 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_SWWLOGHSIT 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_SWWLOGHSIT. 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_SWWLOGHSIT 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_SWWLOGHSIT TYPE STANDARD TABLE OF SWW_V_SWWLOGHSIT,
      WA_SWW_V_SWWLOGHSIT TYPE SWW_V_SWWLOGHSIT,
      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_SWWLOGHSIT> TYPE SWW_V_SWWLOGHSIT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SWW_V_SWWLOGHSIT
*  INTO TABLE @DATA(IT_SWW_V_SWWLOGHSIT2).
*--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_SWWLOGHSIT INDEX 1 INTO DATA(WA_SWW_V_SWWLOGHSIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SWW_V_SWWLOGHSIT>-MANDT = 1.
<SWW_V_SWWLOGHSIT>-WI_ID = 1.
<SWW_V_SWWLOGHSIT>-LOGCREATEDDATEZONLO = 1.
<SWW_V_SWWLOGHSIT>-LOGCREATEDTIMEZONLO = 1.
<SWW_V_SWWLOGHSIT>-TIMESTAMP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SWW_V_SWWLOGHSIT-METHOD, sy-vline,
  WA_SWW_V_SWWLOGHSIT-METH_USER, sy-vline,
  WA_SWW_V_SWWLOGHSIT-CODE, sy-vline,
  WA_SWW_V_SWWLOGHSIT-ERRORTYPE, sy-vline,
  WA_SWW_V_SWWLOGHSIT-WORKAREA, sy-vline,
  WA_SWW_V_SWWLOGHSIT-MESSAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SWW_V_SWWLOGHSIT 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_SWWLOGHSIT 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_SWWLOGHSIT INTO WA_SWW_V_SWWLOGHSIT.


*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.
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_SWWLOGHSIT_STR, 
MANDT TYPE STRING,
WI_ID TYPE STRING,
LOGCREATEDDATEZONLO TYPE STRING,
LOGCREATEDTIMEZONLO TYPE STRING,
TIMESTAMP TYPE STRING,
METHOD TYPE STRING,
METH_USER TYPE STRING,
CODE TYPE STRING,
ERRORTYPE TYPE STRING,
WORKAREA TYPE STRING,
MESSAGE TYPE STRING,
VARIABLE1 TYPE STRING,
VARIABLE2 TYPE STRING,
VARIABLE3 TYPE STRING,
VARIABLE4 TYPE STRING,
MSGTYPE TYPE STRING,
PARA_NAM_1 TYPE STRING,
PARA_VAL_1 TYPE STRING,
PARA_NAM_2 TYPE STRING,
PARA_VAL_2 TYPE STRING,
TECH_USER 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_RH_TASK TYPE STRING,
WI_PRIO TYPE STRING,
WI_RELEASE TYPE STRING,
WF_TYPE TYPE STRING,
TOP_TASK TYPE STRING,
TOP_WI_ID TYPE STRING,
PRS_PROFIL TYPE STRING,
REFERENCE_NODEID TYPE STRING,
WI_CHCKWI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SWW_V_SWWLOGHSIT_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_SWWLOGHSIT_STR-MANDT sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_ID sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-LOGCREATEDDATEZONLO sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-LOGCREATEDTIMEZONLO sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-TIMESTAMP sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-METHOD sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-METH_USER sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-CODE sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-ERRORTYPE sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WORKAREA sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-MESSAGE sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-VARIABLE1 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-VARIABLE2 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-VARIABLE3 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-VARIABLE4 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-MSGTYPE sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-PARA_NAM_1 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-PARA_VAL_1 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-PARA_NAM_2 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-PARA_VAL_2 sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-TECH_USER sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-CREATEDDATEZONLO sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-CREATEDTIMEZONLO sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-CREA_TMP sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-COMPLETEDDATEZONLO sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-COMPLETEDTIMEZONLO sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_AED_TIMESTAMP sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_TYPE sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_TEXT sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_STAT sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_CRUSER sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_RH_TASK sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_PRIO sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_RELEASE sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WF_TYPE sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-TOP_TASK sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-TOP_WI_ID sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-PRS_PROFIL sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-REFERENCE_NODEID sy-vline 
WA_SWW_V_SWWLOGHSIT_STR-WI_CHCKWI sy-vline      INTO ld_text SEPARATED BY SPACE.

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