ABAP Select data from SAP table GVD_WPTOTALINFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GVD_WPTOTALINFO
*  INTO TABLE @DATA(IT_GVD_WPTOTALINFO2).
*--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_GVD_WPTOTALINFO INDEX 1 INTO DATA(WA_GVD_WPTOTALINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GVD_WPTOTALINFO>-SNAPSHOT_ID = 1.
<GVD_WPTOTALINFO>-WP_SERVER = 1.
<GVD_WPTOTALINFO>-WP_NO = 1.
<GVD_WPTOTALINFO>-WP_ITYPE = 1.
<GVD_WPTOTALINFO>-WP_TYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GVD_WPTOTALINFO-WP_PID, sy-vline,
  WA_GVD_WPTOTALINFO-WP_ISTATUS, sy-vline,
  WA_GVD_WPTOTALINFO-WP_STATUS, sy-vline,
  WA_GVD_WPTOTALINFO-WP_IWAIT, sy-vline,
  WA_GVD_WPTOTALINFO-WP_WAITING, sy-vline,
  WA_GVD_WPTOTALINFO-WP_SEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GVD_WPTOTALINFO 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_GVD_WPTOTALINFO 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_GVD_WPTOTALINFO INTO WA_GVD_WPTOTALINFO.


*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_GVD_WPTOTALINFO_STR, 
SNAPSHOT_ID TYPE STRING,
WP_SERVER TYPE STRING,
WP_NO TYPE STRING,
WP_ITYPE TYPE STRING,
WP_TYP TYPE STRING,
WP_PID TYPE STRING,
WP_ISTATUS TYPE STRING,
WP_STATUS TYPE STRING,
WP_IWAIT TYPE STRING,
WP_WAITING TYPE STRING,
WP_SEM TYPE STRING,
WP_IRESTRT TYPE STRING,
WP_RESTART TYPE STRING,
WP_DUMPS TYPE STRING,
WP_CPU TYPE STRING,
WP_ELTIME TYPE STRING,
WP_MANDT TYPE STRING,
WP_BNAME TYPE STRING,
WP_REPORT TYPE STRING,
WP_IACTION TYPE STRING,
WP_ACTION TYPE STRING,
WP_TABLE TYPE STRING,
WP_WAITINF TYPE STRING,
WP_WAITTIM TYPE STRING,
WP_SEMSTAT TYPE STRING,
WP_INDEX TYPE STRING,
STARTDATE TYPE STRING,
STARTTIME TYPE STRING,
DYNPRONR TYPE STRING,
TCODE TYPE STRING,
CUAPROGRAM TYPE STRING,
FCODE TYPE STRING,
BTCJOBNAME TYPE STRING,
BTCJOBCNT TYPE STRING,
MEMSUM TYPE STRING,
PRIVSUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GVD_WPTOTALINFO_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_GVD_WPTOTALINFO_STR-SNAPSHOT_ID sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_SERVER sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_NO sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_ITYPE sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_TYP sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_PID sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_ISTATUS sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_STATUS sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_IWAIT sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_WAITING sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_SEM sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_IRESTRT sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_RESTART sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_DUMPS sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_CPU sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_ELTIME sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_MANDT sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_BNAME sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_REPORT sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_IACTION sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_ACTION sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_TABLE sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_WAITINF sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_WAITTIM sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_SEMSTAT sy-vline 
WA_GVD_WPTOTALINFO_STR-WP_INDEX sy-vline 
WA_GVD_WPTOTALINFO_STR-STARTDATE sy-vline 
WA_GVD_WPTOTALINFO_STR-STARTTIME sy-vline 
WA_GVD_WPTOTALINFO_STR-DYNPRONR sy-vline 
WA_GVD_WPTOTALINFO_STR-TCODE sy-vline 
WA_GVD_WPTOTALINFO_STR-CUAPROGRAM sy-vline 
WA_GVD_WPTOTALINFO_STR-FCODE sy-vline 
WA_GVD_WPTOTALINFO_STR-BTCJOBNAME sy-vline 
WA_GVD_WPTOTALINFO_STR-BTCJOBCNT sy-vline 
WA_GVD_WPTOTALINFO_STR-MEMSUM sy-vline 
WA_GVD_WPTOTALINFO_STR-PRIVSUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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